1. General information
Location and description of the intervention
City or FUA
Bangkok
Region
Asia
Native title of the NBS intervention
สวนป่าเบญจกิติ
Short description of the intervention
Benchakitti Forest Park was created as the extension of the existing Benchakitti Water Park, which is located near the central business district of Bangkok, Thailand. The Forest Park is built in an old Thai Tobacco Factory area. The main concept of the park is to bring the forest into the city and support urban biodiversity while offering leisure activities for the people. The main features in this project include constructed wetlands, nature learning and exercise trails (for running and bicycling), a learning centre, an urban farming area and multipurpose open space for gathering and event activities. Benchakitti Forest Park can be divided into 2 parts. The first part is a green outdoor area including the wetlands, all trails and an outdoor amphitheatre. This first part was completed and open to the public in 2022. The second part is the renovation of buildings into museums and the creation of an urban farm and other facilities associated with the building. This second part is still under construction. (Ref. 1,2,3)
Address

Ratchadaphisek Rd, Khlong Toei
Bangkok
10110
Thailand

Area boundary
POINT (100.551883 13.733784)
POINT (100.557039 13.733806)
POINT (100.552811 13.725299)
POINT (100.557318 13.725484)
NBS area image
Source of NBS area image
Ref 5.
Total area
414400.00m²
NBS area
414400.00m²
Type of area before implementation of the NBS
Timeline of intervention
Start date of the intervention (planning process)
2020
Start date of intervention (implementation process)
2021
End date of the intervention
ongoing
Present stage of the intervention
Goals of the intervention
The project aimed to introduce an urban forest park concept that promotes ecological biodiversity in an urban area with minimum maintenance as well as to offer various activities to different groups of people. To realize the urban forest concept, several strategies were planned to be used, including keeping existing trees, planting new trees, constructing wetlands and ponds, and creating eco canals, bioswales and community space for people. (Ref 1,2,3) The specific project objectives include (Ref. 1,2,3) :
1. Creating new green public spaces that hold various values and benefits for all humans and other living organisms in the urban area.
2. Managing surface water and mitigating floods in the area during heavy rain periods.
3. Promoting sustainable construction and design.
4. Supporting agroforestry and providing an opportunity for citizens for farming activities.
5. Creating various opportunities for recreation, social interaction and learning, providing universal access to all visitors.
6. Transforming a former industrial area into an urban park and turning the main buildings into museums.
Quantitative targets
1. Planting more than 7,000 new trees. (Ref. 2)
2. Renovating 4 existing buildings that used to be part of the Thai Tobacco Factory due to their architectural value. (Ref. 1)
Monitoring indicators defined
1. Number of existing trees being conserved.
2. Number of new trees and vegetations being planted and the diversity of native species.
3. The amount of water that can be retained in the area.
(Ref. 1,2,3)
Habitats and biodiversity conservation: What types of conservation goals are / were defined for the NBS intervention?
What types of restoration goals are / were defined for the NBS intervention?
What activities are implemented to realize the restoration goals and targets?
Implementation activities
The Benchakitti Forest Park can be divided into 3 main parts (Ref. 1,2,3):
Natural areas include:
1. 1,733 existing trees have been saved, which is less than expected. This is due to the condition of the trees that are unhealthy, which links to safety issues.
2. 7,155 new trees and other types of vegetation of more than 300 species, all native to Thailand, have been introduced.
3. 4 constructed wetlands and ponds that can hold up to 128,000 Lb.m. of water. The wetland also helps filter surface runoff and water from nearby canal that has been diverted into the park. The water collected has been used to water the planting within the park. The wetland has been designed with small islands to help improve oxygen levels in the soil, as the soil used in this project mainly comes from the compacted ground under existing buildings.
4. Eco canal and bioswale
5. An agroforest garden for urban farming to produce food for the city people in the canal area

Path for learning, leisure and exercise (Ref. 2):
1. 5.8km. of the natural trails for learning and strolling
2. 2.8km. of running trail
3. 3.4km of bike trail

4 existing buildings were renovated into (Ref. 1,2)
1. Museum
2. Indoor sports facilities
3. Urban farming space serving as an educational area, showcasing over 300 native species
4. Event and multi-purpose space with amphitheatre that can hold up to 15,000 people

Other activities that support the sustainable design and construction goal:
1. With careful management of the cut and fill technique, this project use only existing soil to construct the park (no new soil being introduced and no existing soil being wasted). (Ref. 1)
2. Reuse the brick from the demolition of exiting buildings to construct certain structures such as water system and pathway within the project. (Ref. 2)
NBS domain and interventions
Ecological domain(s) where the NBS intervention(s) is/are implemented
Blue infrastructure
In-land wetlands, peatlands, swamps, and moors
Community gardens and allotments
Community gardens
Green areas for water management
Swales and filter strips
Parks and urban forests
Large urban parks or forests
Please specify the number of plots or allotment gardens
Unknown
What is the level of innovation / development of the NBS related to water management?
Vegetation Type
Please specify how many trees were planted
7,155 new trees and other types of vegetations were planted. (Ref. 1,2,3)
Services
Expected ecosystem services delivered
Provisioning services
Food for human consumption (crops, vegetables)
Water (surface and ground water for drinking and non-drinking purposes)
Regulating services
Flood regulation
Water purification / filtration
Habitat and supporting services
Habitats for species
Cultural services
Recreation
Intellectual interactions (scientific and / or educational)
Physical and experiential interactions with plants and animals
Social and community interactions
Scale
Spatial scale
Micro-scale: District/neighbourhood level
Beneficiaries
Governance
Governance arrangements
Please specify the roles of the specific government and non-government actor groups involved in the initiative
The Treasury Department, under the Ministry of Finance, is the land owner and is mainly responsible for project delivery (as project owner). The Thai Tobacco Authority is the main founder of the project. The Royal Thai Army is the constructor, and the Arsomsilp Community and Environmental Architect are responsible for all main architecture and landscape architecture design and planning. After the project was completed, the park was handed over to Bangkok Metropolitan Administration(BMA). (Ref. 4)
Key actors - initiating organization
Land owners
Key actors - Other stakeholders involved (besides initiating actors)
National government
Local government/municipality
Public sector institution
Private sector/corporate actor/company
Participatory methods/forms of community involvement used
Please specify other landowner
The Treasury Department, under the Ministry of Finance
Policy drivers
NBS intervention implemented in response to an Regional Directive/Strategy
No
NBS intervention implemented in response to a national regulations/strategy/plan
Unknown
NBS intervention implemented in response to a local regulation/strategy/plan
Unknown
Mandatory or voluntary intervention
Unknown
Enablers
Presence of specific city-level GI/NBS vision/strategy/plan - mentioned in connection to the project
Unknown
Presence of specific city-level GI/NBS section/part in a more general plan - mentioned in connection to the project
Unknown
Presence of city network or regional partnerships focused on NBS - mentioned in connection to the project
Unknown
Presence of GI / NBS research project - mentioned in connection to the project
Unknown
Subsidies/investment for GI / NBS in the city - mentioned in connection to the project
No
Co-finance for NBS
Yes
Co-financing governance arrangements
Unknown
Was this co-governance arrangement already in place, or was it set up specifically for this NBS?
Financing
What is/was the Cost/Budget (EUR) of the NBS or green infrastructure elements?
Unknown
What are the total amount of expected annual maintenance costs?
Unknown
What is the expected annual maintenance costs of the NBS or GI elements?
Unknown
Please specify cost savings
Unknown
Please specify total cost (EUR)
670,000,000 baht (18,495,172 EUR)
Source(s) of funding
Non-financial contribution
Yes
Type of non-financial contribution
Who provided the non-financial contribution?
Which of the involved actors was motivated by this model?
Please specify technological innovation
The project has been designed to have 85% forest area and wetlands area resulting in an ecological forest park, a complete and self-sustaining urban forest ecosystem. (Ref 1-4)
To realize the urban forest concept, several strategies were used, including keeping existing trees, planting new trees, constructing wetlands and ponds, and creating eco canals and bioswales. The construction of the wetlands and the ponds supports flood mitigation, and the water collected is used to water the park in the rainy season. (Ref 1,2)
Please specify social innovation
The project offers various community spaces for recreation, social interaction and learning. It was developed with universality in mind, providing access to everyone to various recreational opportunities (walking paths, jogging paths, bicycle paths, skywalks and nature trails). (Ref 1-4)
Please specify novelty level of the innovation
"In Thailand, public spaces in the form of forest gardens may be new and unfamiliar, but many places abroad have begun to build green spaces like this, such as the Hongkong wetland park from Hong Kong Floating Garden from China. The London Wetland Center from London all share a similar concept and design approach, aiming to bring the wilderness back into the city increase biodiversity and ecosystems, to create a space that supports humans and nature and create a large green area that returns to benefit all city residents." (Ref 3). The designers of the park adapted the concept to the local climate, the environmental challenges of the area as well as the community needs in the surrounding areas.
Replicability/Transferability
Please specify Replicability/Transferability
The architectures of the park outlined the transferability of the park concept, but the initiative is not referred to as being transferred: "We hope that this park will be an inspiration for children, the new generation or the general public so that it can lead to other parks in the future, where the benefits of the city's green space will bring to the quality of life of people". (Ref 2)
Impacts, benefits
Description of environmental benefits
Water management:
The center grass area serves as an area for holding water during the rainy season from surrounding areas of the park. (Ref 1) The park acts as a sponge for water to reduce the water level elsewhere. (Ref 2) In the dry season, the wetlands produce moisture for the garden, oxygen, and food for people and birds. (Ref 2) The gardens are also used for wastewater treatment according to royal initiatives and treat water naturally for use in the garden. (Ref 2) The wetland areas act as reservoirs in the city, they can be used for water retention when there is heavy rain or a flood (Ref 3).
The park connects all water systems to collect water, use water, and store it during the rainy season. Thus the garden becomes a complete ecosystem and thus, maintenance efforts are reduced (Ref 2) When the original ecosystem returns the city people will receive a good environment, less dust, pollution, and reduced risks of floods and disasters (Ref 3).

Environmental quality (improved soil and air quality):
The original soil in the area is brought back to use. There is no removal of the original soil or the soil from the outside area to be re-inserted. (Ref 3).

Green space and habitat:
"We hope that this park will be an inspiration for children, the new generation or the general public so that it can lead to other parks in the future, where the benefits of the city's green space will bring to the quality of life of people". (Ref 2)
The garden draws wilderness into the city, and 300 native species are present in the area of Bangkok. (Ref 2,3)
There are also parts of the forest that are intended to be preserved for birds and other animals (Ref 3)
Description of economic benefits
To help the neighbouring areas the project also aims to develop the surrounding area and offer urban farming opportunities for the residents of the canal (Ref 3).
By creating an urban forest-water ecosystem, the park becomes self-sustainable with very little maintenance needs (Ref 1,2)
Description of social and cultural benefits
Social cohesion:
The park includes areas for walking, running and cycling (Ref 1) There is also a pavilion that is both a place to sit and do activities and a viewpoint that can walk up to the roof as well (Ref 1)
A skywalk was created to let people see the ecosystem of the garden and allow access to the garden during the rainy season and a large amphitheatre and lawns were built to accommodating a large number of people to organize events in various festivals (Ref 1)
For every area in the garden, the designers used the principles of Universal Design as an important element in the design, including handrails, walkways, risers, stair treads, ramps, and bathrooms for all groups of people in society to be able to use the space equally (Ref 1)

Health and well-being:
The garden meets the needs of many forms of use (Ref 1) "It is divided into 5.8 km. of walking paths in nature, 2.8 km. of running paths, and 3.4 km. of cycling paths. Tobacco warehouses and tobacco factories were renovated into indoor sports halls and museum buildings that can accommodate up to 3,000 people. Demonstration fields and amphitheaters can accommodate over 15,000 people, all of which are commercial developments." (Ref 2)

Cultural heritage and education:
The architect team chose to plant more than 3,000 trees from 300 species that are native plants of Bangkok, and the garden also serves as a learning center for traditional local plants for interested city dwellers and it includes nature trails across the park (Ref 3,4).
Type of reported impacts
Indicators
Unknown
Analysis of specific impact categories
Job creation: The NBS created ...
Environmental justice: The implementation of the NBS project resulted in ...
Negative impacts: Did the project cause any problems or concerns?
No information was found regarding negative impacts of the project
Methods of impact monitoring
Process of recording NBS impacts
Methods used to evaluate the impacts of NBS
Evidence for use of assessment
Presence of an assessment, evaluation and/or monitoring process
Unknown
Presence of indicators used in reporting
No evidence in public records
Presence of monitoring/evaluation reports
No evidence in public records
Availability of a web-based monitoring tool
No evidence in public records
Impact assessment mechanism
Name of any specific impact assessment tools
Unknown
Use of GIS in mapping impacts
No evidence in public records
Citizen involvement
Citizens involvement in assessment/evaluation
Unknown
Citizens involvement in the analysis of the assessment/evaluation
Unknown
Follow-up to the evaluation / assessment
Unknown
References
List of references
1. Design something (2022), สวนป่าเบญจกิติ และการสร้างความสัมพันธ์ระหว่าง คน สัตว์ น้ำ ป่า, Available at https://dsignsomething.com/2022/03/29/benjakitti-park/ (Accessed 24-01-2023)
2. The Cloud (2022), Wetland, Available at https://readthecloud.co/benchakitti-park/ (Accessed 24-01-2023)
3. Citycracker (2022), เรียนรู้และเข้าใจระบบนิเวศของสวนป่า ผ่าน ‘สวนป่าเบญจกิติ’ พื้นที่สาธารณะรูปแบบใหม่ใจกลางกรุง, Available at https://citycracker.co/city-environment/benjakitti-park-phase-2-3/ (Accessed 24-01-2023)
4. Bangkokbiz (2021), นายกฯร่วมส่งมอบสวนป่า “เบญจกิติ”ระหว่างกองทัพบก​ ธนารักษ์​และกรุงเทพ, Available at https://www.bangkokbiznews.com/news/977775 (Accessed 25-01-2023)
5. Arsomsilp Architect (2022), Benchakitti Park, Available at https://arsomsilparchitect.co.th/project/benchakitti-park/ (Accessed 25-01-2023)
Comments and notes
Additional insights
Benchakitti Park consists of 2 main zones. First zone is the 'Benchakitti water park' which includes the massive pond and the pathway around it, located on the right side of the plan(refer to Benchakitti Park Plan image). This zone covers around 208,000sq.m. or 130rai and the construction was completed in 1992. Second zone is Benchakitti Forest Park which is the area on the left side of the park. This zone is 414,400sq.m. or 259rai. (Ref. 2)

Within Benchakitti Forest Park, it can be divided into 2 parts. The first part is the green outdoor area including the wetland, all trails and outdoor amphitheater. This first part is completed and open to public in 2022. The second part is the renovation of buildings into museums, urban farm and other facilities that associated with building. This second part is still under construction.
Public Images
Image
Benchakitti Park
Benchakitti Park
Source: Ref. 1
Image
Benchakitti Park Plan
Benchakitti Park Plan
Source: Ref. 5
Image
Benchakitti Park Wetland
Benchakitti Park Wetland
Source: Ref. 3
Image
Benchakitti park running trail with bioswale
Benchakitti park running trail with bioswale
Source: Ref. 2