TAGORE FOREST LANDSCAPE SCENARIOS
Landscape Architectural Approaches for a Housing Development in a Tropical City
NUS School of Design and Environment | Department of Architecture
LA4701 MLA Studio: Quarter, 8 Aug - 14 Nov 2016
Amanda Jennifer Chandra | Bai Zhuhui | Dai Junwei | Sun Hao Jen Ashley | Wu Yitong | Yan Ran
Tutor: Hwang Yun Hye
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As a studio product which is not censored, It may contain mistakes or deficiencies, and proposed ideas may not represent the position of NUS.
Published by
CASA Centre of Advanced Studies in Architecture
Department of Architecture
School of Design and Environment
National University of Singapore
4 Architecture Drive
Singapore 117566
Tel: +65 65163452
Fax: +65 67793078
Copyright © 2017 Hwang Yun Hye (ed.)
ISBN: 978-981-11-1954-5
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TAGORE FOREST LANDSCAPE SCENARIOS
Landscape Architectural Approaches for a Housing Development in a Tropical City
NUS School of Design and Environment | Department of Architecture
LA4701 MLA Studio: Quarter, 8 Aug - 14 Nov 2016
Amanda Jennifer Chandra | Bai Zhuhui | Dai Junwei | Sun Hao Jen Ashley | Wu Yitong | Yan Ran
Tutor: Hwang Yun Hye
MLA 2016.indd 5 9/12/2016 5:20:17 PM
MLA 2016.indd 6 9/12/2016 5:20:17 PM
Published by CASA Centre of Advanced Studies in Architecture
Department of Architecture
School of Design and Environment National University of Singapore 4 Architecture Drive Singapore 117566
Tel: +65 65163452
Fax: +65 67793078
Copyright © 2017 Hwang Yun Hye (ed.)
ISBN:978-981-11-1954-5
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STUDIO INTRODUCTION CHRONOLOGY PRELIMINARY RESEARCH PROPOSALS REFLECTIONS P12 - 15 P17 - 25 P33 - 87 P89 - 173 P175 - 177 MLA 2016.indd 11 9/12/2016 5:20:22 PM
STUDIO INTRODUCTION
Tagore Forest Landscape Scenarios_ landscape architectural approaches for a housing development in a tropical city
Hwang Yun Hye, Assistant Professor, Masters Program of Landscape Architecture, Department of Architecture, School of Design and Environment, National University of Singapore
Background
Singapore’s land was originally covered by primary rainforests, mangroves and freshwater forests, harboring thousands of floral and faunal species in a complex tropical lowland forest ecosystem typical of the region (Wee & Corlett 1986; Ng et al., 2011). However, the clearing of land for settlements, starting from the colonial period of the late 1800s and culminating in the post-war urbanization of the 1960s, have resulted in widespread deforestation, leaving less than 5% of the original habitats intact (Tan, 2010; Ng et al., 2011). Over the years, these local habitats have further decreased and deteriorated as they become increasingly fragmented due to urban growth (Brook, Sodhi, & Ng, 2003; Corlett, 1992; Laurance, 1999). Land development in Singapore continues unabated and is projected to further accelerate, based on population policy announcements (NPTD, 2013) as well as newly released URA plan (The Planning Act Master Plan Written Statement 2014).
Under the ‘Garden City’ initiative and its successor, ‘City in a Garden’ (“City in a Garden,” 2015), nearly half of the land area of Singapore has been covered by manmade vegetation, consisting of both highly managed greenery and spontaneously vegetated areas (A.T.K. Yee & Richard T, 2011). Managed greenery includes urban parks and neighborhood open spaces, as well as streetscapes lined by trimmed trees and manicured lawns. These types of greenery are regarded as the representative landscape in Singapore, featuring a parkland aesthetic likened to the ‘English Garden’ which is now widely preferred by the public (Khew, Yokohari, & Tanaka, 2014; Yuen, Kong, & Briffett, 1999) and subtly promoted by the national greening policies. However, despite their widespread social acceptance, these green spaces tend to be low in biodiversity and provides few ecosystem functions (Yee, Corlett, Liew, & Tan, 2011). Meanwhile, the value of minimally managed or unmanaged greenery such as lowland forests, freshwater swamp forests, and scrublands have been overlooked since these are often viewed as temporary landscapes waiting to be developed. Many future residential and commercial developments labelled on the Urban Redevelopment Authority (URA) Masterplan are sited on these ‘transitory’ green areas, which usually consists of forests and scrublands. This approach to urban development may be problematic, as the fallowing green areas possess inherent ecological and cultural values that are ignored in the planning process. As calls for conservation are often seen as impractical in the economically-driven state, alternative design and planning approaches are needed to address the social and ecological consequences of rapid development.
Both managed and unmanaged greenery in Singapore have potential to contribute to improving the health of the urban ecosystem and the diversity of urban wildlife (Tan, 2010). It is unhelpful to see economic development and environmental conservation in a zero-sum game, where a clear winner or loser emerges in any contestation over a land lot slated for development. Instead, we look to find means of reconciling these objectives that are currently framed in opposition to each other and develop design strategies that could address socio-cultural, economic and environmental concerns. surrounding context. Students should choose his/her own site within the woodland or in its immediate periphery, based on problem statements and topics arising during the research period, aided by the various design exercises and input sessions.
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A 30hectre small patch of fallowing land in Ang Mo Kio district has grown into a mature secondary forest since the former kampong and its accompanying landscape was phased out in the 1970s. Currently, the Tagore forest has become an important stopover for wildlife moving to/from the central catchment Nature Reserve. According to Nature Society Singapore (NSS)’s report (2016), this fairly undisturbed area is distinctively rich in biodiversity - It is home to more than 32 noteworthy plants, several critically endangered animals including the Sunda pangolin, Sunda slow loris, banded leaf monkey and 71 forest birds species that could be further threatened if connective elements such as corridors and stopovers are lost or diminished. The forest is also regularly utilized by some member of the community. Along several informal footpaths and two scenic freshwater streams running through the both sides of the forest, recreationists can be seen trekking, strolling, and cycling towards Lower Seretar Reservoir. Sporadic informal ‘home gardens’, residents whom enjoy living near the greenery and bird watchers can also be spotted along the forest bordering estates, offering a vestige of the old kampong life that once thrived in the area. The forest patch is bounded by a 6-lane wide major road along the east side of the nature reserve (West), 4-lane wide neighbourhood road (East and South) and major highways SLE (North), making cross-boundary connectivity a challenge. It is also surrounded by a business district and two residential towns (Teachers’ Housing Estate, & Lentor Estate) which consist of private landed houses, low-rise condominiums, institutions & industrial areas, several new development plots, and reserved sites for future development. These neighboring built environments are neither distinctive nor varied; they are typically landscaped of private house estates with monotonous greenery, similar streetscapes and cookiecutter plans with catalogue recreational facilities inserted in every cluster. Such homogenous landscapes are conducive neither to the formation of a neighborhood identity nor to the establishment of a healthy ecological network, calling into question current design and planning approaches which ignore the specificities of site context.
In the 2014 URA master plan, the site is zoned as a reserved area for future use and residential housings – it is expected to be developed into several private housing clusters serving residential functions and connected to the new Lentor MRT station (Thomson-East Coast Line). Massive construction and earthworks will be slated to begin in the third quarter of this year, two rare freshwater streams will likely be cleared, and main infrastructure including concrete drains, sewers, and roads will be gradually introduced within five years. According to the recent news (Strait Times, June 2016), the URA and associate authorities (NParks) have decided to save two forested plots for at least five years, to implement a wildlife management plan for preserving or relocating critical animals and plants, and to soften the surroundings through a naturalized canal and community parks. Meanwhile, NSS highlights the significant role as a mature forest in terms of provision of ecosystem services while proposing a phase development plan to ensure buffers of two streams, reforestation along existing green corridors, and noncanalization of the river to promote aquatic and marshland wildlife.
How can we compensate for the potential environmental impact while meeting the increasing commercial and housing demands? Given the city’s development requirements, how could initial infrastructure planning be guided towards a more ecologically sustainable direction? Should the woodland be largely conserved as a destination nature park or could it be developed in an environmentally responsible fashion? Beyond simply preserving the site, can landscape architects propose design prototypes that can infuse greater ecological functions and diversity into the urban context? How can design promote a healthier lifestyle that is closer to nature for city dwellers? The studio seeks to answer these questions by devising new strategies and design applications of ecological principles, predicated on deep awareness of the multi-faceted nature of our city landscape and the intricate feedbacks between social and ecological factors in the city.
The Tagore forest patch is selected as a ‘landing’ site and serves as a point of reference for all design activities – sites selected should be inspired by findings from the woodland and its surrounding context. Students should choose his/her own site within the woodland or in its immediate periphery, based on problem statements and topics arising during the research period, aided by the various design exercises and input sessions.
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Site
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Design Principle and Approach
The studio aims to highlight the value of natural resources and ecological services, and propose ways to integrate them into our urban environments. We capitalize on the academic nature of the studio to develop ideas and schemes free of restrictions commonly faced in the practice, and beyond any constraints of political correctness. Multiple issues such as identity, multi-functionality, and livability will be examined. Students are also expected to develop their ability to read existing landscapes, to assess the environmental impact of design and planning decisions, and to convert their vision into a feasible landscape architectural form.
In this studio, we also emphasize the importance of designing with reference to principles. Specifically, we look to the field of urban ecology to provide guidelines and tenets for formulating design strategies and proposals. As a starting point, we present below a set ecological urbanism concepts and their design implications proposed by Spirn (2011). However, these are not meant to serve as design restrictions and limitations, and students are encouraged to also read and reference other materials to guide their project.
- Cities are habitats : Design the city as a life-sustaining and life-enhancing habitat/ Celebrate the natural processes that shape the urban habitat and that sustain life, make them tangible and understandable
- Cities are ecosystems: Design the city as a whole, as well as every park, building, and district within that larger whole, as ecosystems that require minimal inputs of energy and resources to build and sustain
- Urban ecosystems are connected and dynamic: Identify and portray the interplay of natural and social processes that shape and structure the city / Address social and environmental challenges within appropriate boundaries at the appropriate spatial and temporal scales / Define multi-purpose solutions to comprehensively defined problems/ Take account of history
- Every city has a deep structure or enduring context: Adapt the physical shape and structure of a city – the infrastructure of roads and sewers, the buildings and parks – to its deep structure
- Urban design is a powerful tool of adaptation: Design resilient cities / Act comprehensively and incrementally.
In order to facilitate the studio objectives, six basic studio approaches will be emphasized during the entire semester. Ultimately, a high degree of invention, pragmatism and practicality is expected in the planning and design proposals.
- Research centered design: there will be an emphasis in exploring the relationship between documentation and analytical research through diverse conceptual frameworks.
- Site specificity: design is based on strong awareness of the geographical characteristics of the surveyed sites, locality and reality.
- Wide ranging spectrum: the spectrum of research happens across scales, from a neighborhood-scaled plan to a landscape detail such as a tree in a resting place.
- Urban ecology: mapping exercises provide understanding of the ecological systems and feedbacks in the site and surrounding context to inform design decisions.
- Multi-functionality: urban landscapes can potentially encompass various functional layers. Students are encouraged to produce solutions that address multiple concerns simultaneously.
- Environmental justice: human and nature may have different demands, but the research takes into consideration an ecologically sustainable direction overall.
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Studio Structure
This is the first studio in Master programme of Landscape Architecture with participants from fourth year in NUS architecture and graduates from other universities in bachelor of Landscape architecture or associated fields. The 14-week period consists of 3 weeks of preliminary research to understand site context, with in-depth input sessions from professionals and field trips to identify problems and challenges. The next 3 weeks are devoted to applied research activities (including site observation & measurements, interviews with residents and other relevant persons, and detailed mappings) to acquire relevant knowledge while building design strategies. The last 8 weeks focus on design application, which will culminate in a convincing design solution for the issues identified by the individual designers. A group of experts including ecologists from the Nature Society Singapore and National Parks Board, housing planners from URA, and NUS MLA lecturers will assist students in avoiding the pitfalls of shallow and superficial interventions in this academic exercise. The guidance will offer immediate and accurate perspectives on the causes and consequences of deforestation on the island, as well as how urban ecology principles can be applied to address these issues.
Students were tasked to work as individuals and in groups according to the requirements of each stage of the studio. Designers ended up with an individual project or small group projects after discussing with tutors. Every student was also expected to contribute to studio management and documentation tasks, including leading the group (Schedule planning / Field trip planning / Presentation preparation), editing materials for studio publications (Publication / Diary / Photo documentation of studio process), managing information and resources (Sharing and collating references / Data management / IVLE management).
References
Brook, Barry W, Sodhi, Navjot S, & Ng, Peter K L. (2003). Catastrophic extinctions follow deforestation in Singapore. Nature, 424, 420 - 423.
City in a Garden. (2015, 15/01/2015). Retrieved 21/07/2015, 2015, from https://www.nparks.gov.sg/about-us/cityin-a-garden Corlett, Richard T. (1992). The Ecological Transformation of Singapore, 1819-1990. Journal of Biogeography, 19(4), 411-420.
Khew, JoanneYuTing, Yokohari, Makoto, & Tanaka, Toshinori. (2014). Public Perceptions of Nature and Landscape Preference in Singapore. Human Ecology, 42(6), 979-988. doi: 10.1007/s10745-014-9709-x
Laurance, William F. (1999). Reflections on the tropical deforestation crisis. Biological Conservation, 91, 109-117.
NPTD. (2013). A Sustainable Population for a Dynamic Singapore Population White Paper. Singapore: National Population and Talent Division.The Planning Act Master Plan Written Statement 2014. (2014). Retrieved from https://www.ura.gov.sg/uol/~/media/ User%20Defined/URA%20Online/master-plan/master-plan2014/Written-Statement-2014.ashx.
Spirn, A. W. (2011). Ecological urbanism: a framework for the design of resilient cities. Retrieved from http://annewhistonspirn. com/pdf/spirn_ecological_urbanism-2011.pdf
Sustainable Singapore Blueprint. (2015). Ministry of the Environment and Water Resources and Ministry of National Development, Singapore, from http://www.mewr.gov.sg/ssb/files/ssb2015.pdf.
Tan, Tiang Wah Hugh (2010). The Natural Heritage of Singapore (3rd ed.). Singapore ; New York: Prentice Hall.
Yee, A. T. K., Corlett, Richard T., Liew, S. C., & Tan, Hugh T. W. (2011). The vegetation of Singapore - an updated map. Gardens’ Bulletin Singapore, 63(1&2), 205-212.
Yuen, Belinda, Kong, Lily, & Briffett, Clive. (1999). Nature and the Singapore resident. GeoJournal, 49(3), 323331. doi: 10.1023/A:1007060728210
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CHRONOLOGY
8 August - 14 November 2016
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Studio Orientation
Our studio begun with a studio orientation by studio tutor, Prof Hwang Yun Hye. The students were assigned a couple of exercises to be completed throughout the course of the semester.
Exercise 1 was issued, an assignment based on the understanding of ecological design principles and strategies, students were tasked to apply relevant the ecological theories on the Tagore forested area.
Exercise 2 was assigned in a bid for students to acquire a comprehensive understanding of the site through three types of research activities, namely a) Theoretic investigation b) Physical condition c) Intangible contents. The students were tasked to comprehend a series of readings, and translate their understanding into contextual studies.
Studio Orientation
Our studio begun with a studio orientation by studio tutor, Prof Hwang Yun Hye. The students were assigned a couple of exercises to be completed throughout the course of the semester.
Seminar Session 1 by Dr Ho Hua Chew
Exercise 1 was issued, an assignment based on the understanding of ecological design principles and strategies, students were tasked to apply relevant the ecological theories on the Tagore forested area.
Exercise 2 was assigned in a bid for students to acquire a comprehensive understanding of the site through three types of research activities, namely a) Theoretic investigation b) Physical condition c) Intangible contents. The students were tasked to comprehend a series of readings, and translate their understanding into contextual studies.
Seminar Session 1 by Dr Ho Hua Chew
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the secondary forest has a very high potential of transforming primary forest, given time.
, whereby the group attempted to track the location of the streams, and established that forest used to be a rubber plantation. Shawn verified that
After the seminars, there was a sharing and pinup session among peers with regard to their individual contextual studies, selected accordingly from their areas of interests. Topics such as vegetation, biodiversity, hydrology and urban infrastructure were shared.
for an understanding on the workings and importance of urban forest ecology.
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The session was followed by a second seminar “Urban Greenery and Ecological Network in Singapore” , whereby he explained the landscape planning policies and legal framework drafted out by the dedicated institutions in Singapore. primary forest, given time.
15 Aug Exercise 1 Pin up Seminar 2 & 3
20 19 Aug Forest Survey 3 MLA 2016.indd 20 9/12/2016 5:20:26 PM
Exercise 1 & 2 Final Presentation
The final presentation of Exercise 1 & 2 was joined by
The students presented their findings in the categories of “Physical” and “Intangible” aspects of the site. These information were imperative to the design process in the later phase of the semester.
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The students were required to propose their issue statements and also look for suitable approaches to resolve them.
5 Sep Proposal of Issues
19 Sep Mid Review
4 guest reviewers were invited for the mid review session, namely, Mr Tan Kit Chuan from NParks; Dr Abdul Rahim Hamid, Research Fellow of NUS Department of Architecture, Dr Jessica Cook, Associate Professor of NUS Department of Architecture, and Mr Ryan Shubin, Landscape Architect from Ramboll Dreiseitl.
The reviewers gave the students a myriad of advice and offered design suggestions regarding their individual research and site issues and how the students could possibly progress towards a design.
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Following the Mid Review, Dr Mark McDonnell joined the studio in a session and the students presented their project schemes to him. The session was fruitful, whereby he contributed valuable advice as to how they could proceed with their design.
26 Sept Mid Review Follow Up
10 Oct Design Development
During this period, the students focused on the development of their design strategies, making them more realistic and specific to their sites.
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Students returned to their targeted site to confirm feasibility of their design proposal with studio tutor
26 Oct Last Site Visit to Confirm Design Feasibility
29 Oct Design Feasibility Consultation
A studio session is conducted with Mr Tobias Baur from Ramboll Dreiseitl, who is an experienced landscape architect. The students presented their design development and the session concluded on a favourable note whereby he gave advice crucial to the progress of their projects.
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More intensive studio sessions were needed to further refine individual works.
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PRELIMINARY RESEARCH
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TAGORE HISTORICAL TIMELINE Changes of Landscape and Landuse
36 p g g g
p g g g MLA 2016.indd 36 9/12/2016 5:21:59 PM
Sources: NUS Geography Department NHB (www.nhb.gov.sg)
URA Ang Mo Kio Planning Report 1996 https://www.cardcow.com/images/set548/ card00060_fr.jpg https://remembersingapore.org
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LANDUSE
Resource: URA Masterplan 2014
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39 240m MLA 2016.indd 39 9/12/2016 5:22:03 PM
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41 240m MLA 2016.indd 41 9/12/2016 5:22:05 PM
42 LAND Topography (5m) Topography Valuability Analysis 200m 120m MLA 2016.indd 42 9/12/2016 5:22:09 PM
43 Larger scale slope Smaller scale slope 200m 120m MLA 2016.indd 43 9/12/2016 5:22:09 PM
HYDROLOGY
Natural Waterbodies
Manmade Waterbodies
Watershed
Water Direction
2 km N
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WATER FLOW 47 MLA 2016.indd 47 9/12/2016 5:23:33 PM
CHARACTERISTIC OF NATURE STREAM
CHARACTERISTIC OF NATURE
STREAM
CHARACTERISTICS OF NATURAL STREAM
Lentor Stream
Lentor Stream
Lentor Stream
Nature lover’s track
Nature lover’s track
Wild Pig(RC)
Tagore Stream
Tagore Stream
Tagore Stream
Angiopteris evecta
Dracaena fragrans
Solfshell Turtle
Fishing Gardening
Fishing Gardening
Pennisetum purpureum
Painted Bronzeback(WC)
Dieffenbachia amoena Asian Toad(WC)
D-D Section
Plan A
Plan B
Plan B
C-C Section
A-A Section
Elaeis guineensis
Ficus variegata Elaeis guineensis Dracaena fragrans
Iguanura geonomiformis
Pennisetum purpureum
Long-tailed Macaque(WC) Areca catechu
Common Treeshrew(WC)
Caryota mitis
Dieffenbachia amoena
Malayan Giant Frog(RC)
D D C C
D-D Section
Plan C
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Angiopteris
Areca
Spotted
Copper-cheeked Frog(RC)
Elaeocarpus
Pennisetum
Section
Section
geonomiformis
Plan A
Plan C
Angiopteris evecta Spathodea campanulata Areca catechu
Areca catechu Leea umbraculifera
Hevea brasiliensis
Indochinese SpoGed Barb(WC)
mastersii Horsfieldia polyspherula
House Gecko(WC)
catechu Aglaonema commutatum
Asplenium longissimum Caryota mitis
Pennisetum purpureum
Masked Rough-sided Frog(RU)
Musa acuminata
Dieffenbachia amoena
Musa acuminata
purpureum
Bamboo
Bamboo
Durio zibethinus Pellacalyx axillaris
Caryota mitis
E-E Section A B E E B A 49 MLA 2016.indd 49 9/12/2016 5:23:50 PM
Caryota mitis Caryota mitis Aglaonema commutatum
B-B Section
The middle of the main island contains a number of rounded hills; west and southwest the land is a series of low ridges, while east and southeast, the land is generally flat.The highest point of Singapore is Bukit Timah at only 545 ft. (166 m), while the lowest point is the Strait of Singapore (0 m).
Composition
Sand is typically imported mostly from Indonesia, but also from the other neighbouring countries of Malaysia, Thailand and Cambodia.
Sand
Imported
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Deforestation
Excavation and filling analysis
Height analysis; the lower area accounted 17ha which is much better for vegetation and store water.
Slope analysis: the area accounted for 18ha where slope is smaller is approriate for infrustructure.
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SINGAPORE WILDLIFE MAP
Habitats and Related Organisms
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Patches Location and Connection 5000m N 53 MLA 2016.indd 53 9/12/2016 5:24:10 PM
GREEN SPACES IN TAGORE VICINITY
FAUNA HABITATS
Source From : Flora Fauna Web. (n.d.). Retrieved September 08, 2016, from https://florafaunaweb.nparks. gov.sg/Home.aspx B. (n.d.).
Animals that visit the durian tree, Durio zibethinus. Retrieved September 08, 2016, from http:// www.besgroup.org/2014/05/01/animals-that-visit-the-durian-tree-durio-zibethinus/ Refer. (n.d.). Retrieved September 08, 2016, from http://refer.dnzhishi.com news/2015/0423/277674.html
Bird Ecology Study Group, Nature Society (Singapore). (n.d.). Retrieved September 08, 2016, from http://besgroup.blogspot.sg/2007/01/breeding-ecology-of-little-tern-6.html
Simpoh air (Dillenia suffruticosa) on the Shores of Singapore. (n.d.). Retrieved September 08, 2016, from http://www.wildsingapore.com/wildfacts/plants/others/dillenia/suffruticosa.htm
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EDGE BETWEEN HUMAN AND NATURE
Edge Structure
Edge Shape
Eight common boundary type
Patch Shape
Edge Management and Strategy
Boundary arrangement for protecting a natural resouce area
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PRECEDENTS: EDGE MANAGEMENT IN SINGAPORE
Bukit Timah Nature Reserve
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HISTORICAL CHANGES OF NATURE RESERVE Changes of Edge and Landuse
58 CENTRAL CATCHMENT CENTRAL CATCHMENT CENTRAL CATCHMENT CENTRAL CATCHMENT BUK T T MAH NATURE RESERVE BUK T T MAH NATUR RESER E B K T U
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EDGE IN TAGORE NEIGHBOURHOOD
Tagore Forest Structure
59 100m
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TEMPERATURE GRADIENT ANALYSIS Surface Temperature at Site
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VEGETATION SPECIES MAPPING
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VEGETATION HABITAT MAPPING
Locations in Tagore forest
72 N
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Canopy Density Canopy Height Topography Valuability Assessment 120m N Valuable Vegetation Patches 74 MLA 2016.indd 74 9/12/2016 5:28:13 PM
OVERLAYING VALUABLE FAUNA AND VEGETATION HABITATS
There is a positive correlation between these two mappings.The areas that are overlapped are the valuable patches for both animal habitats and forests.
The studio is divided into different teams to consider the different aspects on site and to come up with ideal scenarios to safeguard the interest on site according to the different scenarios.
The issues considered are:
1) Forest Conservation & Inserting Habitats
2) Water & Edge Conditions
3) Accessibility & Resource Management
RECOMMENDED SCENARIOS GIS results
N 120m N
120m
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N 1 3 4 5 7 8 9 10 11 12 13 14 15 16 18 19 20 21 21 22 17 6 2 76 MLA 2016.indd 76 9/12/2016 5:28:22 PM
VARIOUS LANDSCAPES IN TAGORE FOREST
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Sources: URA Masterplan 2014 (www.ura.gov.sg) Google Maps (www.maps.google.com)
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ECOSYSTEM SERVICES
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HABITATS / LANDUSE
Size and Connectivity of Major Habitat in Singapore
Distribution of secondary forests on land zoned for residential, commercial, institutional and reserve sites in URA Master Plan (2014)
Source: Puay Yok Tan Yuanqiu Feng Yun Hye Hwang , (2016),”Deforestation in a tropical compact city (Part A)”, Smart and Sustainable Built Environment, Vol. 5 Iss 1 pp. 47 - 72
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ECOLOGICAL CONNECTION
Source: Abdul Hamid, A. R. 2015. Ecological Networks, Their Application For Biodiversity Conservation In An Urbanized Environment. Doctoral Dissertation. National University of Singapore
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PROPOSED SCENARIO FOR NATURE CONSERVATION
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PROPOSALS
CONSERVING TAGORE: REHABILITATING AN URBAN FOREST
Sun Hao Jen Ashley P90
CLIMATE SENSITIVE LANDSCAPE INFRASTRUCTURE
Yan Ran P107
RESOURCE MANAGEMENT IN TAGORE FOREST
Dai Junwei P117
TAGORE NEIGHBOURHOOD AS A FOREST EDGE
Amanda Jennifer Chandra P133
INSERTED URBAN GREENERY AS LOCAL HABITAT
Bai Zhuhui P149
INTERWOVEN WATERSCAPE OF TAGORE FOREST ESTATE
Wu Yitong P165
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CONSERVING TAGORE: REHABILITATING AN URBAN FOREST
Sun Hao Jen Ashley
Since independence, Singapore managed to industrialize rapidly and has continuously managed the changing demands of the demography and the economy. In order to establish urban habitats for the people, much of the secondary forests in Singapore have given way to the built environment. Our site of focus, the Tagore Forest faces a similar threat of being repurposed into community estates, catered for the growing population.
This project aims to reconcile the conflict of reducing forest size in the face of urban development, while conserving the biodiversity of the forest. Design of the project revolves around expanding habitats for specific wildlife endangered species, which calls for a heterogeneous mix of patches with variable cover, species and stand age classes. Cultivating a forest in a city means creating favorable conditions with foresight over long periods of time, because forests are slow growing.
In addition, this urban forest project aims to be responsive to the needs of the local residents. Some urban residents may be unfamiliar with and even fearful of the dense wooded territory. While improvement of forest biodiversity and potential benefits are prioritized, residents living nearby should play a part in enjoying the forest as a recreational space. Alternative forms of the human-forest intervention is proposed to encourage emotional attachment to the forest as a respite within the city, a place for social interaction and a way to connect to a new home. These interventions are namely using balconies as elevated boardwalks, inviting residents to partake in community gardening and allowing the gardens to mature into wild forest buffers after 20 years so as to widen the forest corridor. This urban forest landscape hopes to inspire attachment to place by extending the spectrum of outdoor sensory experiences and offering people an active role in preserving the forest.
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92 N MLA 2016.indd 92 9/12/2016 5:30:08 PM
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IDENTIFYING VALUABLE PATCHES FOR TARGET FAUNA
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CLIMATE SENSITIVE LANDSCAPE INFRASTRUCTURE
Yan Ran
While the forest will be replaced by residential areas in the future, the increase of intensity of development will worsen microclimate condition, as well as fragmentation of habitat. This project aims to propose a multifunctional landscape infrastructure to minimize the urban heat island effect and facilitate wildlife movement while keeping the infrastructure functions according to the need of the users.
Three main strategies are proposed. Firstly, a suitable location of the road is chosen according to the topography in order to reduce the soil waste for road construction. The existing large canopy trees are maintained by increasing the density of the vegetation structure. The road parallel to prevailing wind is fully utilized as efficient ventilation corridor. Secondly, to provide a microclimate adaptive cooler promenade for people. Some ecological methods will be introduced here such as vegetated swale that can induce evaporative cooling to the surrounding. Additionally, micro-topography based on existing topography is created to bring different air pressure and consequently creating air flow. Besides that, existing water feature is used to create a linear park to provide more cooling effect. In addition, homezone street type and shared street space provide a living street with more activity functions. Low speed vehicular permeable roads minimize the heat island effect. Thirdly, trees for fauna’s food resource are inserted along the street. There is continuity of the tree canopies on both sides of the street to allow the arboreal creatures to move around.
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TEMPERATURE ANALYSIS
ANIMAL HABITATS
DESIGN REQUIREMENT
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Existing Condition Existing Condition Existing Condition URA Plan URA Plan URA Plan MLA 2016.indd 106 9/12/2016 5:30:37 PM
ROAD NETWORK PLANNING
Possible Juctions
Forest & Stream
Contour
GPR Distribution
Total area: 30.29ha
Road area:4.69ha
Road porpotion:15.5%
Average GPR:2.2
Sun Path & Prevailing
Prevailing wind in Nov - Mar
Prevailing wind in Jun - Sep
Wind Analysis (Nov - Mar)
Roads in the direction parallel to the prevailing wind can be used as ventilation corridor.
Shade Analysis
Overlay of the shade on 10am, 13pm, 17pm all year round
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ROAD TYPOLOGY BASED ON WIND AND SHADE
Road direction is parallel to the prevailing wind. There are not much shadow on the road.
Wind is blocked by the buildings. There are a lot shadow on the road.
Road direction is parallel to prevailing wind. Roads are near to the stream.
Road direction is parallel to prevailing wind. Roads are near to the forest.
Road direction is not parallel to prevailing wind. Roads are near to the forest.
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Type A
Type C
Type D
Type E
A B C D E N 50 m MLA 2016.indd 108 9/12/2016 5:30:39 PM
Type B
ROAD DESIGN PROPOSAL
Keep more green volume and shaded area.
Vegetated swale induce evaporative cooling to the surrounding. Micro topography based on existing topography are created to bring different air pressure and to create air flow.
Using water feature to create a linear park which provides more evaporative cooling and more interesting walking experience for people.
Provide shaded living streets which has less car getting through in order to decrease the impact on forest
Homezones and shaded street on the low vehicular speed permeable roads in order to minimize heat island effect.
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Type A
Type B
Type C
Type D
Type E
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110 MASTERPLAN N 50 m MLA 2016.indd 110 9/12/2016 5:30:46 PM
PLANTING STRATEGY
Providing Continuous Shaded Area Inserting Food Resource for Fauna
pervious material
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Crossing on a speed bump
Designed Treatment for Pedestrian Crossing N 50 m
bus stop with green roof planter box
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LINEAR PARK
Broad walk
Waterside canopy tree
Calophylium Putcherrimum
Syzygium grande
Terminilia catappa
Pellacalyx axillaris
Waterside sub-canopy tree
Cerbera manghas
Clappetonia ficifolia
Waterside shrub
Leea indica
Dillenia Suffruticosa
Mimosa pudica
Existing tree
Acacia auriauliformis
African Tulip Adinandra dumosa
Existing stream
Lentor Stream
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SHADED GARDEN Before
Broad-leafed Mahogany
Rain tree
Dysis leptocheilos
Plumeria rubra
Drainage
Traffic light Street lamp
After
Heat from sun
Tree filter
35% shading
Acacia cincinnata
Peltophorum pterocarpun
Pterocarpus indicus
Piper aduncum
Acacia mangium
Pennisetum purpureum
Panicum maximum
Stachytarpheta indica
Cerbera manghas
Plumeria obtusa
Dillenia suffruticosa
Mimosa pudica
Ardisia elliptica
Heat from sun
Tree filter
Heat from sun
70% shading
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Section A-A’
Ornamental trees Big canopy trees (provide continuous shade) Shrubs Plants with remediating properties (cleanse the water run off)
Section B-B’
N N
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RESOURCE MANAGEMENT IN TAGORE FOREST
Dai Junwei
Facing with loss of nature resource due to housing development on secondary forest in Singapore, we need to find the appropriate and sustainable way to utilize the resource. These resources ought to be reused and adapted in the new development. The project aims to reuse site resources such as water, trees and soil and to recycle what is existing on the site rather than transporting large quantities of material in and out.
Firstly, in terms of planning the value of the two streams in site are reassessed and the Tagore stream will be naturalized based on the hydrological impact assessment. Some bioretention swales will be added in the low lying area along the stream as the main approach to utilize water. The valuable trees will be reserved as the main plantings in the residential park and other trees will be recycled as surface pavement material and playful structures. The existing topography is utilized to design new road network, layout of buildings and topographic landscapes, which has minimum interverence to nature.
Secondly, one residential patch based on the planning area is selected to show how the resources can be fully utilized by phased landscape development combined with building construction. Layout of building is designed to minimize intervention of humans. Storm water can be stored and recycled for irrigation in the low lying area before being discharged into Tagore Stream. Excavated soil dug from the building foundation can shape the terrain of the low area to accommodate both storm water and human activities. Valuable trees are reserved as the ecological extension of the residential park while other trees are made into playful structures and wooden deck which fits the terrain.
This project hopes to give a new way to design high rise housing development on former secondary forest by resource management.
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TIME LINE OF URA PLANNING
Waste of Resource
Water:
Let the stormwater stay longer in the low area and slow down the speed of water in Tagore Stream while irrigating the vegetation in the condo.
Trees: Plan the layout of building to follow the location of trees and utilize other trees to be the material of playful facilities and pavement.
Land: Apply the core tube as the structure of the building to fit the topography and minimum the earthwork and utilize the excavation to shape the landscape terrain.
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2014 Launch master plan to public 2016 Start to clean part of the forest 2019 Finish clearing the land 2020 Construct the road, MRT, infrastructure Build the park, plant the urban trees Peak discharge Total trees Landform 7740m³/hr=4× /hour otal trees: 1456 3-times Total tree lost: 1250 Deficit: 2120533m3 Topsoil lost: 60000m3 = 6000× 25704m³/hr=12× /hour Removed trees: 1456 Planted urban trees: 206 Excaved soil: 669867 m³=67000× Required fill: 2790400 m³=279040× Is there a better way to develop the forest?
Strategy
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HOW TO MANAGE WATER
The Role of Streams in Tagore Forest
Water sources of two streams
Tagore Stream has 4 managed sources however Lentor Stream has only 2 managed source, which means Tagore Stream is much more important than the Lentor Stream on the aspect of water connector due to its complicated structure.
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Teachers` Housing Estate Central catchment Tagore RD Forest
Yio Chu Kang RD
Forest, Yio Chu Kang RD and Teacher`s Estate
Tagore Stream
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Lentor Stream
HOW TO MANAGE WATER
Catchment of the Two Streams
According to the formula of the peak discharge calculation Q = c i A The peak discharge of Tagore is almost 2.6-times than that of Lentor. Because the catchment area of Tagore is 2.5-times than that of Lentor and the degree of slope in the catchment of Tagore is also much steeper than that of Lentor which effects the coefficient.
QTagore = 2.6 QLentor
Capacity of Flood Storage of the Two Streams
Tagore Stream has stronger capacity of floud storage than Lentor Stream.The lowest area is just the place where 4 source finally join and the cancel of Lentor also will give a little burden to Tagore. It can be used as bioretention swales. The concret canal of up reach of Tagore should be naturalized and also planed a small pond in the junction of the three branches.
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HOW TO MANAGE TREES
Reserved Trees on Steep Slopes
The dense secondary forest with high generation which is just on the slope near the lowest area should be reserved because of not only its high biodiversity but also its function of slope protection and its moisture content ability. Combined with the planned swale in this area, this place can be utilised as a rain garden serving the surrounding residential areas.
Recycle Wood from the Trees with Low Value
There are about 1159 trees in total recycled to be used as material of playful facilities and pavement. These trees with little value are removed for housing devlopment although there are small part of sparse forest with high generation.Because some trees are even on the flat area which can be used as residential development.
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HOW TO MANAGE LAND
Landuse Based on the Terrain
Flat areas without valued trees are used as development of residential areas and Flat areas with valued trees are used as biodiversity connectors. Slope areas without valued trees are modified for the mountainous residential area and slope areas with valued trees are reserved as part of residential park.
Road Network Based on the Terrain
The road planning in Tagore Forest adapts to the terrain and connects the important surrounding infrastructure. The network can be divided into two categories based on the size. The maximum slope of main road, sencondary road is 7% and10% respectively. Main road functions as the connector in landscape scale and secondary road connects different residential zones in the site.
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HOW TO MANAGE LAND
Cuts and Fills Based on the Terrain
The main area that need balanced eartwork is the east part of the forest where residential development is approriate to plan because of its “V” shape of section. So the slope can be adjusted to terrace based on the balanced earthwork.
Blalanced earthwork
DESIGN AREA
Selection of The Design Patch
Water
Land
Tree
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LAYOUT OF BUILDINGS
STORMWATER MANAGEMENT
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TREE MANAGEMENT
3D Green Mass Recycled Trees
LAND MANAGEMENT
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Adjustment of topography MLA 2016.indd 123 9/12/2016 5:31:50 PM
MASTER PLAN
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B A C D MLA 2016.indd 124 9/12/2016 5:31:50 PM
AThis large open space is a good green area for residents to gathering together where interpersonal relationship can be promoted psychologically with the comfortable green space.
This place has two parts which are connect by wooden deck. One is the area under the building where children can play without limit of weather. The other is on the other side of stream where a big banyan tree can used as the playful facility.
This place under the building is the transition area with dense vegetation between the condo and Tagore Stream, providing habitate connection between condo and Tagore Stream while providing privacy for the condo.
DThis area is dense forest with high generation which is reserved together with the central froest, giving residents an ecological corridor to the central park.
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B
C
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TAGORE NEIGHBOURHOOD AS FOREST EDGE
Amanda Jennifer Chandra
Recognising special qualities of Tagore neighbourhood as being surrounded by secondary forest, various potential and challenges are addressed in order to retrofit the neighbourhood to adapt into future deforestation and development scenario whereby the cost of deforesting can be compensated by landscape treatments on the existing neighbourhood.
Various strategies will be implemented to bring back the connection between human and nature. The first design strategy is to compensate the loss of forest by learning from the composition of the plants in Singapore’s primary forest and applying similar forest composition as planting scheme in the neighbourhood. Some valuable and endangered forest species are introduced within the neighbourhood forest.
The second strategy is to retrofit existing building structures and re-design new housing typology to fit the context of forest edge. Light broad walk structures will be built to control and ease the circulation within the neighbourhood forest while easing the access for management. The broad walk will also subtly delineate the boundary between private backyard space and public area. Backyard decks are built to facilitate backyard domestic activities on landed housing while the residents can enjoy their backyard forest at the same time. Rooftop connectors are added to facilitate domestic activities and rooftop leisure activities on condominium. New housing typology is constructed while respecting the existing maturing forest.
The third design strategy is combining design with people’s management, in which the residents can actively taking care and manage the forest while they are doing their domestic activities every day. Sustainable living is introduced by the forest nursery management scheme in which the residents can enjoy the product of their backyard forest garden. All design strategies are to be designed with time. Re-development phases will be planned for the planting, rebuilding, and management activities in the process of retrofitting the neighbourhood.
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EXISTING SITE CONDITION
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N MLA 2016.indd 132 9/12/2016 5:32:27 PM
133 N N MLA 2016.indd 133 9/12/2016 5:32:27 PM
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walkway
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STRATEGY 1
Recreating Forest in the Neighbourhood
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139 N N MLA 2016.indd 139 9/12/2016 5:33:29 PM
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Various Activities along Backyard Nursery and Forest Edge
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Images are taken from Nature Society (Singapore) Report, Nature Society’s Position on Lentor (Tagore) Forest, April 2016
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INSERTED URBAN GREENERY AS LOCAL HABITATS
Bai Zhuhui
Tagore forest has a rich history, from village to plantation and then to secondary forest. It supports 94 animal species. With urban sprawl, would those valuable animal be isolated and homeless? The project, themed “reducing urban context gaps for animal movements”, proposes a framework of improved urban context which qualify with high standard to have dynamic animal movements.
Five issues are highlighted. Firstly, while regarding Singapore as one green system, Tagore forest is isolated. In small scale, though locates well, Tagore Forest does not have a strong connection with surrounding green spaces. Also, animal’s movements and habitats would be affected by the shrinking of forest and development of urban area. Urban context could provide potential habitats and be stepping stones. On the other hand, it can also create many barriers for animal movement. Last but not the least, balancing human and animals needs is also a critical problem during the process.
In order to solve the problems listed above, three strategies are used: 1. Aggregating available open spaces. This will be achieved by creating multiple functional zone within existing driveway system and also designing new house entrances. 2. Inserting local habitats in managed environment by designing new vegetation layers and utilize vertical structures such as fences and walls. Meanwhile, green roof is also a recommendable approach. 3. Proposing new housing landscape typology to support continuous growth of nature. This strategy would achieved based on setting up the link between front yard and street greenery, backyard and drainage.
During the process, solving urban potential problems for animal movement is the core of the design. A win-win situation for both human and animals’ movement is the goal to achieve.
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EXISTING URBAN GREENERY
Urban Greenery Typologies
Tagore forest Private Green Spaces Public Green Spaces 30 Hectare 2.3 Hectare 2.9 Hectare 50 m N MLA 2016.indd 148 9/12/2016 5:35:13 PM
SITE FENCE ANALYSIS
Urban Managed Enviroment
Solid fence
SITE TREE ANALYSIS
Fruit tree
Flowering tree
Others
Fence with gaps N
Urban Managed Enviroment
50 m N 50 m
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ANIMAL MOVEMENTS AND HABITATS
Tagore Forest Animals
Straw - headed bulbul
Banded leaf moneky
Giant asian river frog
Red-legged crake
Painted bronzeback snake
Sunda pangolin
Blue-eared kingfisher
Slow loris
Softshell turtle
White rumped shama
ANIMAL DISTRIBUTION MAP
Tagore Forest Animals
100 m N 100 m N
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Chestnut-bellied malkoha
Red-legged crake
EXISTING ANIMAL MOVEMENTS Tagore
Forest
Tall Grassland Sparse Forest Dense Forest Dense Forest & Tall Grass Scrubland Aquatic Sparse Forest & Disturbed Area
Changeable hawk eagle
Square-tailed drongo-cuckoo
Straw head bulbul Oriental pied hornbill
Averrhoa carambola
White-throated kingfisher
Orange bellied flowerpecker
Oriental magpie-robin
Antigonon leptopus
Oncosperma horrindum Cinnamomum iners
Macaranga griffithiana
Cinnamomum iners Claoxylon indicum
Musa acuminata
Sunda pangolin
Long-tailed macaque
Common plam civet Painted bronzeback
Wild pig
Durio zibethinus Manihot esculenta
Artocarpus heterophyllus
Kyllinga brevifolia
Crimson sunbird
White rumped shama
Common emerald dove
Alstonia angustiloba
Caryota mitis Hevea brasiliensis
Banded leaf monkey
Slow loris
Green creasted lizard Softshell turtle Malayan giant frog
Manihot esculenta
Colocasia esculenta Angiopteris evecta
Spathodea campanulata
Alangium ridleyi
Pennisetum purpureum
Urban
Source From : Flora Fauna Web. (n.d.). Retrieved September 08, 2016, from https://florafaunaweb.nparks.gov. sg/Home.aspx
B. (n.d.). Animals that visit the durian tree, Durio zibethinus. Retrieved September 08, 2016, from http://www.besgroup.org/2014/05/01/animals-thatvisit-the-durian-tree-durio-zibethinus/ Refer. (n.d.). Retrieved September 08, 2016, from http://refer.dnzhishi.com/news/2015/0423/277674. html
Bird Ecology Study Group, Nature Society (Singapore). (n.d.). Retrieved September 08, 2016, from http://besgroup.blogspot.sg/2007/01/breedingecology-of-little-tern-6.html
Simpoh air (Dillenia suffruticosa) on the Shores of Singapore. (n.d.). Retrieved September 08, 2016, from http://www.wildsingapore.com/wildfacts/plants/ others/dillenia/suffruticosa.htm
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BARRIERS EVALUATION
Urban Barriers for Birds
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Barries degree Weak Strong 50 m N MLA 2016.indd 152 9/12/2016 5:40:40 PM
Urban Barriers for Ground Animals
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Weak Strong 50 m N Barries degree MLA 2016.indd 153 9/12/2016 5:40:57 PM
154 MASTERPLAN C B A F I H G J K MLA 2016.indd 154 9/12/2016 5:41:05 PM
A. Exising park
B. Exising shopping area
C. Green corner------bird habitat
D. Green strip ------animal corridor
E. Green island ------animal corridor
F. Proposed street
G. Green roof
H. Apartment green roof
I . Road - side animal corridor
J. Apartment context greenery
K. animal corridor
H. Apartment green roof
I . Road - side animal corridor
J. Apartment context greenery
K. animal corridor
155 50 m N E D
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STRATEGY 1
Aggregating Available Open Space
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2m drainage 6m clear access of fire trunk Existing Condition Existing Condition Existing Condition Proposed Plan Proposed Proposed Plan 0.7m Semi Green 0.8m Sharing walkway 3m clear access of cars “Monkey ‘s food“ “Monkey ‘s food“ 12m driveway Butterfly garden “Monkey ‘s bridge“ “Monkey ‘s bridge“ Buffer 3m clear access of cars 0.8m Sharing walkway 0.7m Semi Greewalkway 6m driveway Bird nesting tree 2m new animal path 50 m 50 m Proposed Plan 2m drainage 2m new animal path Potted plants occupy both sidewalk and flowering bed 6m driveway Fruit tree at street Fruit tree at street Buffer Buffer Fruit tree in garden Greenroof 10 m Existing Condition Proposed Existing Condition Proposed MLA 2016.indd 156 9/12/2016 5:41:26 PM
Bio-soil to support plants
STRATEGY 2
Inserting Local Habitats in Managed Enviroment
New wet green animal path
Green Crested Lizard
White Rumped Shama
Straw headed bulbul
Red Legged Crake
Frog
Turtle
Slow Loris
1. Nocturnal animal noisy
2. Stiff competition from arboreal monkeys in areas where the two overlap.
3. Poisonous teeth
Hide and nesting area
Nesting area
Shrub layer needed animals
Green Crested Lizard
White Rumped Shama
Slow Loris
Sunda Pangolin
Red Legged Crake
Long-tailed Parakeet
Frog , Snail. Squirell.
Fruit Tree
Noise
Transportation/ Human
Buffer Tree Buffer Tree
For slow loris, planting design would be at least one row of buffer trees along private garden to prevent monkey from noise and make them feel safe. Another row of buffer trees needed along driveway to reduce human contact with it. Fruit tree would be in the center.
Private garden night noisy
Fruit Tree
Buffer Tree
Canopy Tree
Noise
Transportation
Banded leaf Monkey
1. Travel to the best places for food.
2. Diet consists of fresh immature leaves, forest fruits and seeds such as rambutan.
3. Arboreal lifestyle.
4. Shy in nature of which they hardly come to the ground
Fruit Tree
Private garden
Daytime
Quiet
Buffer Tree Canopy Tree
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Sharingwalkway
Semi-greeneryDriveway
Gravel Drianage Rain Runoff
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WILDLIFE MOVEMENTS
Shrub & Drainage Greenery Related Movements
Private Garden Related Movements
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Tree & Greenroof Related Movements_ Birds
Tree & Greenroof Related Movements_ Ground Animals
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STRATEGY 3
New Housing Landscape Typology
Greenroof possiblility
Garden vegetations. Garden vegetations would be used as supplement of street corridors. Green-roof . Instead of asthetic use, this green roof would focus on provide birds food and resting places. It is more for animals.
Living hedge .
Drianage greenery .
Butterfly garden .This garden would attract butterflies and bees. It also works as a hiding and feeding place for small animals and birds.
House type 1: Front yard + side yard + back yard
Front door fence. Front door hedge could be climbering plants, green hedges and also potted plants.
House type 2: Two side yard + front yard + back yard
Drianage greenery .
Green-roof. It is more for animals. In this type, green-roof could act as a bridge to link front yard and back yard.
Butterfly garden/ Bee Garden.
Side-yard . Side yard link front yard and back yard directly.
Front door fence. Front door hedge could be climbering plants, green hedges and also potted plants.
Street Trees / vegetations. Street trees are designed according to animal needs.
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INTERWOVEN WATERSCAPE OF TAGORE FOREST ESTATE
Wu Yitong
Located nearby the Central Water Catchment and 1-mile west-south of the Seletar Reservoir, two precious fresh water streams in Tagore forest was historically connected to mangrove swamp of the Seletar Reservoir in 1940s. With the rapid human development over 70 years, the connection with reservoir was cut and partial of nature streams were canalized. According to the new development plan of URA, the major patch of the Tagore forest will be converted into residential district and the nature streams will be gone before new canal construction. Consequently, the ecological corridor connection via Tagore forest will be broken and large amount of runoff will increase drastically.
Design Intent
To solve the conflicts between nature preservation and urban development, this project aims to express and highlight natural processes and dynamics through landscape design intervention.
1.Managing increased runoff and improving the water quality with new development. Based on the ecological principles and current situation of site, this project partitions the conversed area of forest and new development area, on the scenario of which increased runoff is calculated as a demand of water design. New water detention area is design for storm water management and buffer zone of soft scape is design to improve the water quality.
2.Reconnecting the ecological corridor and regenerating habitats for wildlife. Existing concrete drainages and canal are naturalized to develop a continuous water habitat for wildlife. Different types of habitat are designed to attract target species and to direct the wildlife movement.
3.Creating more interaction between human and nature.
To enhance the nature exploration and recreation experience of people, visitors are encouraged to access part of habitats to see wildlife and different types of nature landscape. Existing urban park is redesigned to be a more nature-like and multifunctional spot for residents to explore nature. Ev more, new streams are inserted into both existing and newdevelop residential area so that people could observe nature dynamic in their daily life. The design demonstrates the strong capability of landscape intervention that can solve the conflicts between nature preservation and urban development.
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Tagore Stream
164 CHARACTERISTIC OF NATURE STREAM Nature lover’s track Tagore Stream Lentor Stream Plan A Fishing Gardening Plan B Plan B C-C Section A-A Section Elaeis guineensis Ficus variegata Elaeis guineensis Dracaena fragrans Iguanura geonomiformis Angiopteris evecta Dracaena fragrans Solfshell Turtle Pennisetum purpureum Long-tailed Macaque(WC) Areca catechu Common Treeshrew(WC) Caryota mitis Dieffenbachia amoena Pennisetum purpureum Dieffenbachia amoena Asian Toad(WC) Painted Bronzeback(WC) Malayan Giant Frog(RC) Wild Pig(RC) D-D Section D D C C Plan C Plan A Plan C Angiopteris evecta Spathodea campanulata Areca catechu Areca catechu Leea umbraculifera Hevea brasiliensis Indochinese SpoGed Barb(WC) Elaeocarpus mastersii Horsfieldia polyspherula Spotted House Gecko(WC) Areca catechu Aglaonema commutatum Asplenium longissimum Caryota mitis Pennisetum purpureum Masked Rough-sided Frog(RU) Musa acuminata Dieffenbachia amoena Musa acuminata Pennisetum purpureum Bamboo Bamboo Copper-cheeked Frog(RC) Durio zibethinus Pellacalyx axillaris Caryota mitis Caryota mitis Caryota mitis Aglaonema commutatum B-B Section E-E Section A B E E B A
Reference: Map Resourse Unit.Department of Geograph Resources Lentor Stream
HISTORICAL HYDROLOGY CONNECTION SOCIAL AND ECOLOGICAL VALUE OF NATURE STREAM
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STORMWATER MANAGEMENT DEMAND OF SITE
WATERSCAPE TYPOLOGIES ANALYSIS OF SITE
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WATERSCAPE TYPOLOGIES ANALYSIS OF SITE
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STORMWATER MANAGEMENT AND WATERSCAPE TRANSITION
DESIGN DEVELOPMENT
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HABITAT DESIGN
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WILDLIFE MOVEMENT AND HUMAN ACTIVITY ARRANGEMENT
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This part demonstrates the design strategy of naturalizing concrete drainage and canal as well as design habitats to attract target species and direct the wildlife movement.
This part demonstrates the design strategy of increasing water detention area and reserving buffer zone of soft scape.
This part demonstrates the design strategy of redesigning urban park for residents to create more interaction between human and nature.
This part demonstrates the design strategy of inserting new stream into existing and new residential area to create more interaction between human and nature.
170 MASTERPLAN 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 Strating Point of Nature stream Wetland Swamp Platform Stair of Entrance Nature Stream in Exsiting Housing Area Nature Stream in New Housing Area Waterfront Park Aquatic Farming Dense Forest Habitat Grassland&Wetland Large Pond Fishing Deck Boardwalk Exit 0 50m
Part
Part
Part 1
2 Part 3
4 The entrance of Tagore Stream
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PART 1——THE ENTRANCE OF TAGORE STREAM
Naturalizing Concrete Drainage
PART 2——THE MAIN WATERBODY AREA
Increasing Water Detention Area
Dry Season
Rainy Season
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30 m N 50 m N
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PART 3——THE WATERFRONT URBAN PARK
Redesigning Urban Park for Residents
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PART 4——NEW WATERSCAPE IN HOUSING AREA
50 m N N Inserting Nature Stream into Existing Residential Area Inserting Nature Stream into New Residential Area 50 m MLA 2016.indd 173 9/12/2016 5:44:22 PM
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REFLECTIONS
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This landscape-oriented studio offers a vibrant take on designing our project with an ecological goal in mind. We were taught to survey the forest, gather data and analyze the site in great detail. I was intrigued by the marvels of nature and how the tiniest details that we had uncovered about the forest could eventually be translated into our design proposal. The academic journey started off with rigorous research and analytical thinking, and ended with an evaluative process of designing the outcome of the landscape of the Tagore forest after a presumable number of years. All in all, the landscape studio has served as a good foundation for students to build a knowledge on the landscape of Singapore, and I am excited about the future opportunities that is to come in the landscape studios following after.
The studio offered me a fresh perspective about the way to think and design. During the semester, I realized that reasonable design is based on fully analysis of the site, and the project should be progressed in steps. I learned that logical thinking and clear mind is necessary for a landscape architect. I used to focus on the superflous aspects instead of the site’s unique attributes, now I find there are a lot things should be carefully considered. Our tutor taught me to “Make it more complex”, and this is the way to learn. After this semester, I strive to improve to get better and further in next semester.
This semester’s studio is really an enjoyable learning experience for me. Not only the we managed to have hands-on learning by exploring the forest, we also got lots of input from various guests that kindly spared their time to teach us various knowledge based on their areas of expertise. It may be a tough journey. However, this studio has been successful in imparting the basic knowledge about ecology, which is something necessary for designing in Landscape Architecture field. This is just the first step for my studio mates and me. I hope that we will keep learning more in the future!
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Sun Hao Jen Ashley
Yan Ran
Amanda Jennifer Chandra
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Before this studio, I designed and planned the circulation for human, animals and habitats as only decorations in renderings. I did not consider the welfare of the animals until I encountered this project. It was like treasure hunting, and animals’ movements were my treasures hidden in the urban context. It is difficult to assess whether the animals would enjoy their new urban adventures, as I attempted to reduce barriers faced by them. I enjoyed the times when I designed for those cute living things and it felt like I was the heroine who could largely improve the living standards of animals. I am proud. I gained a lot of knowledge about monkeys, birds, and their habitats. Moreover, this ecological thinking process could be applied to my future designs.
Bai Zhuhui
This first MLA studio gave me a completely different view towards landscape architecture. Firstly, on the aspect of learning object, the core of the studio focuses on the ecological design which is a new field to me compared with my postgraduate research of contemporary landscape in China. Facing with loss of nature resource due to housing development on secondary forest in Singapore, I learned how to minimize the impact of human to environment to get a harmonious relationship between them through resource management. Moreover, on the aspect of learning, the skill of thinking critically is required to support every proposed idea. The process of design inconsists of sufficient research, essay reading or site research is more important than the outcome. Lastly, the skill of my presentation improved significantly. I hope these gains will become a stepping stone for exploring more in my future study.
Dai Junwei
Exploring in the Tagore forest is really an adventure for me. I am inspired to think that we should take the responsibility to highlight the ecological value and conserve for the biodiversity of the forest through our design. In the design process, besides hearing the advice from the different experts, I have learned to combine ecological principles as well as apply Geodesign methods to make my design more convincing. The communication with our tutors also taught me a lesson that how to think is more important than what to think. I would require critical thinking and presentation skills to improve and sell my design in the future. The topic of this semester is a great example of illustrating that as the relationship between nature and human development becomes increasingly tense, we still could find a balance between them with our landscape design intervention.
Wu Yitong
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Student Editors
Chang Mei Fen Pearlyn Liu Yu
Qian Xuanyu
Chen Wei
Wang Chao Chao
Chia Ming Kuang
Nur Afiqah Bte Agus
Copyright © 2016 Hwang Yun Hye (ed.)
ISBN: 978-981-11-1954-5
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