1. General information
Location and description of the intervention
City or FUA
Gopalganj
Region
Asia
Native title of the NBS intervention
ভাসমান সবজি চাষ
Short description of the intervention
Bangladesh is a country prone to floods and waterlogging, which results in two-thirds of this nation's land being transformed into wetlands each year. As such, much land becomes unavailable and the restricted access to it causes food insecurity as well as severe environmental pressure on the flora, fauna and ecosystems. The impact is even more serious as agriculture is one of the most important contributors to Bangladesh's GDP (1).
To respond to most of the climate challenges and food insecurities, in 2007 the International Union for Conservation of Nature (IUCN) and the humanitarian agency Care International, alongside other partners (including the Bangladeshi government), launched floating gardening (artificial islands, that simply rise and fall with the swelling waters) pilot project in the peri-urban area of the Gopalganj and other close by districts (1,2).
Floating gardens known locally as Baira are an old practice of crop cultivation in the wetlands of Bangladesh, the previous agricultural land, which got destroyed by the floods. The practice consists of piling together a number of dense layers of aquatic weeds like water hyacinth, duckweed, or paddy stubs and letting them decay. Afterwards, they're combined with silt and cow dung and inserted with plant/vegetable seeds left to flourish. On these beds, farmers cultivate fruits and vegetables like turmeric and ginger as well as okra, bitter gourd, snake gourd, spinach, and brinjal. In addition to veggies, rice seedlings can occasionally be raised. As a result, floating gardens are available to everyone, affordable, dependable, and completely in harmony with nature. (2,3) Furthermore, this aquatic farming practice has been shown to be highly effective in tackling the consequences of climatic variability and climate change like prolonged water-logging (3). The intervention has benefited approx. 2,000 families in the district of Gopalganj and it has opened the route for further projects that supported the practice of floating gardens (4).
Address

Gopalganj - 8102
Bangladesh

Type of area before implementation of the NBS
Timeline of intervention
Start date of the intervention (planning process)
unknown
Start date of intervention (implementation process)
2007
End date of the intervention
2015
Present stage of the intervention
Goals of the intervention
The goals of the project were defined below:
1. To strengthen climate change adaptation by invoking a local technique of hydroponics that is an eco-friendly farm practice thus helping in conserving indigenous knowledge and extending water stagnancy (2,3).
2. To respond effectively to climate change challenges such as flooding and waterlogging with innovative solutions that increase the quality of food production influencing therefore the health of local communities (2).
3. To reduce pollution from chemical fertilizers using platform residues as organic fertilizer (3).
4. To protect the ecosystem by controlling invasive species like water hyacinth and introducing it in the construction of these ingenious structures, because of their resistance to salt water, buoyancy and abundance. "These reduce the risks of mosquito breeding, and soil-borne diseases.” (1)
Quantitative targets
- To address a population of approx. 30,000 people as of 2009
- To train and involve approx. 2,000 families
- To include 11 villages in the peri-urban area of Gopalganj
- To utilize 50 to 60 per cent less amount of water hyacinth
- For farmers to earn an average profit of $140 per 100 square meter
- To produce a hybrid cucumber yield of about 45 to 50 tonnes per ha. (1,2,3,4,5)
Monitoring indicators defined
1. Number of people benefiting from the action
2. Number of families trained
3. Amount of income/sqm (1,2,3,4,5)
Climate change adaptation: What were the goals of the NBS?
Habitats and biodiversity conservation: What types of conservation goals are / were defined for the NBS intervention?
Please specify "other Type of NBS project"
Implementation activities
In 2007, IUCN & the the humanitarian agency Care International introduced floating gardening in the Gopalganj district. Until 2009, they widely promoted this technology in around 100 villages as a means of improving the nutritional status of extreme poor families, particularly during the difficult monsoon season. These agencies are still promoting floating gardening in several other districts of Bangladesh. Before the project started the implementer initiated a Participatory Rural Appraisal to establish the baseline of the natural resources (1, 3).
The practice is the following: "The farmers gather weeds like water hyacinth or paddy stalks, and place them on stagnant water, beating them into shape and making rafts. Creating garden beds out of the water hyacinth is a way of controlling it. "Another advantage of these gardens is that invasive species like water hyacinth actually become beneficial, in constructing these ingenious structures, because of their resistance to salt water, buoyancy and abundance, "(1). But studies showed that there can be a reduction in its usage by experimenting with different Floating Bed cum Trellis (FBT) technology, which basically is floating garden practices for cultivating cucurbits or different types of creeper vegetable crops. The project is using both the water hyacinth technique and the new one during the action but had a target of using fewer hyacinths (4). They plant seedlings on these organic beds and place them in flooded parts of the villages. Farmers grow vegetables like okra, bitter gourd, snake gourd, spinach and brinjal on these beds, and sometimes spices like turmeric and ginger. Besides vegetables, rice seedlings, bananas, guava, coconuts, and mangoes can sometimes be grown" (1,2). Both men and women work to make these organic floating beds, which last for around five to six months. A typical floating bed is about 20ft (6m) long, but it can be as long as 180ft (55m) and provides enough food for the farmer and their family, and a source of income when the surplus is sold (1). As a success of the initiative starting in 2013, the government of Bangladesh approved a $1.6m (£1.2m) project to promote floating farms for climate change adaptation (1). The project continued until 2015 (5,8).
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
Horticulture
Please specify the number of plots or allotment gardens
Unknown
Vegetation Type
Amenities offered by the NBS
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
Habitat and supporting services
Habitats for species
Pest and disease control
Scale
Spatial scale
Meso-scale: Regional, metropolitan and urban level
Beneficiaries
Governance
Non-government actors
Non-governmental organisation (NGO) / Civil society / Churches
Coalition with multiple of the above
Please specify the roles of the specific government and non-government actor groups involved in the initiative
The initiative was initiated by IUCN Bangladesh alongside the humanitarian agency Care International. Both organizations were initiators and implementers and funding was provided under the USAID-funded SHOUHARDO programme and the Bangladeshi government. (6)
Land owners
Key actors - Other stakeholders involved (besides initiating actors)
National government
Non-government organisation/civil society
Citizens or community group
Multilateral organisation
Please specify other landowner
Low-lying delta farmlands owned by the farmers (2)
Policy drivers
NBS intervention implemented in response to an Regional Directive/Strategy
No
NBS intervention implemented in response to a national regulations/strategy/plan
Yes
Please specify the national regulations/strategy/plan
The National Adaptation Programme of Action (NAPA, 2005) of Bangladesh identified the promotion of floating gardening as one of its 15 adaptation projects. The revised NAPA (2009) also recognised the potential of this traditional practice (2,3). Bangladesh's climate documents picked up floating farming—the National Adaptation Programme of Action (NAPA, 2005, updated in 2009) and the second (2012) and third (2018) national communications submitted to the United Nations Framework Convention on Climate Change (UNFCCC) sufficiently discussed this agro-practice. (6)
NBS intervention implemented in response to a local regulation/strategy/plan
Unknown
Mandatory or voluntary intervention
Voluntary (spontaneous)
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
No
Presence of city network or regional partnerships focused on NBS - mentioned in connection to the project
No
Presence of GI / NBS research project - mentioned in connection to the project
No
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)
The initiative was funded through USAID and its programme, the SHOUHARDO programme developed in 2 stages from 2005-2015. The first stage was funded by USAID, with a 10 per cent contribution from the Government of Bangladesh (GoB), and cost $126 million USD -120 mil EUR. The second stage is also funded by USAID, the GoB, and CARE USA for a budget of $129 million USD- 122 mil. EUR (8). These were overall costs as no split costs were accessible to understand how much was spent specifically on Gopalganj.
Non-financial contribution
Yes
Type of non-financial contribution
Business models
Which of the involved actors was motivated by this model?
Please specify technological innovation
The initiative proved to be a process innovation as it put forward a hydroponic farming technique that included innovative cultivation methods and seeds customised for the climate and location that ensured higher crop yields. (2)
Please specify social innovation
The project is innovative from a governance point of view as there is a community consultation process involved and done at the initial stage of enrolling communities in the actions. The process is developed using a participatory approach in which community members sit together and identify their needs and pathways for action. As the entire process is designed to be participatory, it creates a sense of ownership among the participants. (8)
Please specify novelty level of the innovation
This kind of soil-free cultivation also exists in different parts of the world, such as Dal Lake in Kashmir and Inle Lake in Myanmar, where people have adapted to living on the water. (1)
Please specify Replicability/Transferability
It was mentioned that similar projects were developed in the North Char, Mid Char, Haor belt, and the Cox’s Bazaar coastal area, covering 11 districts, 30 Upazilas, and 172 unions. (8)
Impacts, benefits
Description of environmental benefits
- Strenghten capacity to address climate hazards: It is expected that the intervention will provide better tools to address flooding events as they were being detrimental to the food security of the Bangladeshi population of Gopalganj. It was also mentioned that the material used could resist prolonged waterlogging. ( 3, 4)
- Increase in water quality: It is expected that the intervention will provide benefits for water quality but these were not reported. (2,3)
- Increase in biodiversity: it is reported that usage of this particular hydroponic technique increases fish populations and aquatic biodiversity (provides habitats for varied marine/terrestrial species) but no other information was provided. (5)
- Improved prevention of invasive species: invasive species like water hyacinths actually become beneficial, in constructing these ingenious structures, because of their resistance to salt water, buoyancy and abundance. Through this project, the hyacinths population were reduced. (1)
Description of economic benefits
- Due to the low cost of making the gardens they become a realistic option for many farmers. The average cost of a floating bed is around 8,000 Bangladeshi taka ($94/£73), making food production possible throughout the year and providing food security even during the monsoons. According to an FAO report, the farmers earn an average profit of $140 per 100 square metres (£107/1,070 sq ft) of floating bed during the monsoon season. (1)
- The productivity of floating vegetable cultivation is estimated ten times higher than that of similar-sized land-based cultivation. Given that it allows better control over crops, some researchers have noted greater productivity of floating bed practices compared with traditional land-based agriculture. (4)
Description of social and cultural benefits
- Increased visibility for marginalized groups: Floating gardens appeal and were designed having in mind the destitute populations of local farmers in the Gopalganj district. Floating gardens contribute to food security by nutrient intake growing vegetables and alleviating the financial burden for many marginalized groups (1).
- Recogniztion of cultural heritage: The UN’s Food and Agricultural Organization declared Bangladesh’s floating gardens to be a globally important agricultural heritage system in December 2015. (1)
Type of reported impacts
Indicators
- Increased income of the farmers
- Decreased water-logged areas
- Number of beneficiaries
- Amount of production (1)
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
COVID-19 pandemic
As the intervention was implemented between 2007-2015 it was not influenced by the pandemic.
Methods of impact monitoring
Evidence for use of assessment
Presence of an assessment, evaluation and/or monitoring process
Yes
Presence of indicators used in reporting
Yes
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
Yes
Mode(s) of citizen involvement in evaluation/assessment
Citizens involvement in the analysis of the assessment/evaluation
Unknown
Follow-up to the evaluation / assessment
Unknown
References
List of references
1. Kalpana S. (2020) In the lowlands of Bangladesh, people are turning to a centuries-old form of hydroponics to keep afloat. available at https://www.bbc.com/future/article/20200910-the-remarkable-floating-gardens-of-bangladesh (Accessed on 21 February 2023).
2. Irfanullah, Haseed Md. ; Ahmed, Rashiduzzaman, ed. ; Nishat, Ainun, ed.
IUCN Bangladesh ; Sustainable Environment Management Programme (SEMP) ; UNDP ; Bangladesh, Ministry of Environment and Forest, available at https://portals.iucn.org/library/efiles/documents/2005-090.pdf (Accessed March 8 2023)
3. IUCN, (2009), Biodiversity conservation and response to climate variability at community level, available at https://portals.iucn.org/library/sites/library/files/documents/2009-055.pdf (Accessed March 8, 2023)
4. FAO (2017), Improvements of traditional floating gardens for vegetable production, available at https://teca.apps.fao.org/teca/pt/technologies/8868 (Accessed March 8, 2023)
5. Dr. Haseeb Md. Irfanullah IUCN Bangladesh (2018) Floating Gardening:
Bangladesh Story, available at https://www.researchgate.net/publication/327890574_Floating_Gardening_Bangladesh_Story/link/5bab880aa6fdccd3cb73d023/download (Accessed March 8, 2023)
6. GCA (2019), These farmers in Bangladesh are floating their crops to adapt to climate change, available at https://gca.org/these-farmers-in-bangladesh-are-floating-their-crops-to-adapt-to-climate-change/ (Accessed March 8, 2023)
7. The Daily Star (2021), What will the next phase of floating agriculture look like?, available at https://www.thedailystar.net/views/opinion/news/what-will-the-next-phase-floating-agriculture-look-2140951 (Accessed March 8, 2021)
8. USAID (2015), SHOUHARDO:A Holistic Approach Ensuring Food Security through Women’s Empowerment, available at https://usaidlearninglab.org/sites/default/files/resource/files/cla_case_competition_casestory_23_care_shouhardo2_bangladesh_final.pdf (Accessed March 8, 2021)
Comments and notes
Public Images
Image
Floating gardens
Floating gardens
Source: (Ref 6)
Image
Floating gardens
Floating gardens
Source: (Ref 2)
Image
Floating garden
Floating garden
https://gca.org/these-farmers-in-bangladesh-are-floating-their-crops-to-adapt-to-climate-change/
Image
Growing vegetables
Growing vegetables
https://www.thedailystar.net/views/opinion/news/what-will-the-next-phase-floating-agriculture-look-2140951#lg=1&slide=0