Juntian Chen
Inland flood prevention+Coastal freshwater supply
02. URBAN (CIRCULAR) FOOD SYSTEM
Facilitating circular food system in city region
03. GREEN LINK
Green trail+Ecological corridor
04. RUN WITH WATER
05. NEW GROUND
Transportation hub+Urban balcony
Sports park+Floodplain remediation 06. ENERGY LINK
Parking lot +Rainwater harvesting
Inland flood prevention+Coastal freshwater supply
In the coastal area of Jiangsu Province, according to current coastal reclamation and development plan of the province (2010), the distribution and management of the land for reclamation is based on the area between 2 different river esturies along the coastal line. In the map below, the future plan of tidal flat reclamation area between different esturies in 3 municipalities (Nantong, Yancheng and Lianyungang) are mapped based on the study of literature and existing document. In this project, Rudong is chosen to be the research zone for further study
The distribution of the reclamation area is based on the location of esturies
Reclamation plays a vital role in providing land for urban expansion and guaranteeing the food security for the Jiangsu Province (Yu and Xu.2017). Recent land reclamation schemes will cause 44%–45% loss of the most important ecotopes on mid-range and low-range littoral zones (Muller et al.2020). Based on the data from landsat 4-8, The maps below shows the trend of different types of landcover. In summary, the right chart shows that the area of tidal flat has been declining since 2000 and the area of land reclamation has been growing since 1996.
L A N D C O V E R (1995 )
Built area and agriculture: 727991100m²
A g ic lt e b ld g 7 7 9 0 M
Bare land: 42759000m²
B a e n d 4 7 0 0 ²
Landcover (2000)
L A N D C O V E (2000 )
Built area and agriculture: 718479000m²
Bare land: 85581000m²
Aquaculture: 32673600m² Tidal flat: 395082900m²
A q c ltu e 3 6 36 0 T a fla 3 5 2 00
Landcover (2005)
L A N D C O V E R (20 5 )
Built area and agriculture: 743504400m²
A g ic ltu e an b ld n g 7 35 4 4 0 B a e n d 7 2 7 0
Bare land: 75237300m²
A q c ltu e 7 17 20 M T a fla 3 0 7 M
Aquaculture: 73177200m² Tidal flat: 382016700m²
Landcover (2015)
L A N D C O V E R (20 15 )
A g i u l a b ild n g 8 2 8 0 ²
Built area and agriculture: 884268000m²
B a e n 14 1154 0 M
Bare land: 142115400m²
L
Aquaculture: 33068700m² Tidal flat: 500102100m²
A g ic lt e b ld g 7 7 0 M B are n d 8 58 00 ² A qu c ltu e 3 6 7 M T a fla 5 10 0
Landcover (2010)
L A N D C O V E (20 10 )
Built area and agriculture: 895839300m²
Bare land: 128404800m²
A gric ltu e n b ld g 8 9 8 9 0 B are n d 12 0 0
A qu c ltu e 4 6 9 2 0 M ² T a fla 3 8 0 M
Aquaculture: 46798200m² Tidal flat: 300813300m²
Landcover (2021)
D C O V E R (20 21)
A g i u lt an b ild n g 9 2 8 M
Built area and agriculture: 919288800m²
Bare land: 117594900m²
B a e n 117 9 9 0 M
Aquaculture: 106347600m² Tidal flat: 271883700m²
A q c ltu e 10 34 6 0 ² T da fla 2 18 8 7 0 M ²
Aquaculture: 147304800m²
A q c ltu e 14 30 8 0 M T da fla 17 36 0 ²
Tidal flat: 178367400m²
Based on previous study, 3 new landuse solutions are proposed: 1. Not suitable for both agriculture and urban development (return farmland and restore salt marsh) , 2. Suitable for agriculture(aquaculture between terraced field for salt discharge). 3. Suitable for urban developme (buffer for canal and restore wetland). The aim is for balancing the time, ecological value and economical profit in the process of developing reclamation area.
Managed relignment+ Siltation Promotion
Not suitable for both agriculture / urban development
Salt elimination+ Aquaculture in terraced field
Suitable area for agriculture / aquaculture
Restore wetland+ More room for the canal
Suitable area for urban development
Inland water storage&flood prevention+Coastal freshwater supply
Broader context
Freshwater supply capacity: 37.6 billion m³
Freshwater demand: 60 billion m³
30% of the planned drainage capacity
Nature based water strategies for risk mitigation+freshwater supply
1.Multifunctional peak (fresh) water storage + flood defence 2.Nature based coastal salinization defence solutions
Freshwater (+)
Salinization (-)
Flood from May to October
Suitability assessment of 3 development modes in the new reclamation zone 3 development modes in the new reclamation zone and water integration strategies
In Northern Jiangsu, there are 3 types of developing modes for most of the tidal flat reclamation areas based on 3 categories of suitability, and they are 1)suitable for agriculture,2)suitable for urban development,3)not suitable for both agriculture and urban development (Chen Cheng. 2017). For the area 1, the development mode is: “halophytes→aquaculture pond→cropland”, for the area 2, the development mode is: “halophytes→ cropland”, for the area 3, the development mode is “halophytes→cropland→urban development”(Xu et al.2017). Meanwhile, the development modes is also relevant to the per GDP of coastal municipalities (He et al.2021).
Indicators and their weights for the suitability assessment of the tidal flat reclamation area
Legend
Construc ed tidal inlet
Reconstruc ed fringing marsh
Stereoscopic agriculture
Boundar y of towns
Freshwater direction
Tidal flat Urban
Salt marsh and halophytes
Potential
Suitability + 3 development modes
Not suitable for agriculture and urban(halophytes→cropland)
Suitable for agriculture (halophytes→aquacultu e pond→c opland)
Suitable for urban development (halophytes→c opland→urban)
Inland water storage&flood prevention+Coastal freshwater supply
Urban food production
Compost Food industry
Facilitating circular food production model in Gothenburg
SITE: Gothenburg, Sweden
TYPE OF PROJECT: Master thesis project
SUPERVISOR: Jorge Gil, Jonathan Cohen
Facilitating circular food system in city region
Peri-urban food production
Nutrients recovery Residential building
According to the waste management plan of Gothenburg, Gothenburg are planning to reduce the food-waste production by 50% per inhabitant in 2030, while 20% more food waste should be sent to nutrition recovery or biogas or other equivalent purpose. In order to realize the goal of waste reducing and recycling. New system, service and facilities in the urban food waste recyclingsystem are required.
In this thesis I will explore how urban planing and design can support facilitaing circular economy in city by choosing the integration of foodwaste recycling system and future’s local food production planning ( ’Stadslandet” ). Scenario planning ,evaluation of keep performance indicators (KPIs) and geodesign methods will be applied in the project.
This map shows all of the actors related to current foodwaste recycling flow in Gothenburg. This map will be the starting point of next step flow mapping.
Food
1.Renova-Marieholm (Pre treatment) 2.Gryaab(Slurry treatment and biogas production) 3.ST1 Refinery(Biorefinery) 4.Gothenburg energy(From biogas to biofuel)
1.Gothenburg energy (district heating) 2.Renova CHP plant(heating and energy production) 3.Biofuel stations 4.Surrounding farmland
Flow type A. (from household foodwaste to energy and existing agriculture)
Flow type B. (from sewage slurry to energy and peri-urban agriculture)
Flow type C.(from industrial foodwaste to energy/peri-urban agriculture)
Flow type D. (from grazing waste to peri-urban crop production)
o a e du
C p yp （P） M a e a s p od c 1 e e b s p od c 1 o a e du 3 p yp （K） M a e a s p od c 1 e e b s p od c 2 o a e du
Optimization of urban food production flow
(Linking urban food production to foodwaste recycling system)
Community garden District greenhouse Roof-top farming in industrial area Peri-urban start up companies
New flow type A.(from household food waste to urban/ peri-urban food production and energy)
A-The first type of circular low (from household food waste to urban/peri-urban food production)
Mapping the circular steps in future's household circular food production and waste recycling system
Mapping the circular steps in the food-industrial&agriculture waste recycling
Map of actors in future's household related circular food production system
+ + + + + + + + + + + + + + + + + + + + + + + + + + < <
< Biofuel sta�on Building
Peri-urban food produc�on CHP plants < CHP Renova
New flow type B (from sewage to resources for peri urban/urban food production)
< Gryaab
STEP1 household food waste to new actors (local food production) with treatment facilities and and central treatment facility
Local food produc�on (suitable) sewage water < Gryaab
Peri-urban Agriculture CHP plants < Sewage(Sludge)
< < Biofuel sta�on
STEP3
STEP2 Local facilities for reusing greywater and from pretreatment facility to sewage plant STEP4 From CHP to biofuel station Local food produc�on Local treatment facility =
+
+
+ + + + + +
+ + + + + + + +
+
Urban circular food production flow diagram (from household food waste to resource) + New actors
+ + + + Relevant treatment facilities
+
of urban food production flow------From linear to circular (link peri urban agriculture to industrial foodwaste)
Bakery and food industry CHP(Combined heat and power) Marieholm waste recycling centre Peri-urban farmland
New flow type C: (from food industry and food markets to local/peri-urban agriculture and energy)
C.The third type of circular flow (from food industry and food markets to local/peri-urban agriculture and energy)
Mapping the circular steps in future's industrial and agriculture circular food production and waste recycling system
Mapping the circular steps in the food-industrial&agriculture waste recycling
Agriculture
STEP1 More industrial-food waste or commercial food waste to ST1 bio-refinery
STEP2 Bio-refinery to biofuel stations&africulture
New flow type D: (from residual/grazing waste to local nutrients and energy)
D.The fourth type of circular flow (from residual/grazing waste to local nutrients and energy
Grazing Field +
Peri-urban agriculture
Building local-CHP
Linking resource from grazing field to crops field; More digestion facilities
a.Renova pre-treatment b Gryaab Sewage plant c.ST1 Biorefinery d Göteborg Energi
Current user a.Peri-urban Agriculture
d Göteborg Energi
Map of actors in future's food industry and agriculture related circular food production system
Urban circular food production flow B. (from industrial foodwaste to
+ c.ST1 Biorefinery
Current user b.Biofuel sta�ons
% %
Circular food production model for community garden
Prototye (key actor) of future's community garden
Circular food production model of future's community garden
District (Parking
Suitable site for community garden (Proximity to urban green, local compost and potential runoff )
Suitable locations for community garden
Bike Tricycle Car Tractor Runoff Power flow Food waste flow Water flow Food flow Fertilizer flow Truck Walking Bus Typical area Zoom in area Suitable locations ZOOM-IN AREA
Application of the circular model
Application of the circular model on site
Circular food production model for rooftop farm Peri-urban (Greenhouse
Circular food production model at neighbourhood scale (Typical areaB: District greenhouse)
District greenhouse (Parking lot based)
Prototye (key actor) of district greenhouse
Suitable
Suitable site for parking lot based district green house
Circular food production model for district greenhouse
Circular food production model of future's district greenhouse
Peri-urban green start up companies (Greenhouse based)
Application of the circular model on site
Application of the circular model Zoom in area
Circular food production model for peri-urban green start up companies
Circular food production model at neighbourhood scale ( Typical areaC: Rooftop fish-vegetable symbiosis farm)
Fish-vegetable symbiosis farm (Roof-top based)
Prototye (key actor) of future's rooftop fish-vegetable symbiosis farm
Circular food production model of rooftop fish-vegetable symbiosis farm
Suitable locations for fish-vegetable symbiosis farm
Suitable site for rooftop fish-vegetable symbiosis farm (Rooftop of industrial building)
Application of the circular model on site
Zoom-in area
Circular food production model at neighbourhood scale
Application of the circular model
(Typical areaD: Peri-urban green start up companies and existing farm)
Peri-urban green start up companies (Greenhouse based)
Prototye of future's peri-urban green start up companies
Suitable locations for peri-urban green start up companies and existing farmland
Suitable site for peri-urban green start up companies. (Proximity to existing farm)
Circular food production model for peri-urban green start up companies
Circular food production model of peri-urban green start up companies
Typical area
Zoom-in area
Application of the circular model on site
Application of the circular model
Location of the suppoting system for the new food production actors based
Supporting system1. blue system
1.Map of groundwater reservoir and suitable soil for farming (silt)
2.Map of runoff and stream system of Gothenburg
Supporting system2. green system
1.Map of current urban green area and forest area
2.Map of functional buffer for forest patches
3.Map of potential wadi for rainwater detention
4.Map of open water surface and lakes in Gothenburg
3.Map of buffer filter for runoff/streams and green corridor along river
4.Map of buffer for lakes and wetland in Gothenburg
Location of the suppoting system for the new food production actors based on GIS analysis
1.Map of exsisting parking space for bikes and new parking space for bikes
2.Map of parking lots where farmers market and relevant facilities can be built
1.Map of water storing and purification
2.Map of smart facilities for rainwater irrigation
3.Map of existing cycling line and new cycling line
4.Map of existing walking paths and new walking paths
3.Map of (Recycling room based) food waste composting and information system
4.Map of basin for water and nutrients management
SITE: Gothenburg, Sweden
ACADEMIC: Year1,Semester1 (Msc.)
Tutor: Meta Berghauser Pont
In this project I researched the social-ecological solutions for connecting important biotopes which is cut through by highway-159 in the south part of Gothenburg. In the project I combine the design of ecological corridors, ecoduct with social benefits for people, like public open space, cycling route and urban permaculture space. Which provide different types of landscape for surrounding residents.
In the bioswale based community park, the steep slope of the existing bioswale is widened and the overgrown grass along the ditch is replaced by local meadow species, so the bioswale become more visible and approachable, also the stormwater storage capacity is improved. Existing shrubs and trees along the biowale are moved in order to provide better vista for visitors walking in the park and residents living. Meanwhile, two 1m width gravel routes linked by 3 walkable stone check-dams on the stream are built for guiding people approach the viewpoints and small playground along the bioswale in nearby houses. New local shrubs are planted in the west slope for marking and provide protection for small playgrounds in the lawn.
Over the highway159, a multifunctional ecoduct with 1:12 slope for both local target animals and local residents is planned for connecting anggardsbergen nature reserve and forest in Balltorp. Above the ecoduct, a 20M width green belt for linking ecological corridor on both sides of the highway is designed, soil type and morphology of the green belt on the ecoduct is referred from surrounding ecological corridor and patches. Also, Plants in the green belt are mainly local shrubs,herbs and meadows based on the study of species composition of the surrounding nature area. Shrubs,trunks and stone boulders are put on the green belt which function as a natural“screen”, dividing the 4M width trail for humans and the green area for animals. small infiltration ponds connected to ditches are created for attracting animals, also collecting water from the ecoduct through gentle slope.
Sports park+Floodplain remediation
Wood trail in the secondary forest
Runing/Bicycle trail along the dike
Beach&playground along the floodplain
+1. Lava Diversion (Planning Competition Project)
+2. Izmir Water Integrated Planning (Internship Work)
+3. Renovation of Hoge Riet Elmelo (Internship Work)
+4. Sponge street solution for Plantage Middenlaan (Internship Work)
I. Water integration planning of Izmir(Basin Bostanli and Poligon) GIS mapping and data analysis of Bostanli water system (Cooperated with Josje Hoefsloot) Visualization of general longlitude of the Bostanli basin
drawing based on
storage proposals in zoom-in area (My role: 1.GIS analysis of water system and existing water infrastructue 2.Section drawing of proposal in key zoom-in area)
The Bostanli catchment has an extensive hinterland of approx. 40 km2. In the upstream area, many small natural streams come together and form wider streams that run towards the city. These streams are denaturalized in downstream urban areas, where infrastructure often crosses the canals. In addition, the culverts under the bridges are relatively small, resulting in bottlenecks for water drainage during extreme weather events.
