HKU Landscape Architecture Portfolio - Baron Leung 2022

Page 13

DESIGN PROGRAMME Repellent Crop Experiment

The Establishment of Elephant Canteen

Repellent crop experiment is to find out what kind of crop will not consume by elephants and its economic value. The research found out that the experimental crops did well while the traditional crops suffered severe damage from elephant raids. Furthermore, the income from experimental annual crops was initially low. However, with the combination of perennial crops, it can provide higher income than traditional crops while also reducing the risk of elephant raids.

Elephant canteen is a way to lure elephants away from farmer’s fields by planting elephant food crops near elephant’s habitat.

Repellent Crop

Tradition Crops

Rice

Sugarcane

Sorghum

Annual Crops

Taro

(Colocasia esculenta)

Turmeric

(Cuscuma longa)

Perennial Crops

Chilli

Eggplant

(Capsicum sp.)

(Solanum sp.)

Teak

Tamarind

(Tectona grandis)

(Tamarindus indica)

Pomelo

(Citrus maxima)

Farmland area

HEC consequences

Total farmland: 171 ha Farmland per person: 0.13 ha

Human deaths & injuries: 32 deaths & 159 injuries Economic loss: $1 million damage in crops per year Elephant deaths: More than 40 Asian elephants die from electric shocks, eating poisonous

NHPA village

HEC incident

Population: 1346 Ethnic: Lao Loum Type of agriculture: Rice, corn, tea & citrus; Chicken & pig

Deforestation due to the expansion of rubber tree plantations and farmland, intensifies elephants raiding during food shortages (July to March). Farmers stop cultivating some of the farmland, due to the fear of elephants.

crops & falling into agricultural reservoirs,

Jujube

(Ziziphus mauritiana)

Tea plantation

Chicken farm

Rice field

Rubber Plantation

Corn farm

The presence of wild elephants has stopped many people from entering the forest for rubber

Before

Elephant Food Crops Survival rate: 20-80%

Survival rate: 86-93%

Survival rate: 85-90%

Mean: 50%

Mean: 89.5%

Mean: 87.5%

Expected income per 1000 m2

Expected income per 1000 m2

Expected income per 1000 m2

Rice: $ 35 Sugarcane: $ 217 Sorghum: $ 209

Taro: $ 174 Turmeric: $ 53 Chilli: $ 50 Eggplant: $ 44

Teak: $ 362 Tamarind: $ 226 Pomelo: $ 250 Jujube: $ 227

Expected income per 1000 m2

Expected income per 1000 m2

Expected income per 1000 m2

Rice: $ 17.5 Sugarcane: $ 108.5 Sorghum: $ 104.5

Taro: $ 155.5 Turmeric: $ 47.7 Chilli: $ 45 Eggplant: $ 39.6

Teak: $ 318.6 Tamarind: $ 198.8 Pomelo: $ 220 Jujube: $ 199.8

(included survival rate)

(included survival rate)

Maize

Sugarcan

Banana

Cassava

Monitoring system

Section A-A’

Elephant Canteen The elephant canteen is planted with banana trees to lure elephants away from villagers’ farmland. It reportedly reduces 50% of the HEC in this area.

(included survival rate)

Elephant Canteen (80ha)

After

Elephant Food Crops

Jujube Tree

Pomelo Tree

Turmeric

The efficacy of elephant food crops fades with time as elephants become picky and re-enter the village to eat crops like corn and sugarcane again.

The project is heavily dependent on the government since the government decides and funds all the development. The elephant canteen cannot be continued if the government stops funding.

There is 20 staff working in monitoring and early warning service. They monitor elephant movement through drones and infrared cameras. They inform villagers to take precautions when elephants get close to the village.

Repellent Crop

Taro

Elephant behaviour

The government rent farmland and hire farmers to work in the elephant canteen Rent: $32/mu Salary: $17/day (~$470/month) Insurance (personal death): $95 000 Insurance (crops): As market price

Tamarind Tree

Beacon Tower Using smoke & fire to alarm villagers when elephant enter cross the fence

Incentive to farmer

Chilli

Beehive Fence

Banana

Corn


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