1.2 参与该技术评估和文件编制的资源人员和机构的联系方式

有助于对技术进行记录/评估的项目名称（如相关）

Book project: where people and their land are safer - A Compendium of Good Practices in Disaster Risk Reduction (DRR) (where people and their land are safer)

有助于对技术进行记录/评估的机构名称（如相关）

HELVETAS (Swiss Intercooperation)

1.3 关于使用通过WOCAT记录的数据的条件

（现场）数据是什么时候汇编的？:

05/10/2016

编制者和关键资源人员接受有关使用通过WOCAT记录数据的条件。:

是

1.4 所述技术的可持续性声明

这里所描述的技术在土地退化方面是否存在问题，导致无法被认为是一种可持续的土地管理技术？:

否

注释:

Context specific environmentally friendly technology

2.1 技术简介

技术定义:

Floating Garden is a traditional technology, practiced in the southern parts of Bangladesh locally called “Baira” or “Dhap”. The technology allows producing crops, vegetables and seedlings in areas where farming land is scarce and where the land is flodded or water logged for more than six months in a year.

2.2 技术的详细说明

说明:

Floating gardensa are a traditional practice in south central districts of Bangladesh since long time, and has been promoted by government extension agency and development organizations in different parts of the country with technical improvements. With this technology, crops (mainly vegetables) are cultivated on floating garden beds in areas where the land inundated for more than six months in a year.
Establishment:
The basic input and main raw material to prepare the floating garden bed are water hyacinths (Eichhornia crassipes). In some cases bamboo sticks are also used to make the floating beds more resistant. The floating gardens are of different size, with a standard size per bed during preparation of 1.5 - 1.8 meter wide, 10 -11 meter long and 1 - 1.3 meter above water level. However, considering local context- such as wave action, size of water body, presence of a wetland - the bed size may vary, also depending on whether compost is added on the top. The establishment of the floating gardens are very cheap in terms of raw material and require mainly human manual labour for its establishment, without material costs for maintenance.
The garden can be used for two purposes: for vegetable production and for vegetable seedling production.
In water logged areas (where water remains for the whole year) floating beds are mainly used for vegetable production. Almost any type of vegetables can be grown in the floating bed. Production of leafy vegetables proofed to be most profitable. In addition, all types of vegetable seedlings and rice seedlings can produced in floating garden based on demand. In other areas, which are only inundated temporarily, floating garden can be used for both vegetable and seedling production. In this second case seedlings can be transfered from the garden to the fields on the main land immediately after receding of the water. This practice can save 2 to 3 weeks time of vegetable or rice production in winter season. This is a crucial advantage considering the trend to shorter growing periods due to unpredictable early spring rains.
A key advantage of floating gardening is the fact that heavy rainfalls usually do not have any negative effect on culture of the floating gardens, which are a highly effective and beneficial risk reduction and climate change mitigation technology. Floating gardens can further contribute to food security and improved nutrition for poor households, and it is a source for additional income by making use of cheap and abundant local input resources. Different NGOs improved and promoted this technology in north-west and north-east parts of Bangladesh since 2000. Since 2011 also the public agricultural extension agencies promote this technology.
As an overall goal this technology aims at protecting people’s assets for agricultural production from damages due to seasonal floods and provide options for alternative income resources. The floating garden technology is designed as measure to protect effectively from yearly floods. It might not be robust enough for extreme events with heavy storms and waves. Smaller repairing can be done by the owners themselves. In case of major damages the beds can be replaced by new ones, since the investment costs are very low. In the shallow areas the floating beds may become ordinary garden beds or fields during dry season.

2.3 技术照片

2.4 技术视频

2.5 已应用该技术的、本评估所涵盖的国家/地区/地点

2.6 实施日期

如果不知道确切的年份，请说明大概的日期:

• 不到10年前（最近）

2.7 技术介绍

详细说明该技术是如何引入的:

• 通过项目/外部干预

注释（项目类型等）:

The technology was first piloted through implementation of “Livelihoods, Empowerment and Agroforestry (LEAF)” project. Later on, the technology was expanded through implementation of “Agricultural Innovation for Eliminating Extreme Poverty” (AIEEP 2009-2012) and through Unnoti -Prosperity in Haor project (2013-2016).

3.1 该技术的主要目的

• 改良生产
• 降低灾害风险
• 适应气候变化/极端天气及其影响
• 创造有益的经济影响
• 创造有益的社会影响

• improve household food security / nutrition

3.2 应用该技术的当前土地利用类型

如果由于技术的实施而导致土地用途发生变化，则在技术实施前说明土地利的用途。:

earlier these wetland areas were mainly fallow (not used for any productive purpose). During monsoon season, the waterbodies naturally count on fish reserves, which are captures by local farmers including landless poor. Water hyacinth of these wetlands were partially used as fodder, though most of it was decomposed naturally without use.

3.3 有关土地利用的更多信息

其它（比如洪水后）:

• post-flooding

注释:

Floating gardens are prepared on the water body, hence can absorb sufficient water without additional irrigation.

每年的生长季节数:

• 2

具体说明:

Winter and early Summer

3.4 该技术所属的SLM组

• 改良的地面/植被覆盖
• 湿地保护/管理
• 家庭花园

3.5 技术传播

具体说明该技术的分布:

• 适用于特定场所/集中在较小区域

3.6 包含该技术的可持续土地管理措施

注释:

floating beds, which are adapted to changing water levels (floods).
change of land/water management from pure wetlands to gardens.

3.7 该技术强调的主要土地退化类型

注释:

More frequent and severe seasonal floodings

3.8 防止、减少或恢复土地退化

具体数量名该技术与土地退化有关的目标:

• 减少土地退化
• 适应土地退化

注释:

The technology is used to adapt to natural seasonal flooding, to prevent damages caused by floods by using wet lands for crop production.

4.1 该技术的技术图纸

4.2 技术规范/技术图纸说明

• Dimensions: The floating beds are of different size. Standard size at the time of preparation 1.5 - 1.8 meter wide, 10-11 meter long and 1.0-1.3 meter height.
• Floating beds should not cover more than 30% area of the respective water body (wetland area) in order to keep enabling environment for other aquatic resources (e.g. fishes).
• Construction material used: The basic and main ingredient/material for the preparation of the floating garden are water hyacinths (Eichhornia crassipes). In some cases, bamboo sticks are also used to increase its resistance. If available, composts may be applied on the top of floating beds, though not compulsory.

4.3 有关投入和成本计算的一般信息

具体说明成本和投入是如何计算的:

• 每个技术区域

其它/国家货币（具体说明）:

BDT

4.4 技术建立活动

	活动	措施类型	时间
1.	Bed preparation (by hired labour)	结构性的	August-September
2.	Seeding, care and maintenance, harvesting	农业学的	September-March

注释:

After full harvesting of vegetable in March, the bed (decomposed water hyacinth) can be used as organic compost for other crops in cultivable land.

4.5 技术建立所需要的费用和投入

	对投入进行具体说明	单位	数量	单位成本	每项投入的总成本	土地使用者承担的成本%
劳动力	Hired labour cost for bed establishment	persons day	10.0	300.0	3000.0
劳动力	Bed management cost (seeing, care, harvest ect.)	persons day	90.0	300.0	27000.0	100.0
植物材料	Seeds per year	kg	25.0	100.0	2500.0	100.0
施工材料	Bamboo	bamboo quantity	2.0	100.0	200.0
施工材料	Rope and lubricants	lumpsum	1.0	250.0	250.0
技术建立所需总成本					32950.0

4.6 维护/经常性活动

注释:

No maintenance required

4.7 维护/经常性活动所需要的费用和投入（每年）

注释:

No specific maintenance costs during the year/season required. Small repairments are part of the labour costs of agronomic mesures to be done in paralele with care work.

4.8 影响成本的最重要因素

描述影响成本的最决定性因素:

In case the inputs, mainly water hyacinths, are not available at the selected sites, this increases the material and/or labour costs for hyacinths to be transported from distant locations.
All indicated costs refer to yearly costs, since the beds ususally have to be restablished every year.

5.1 气候

5.2 地形

说明该技术是否专门应用于:

• 凹陷情况

5.3 土壤

如有可能，附上完整的土壤描述或具体说明可用的信息，例如土壤类型、土壤酸碱度、阳离子交换能力、氮、盐度等。:

Not applicable for this technology as floating bed prepare on surface of water body

5.4 水资源可用性和质量

水的盐度有问题吗？:

否

该区域正在发生洪水吗？:

是

规律性:

频繁

关于水质和水量的注释和进一步规范:

Each year seasonal monsoon flooding. However, early flash (pre monsoon flood) occur only every 3 years.

5.5 生物多样性

关于生物多样性的注释和进一步规范:

Water bodies are rich with diverse aquatic organisms

5.6 应用该技术的土地使用者的特征

5.7 应用该技术的土地使用者拥有或租用的平均土地面积

5.8 土地所有权、土地使用权和水使用权

用水权:

• 自由进入（无组织）
• 个人

注释:

The farmers establish floating gardens in public water body and in private water body (with verbal agreement of water body owners).

5.9 进入服务和基础设施的通道

6.1 该技术的现场影响

社会经济效应

生产

收入和成本

社会文化影响

生态影响

生物多样性:植被、动物

减少气候和灾害风险

6.2 该技术的场外影响已经显现

有关影响评估的意见:

No specific research have been made on off-site and environmental impact of the floating garden technology.

6.3 技术对渐变气候以及与气候相关的极端情况/灾害的暴露和敏感性（土地使用者认为的极端情况/灾害）

气候有关的极端情况（灾害）

水文灾害

	该技术是如何应对的？
比较和缓的（河道）洪水	好
山洪暴发	非常好

其他与气候有关的极端情况（灾害）

其它（具体说明）	该技术是如何应对的？
increasingly unpredictable start and duration of monsoon/rainy season, floods	适度

其他气候相关的后果

其他气候相关的后果

	该技术是如何应对的？
延长生长期	好

注释:

with the effect of climate change monsoon have become more impredictable: starting sooner, ending later.
The techology allows to plant and grow seedlings already before the end of rainy season, and can therefor mantain or even extend the growing period.

6.4 成本效益分析

技术收益与技术建立成本相比如何（从土地使用者的角度看）？

技术收益与技术维护成本/经常性成本相比如何（从土地使用者的角度看）？

注释:

Considering only one season - particualrly for intensive raining seasons - the gardens have positive benefits.
Considering a longer time period with less intensive rainy seasons, the fact that the bed ususally have to be reestablished every year might require an important work from a land user's perspective (therefore rate with slightly less benefits)

6.5 技术采用

• 1-10%

如若可行，进行量化（住户数量和/或覆盖面积）:

about 1000

在所有采用这项技术的人当中，有多少人是自发地采用该技术，即未获得任何物质奖励/付款？:

• 10-50%

6.6 适应

最近是否对该技术进行了修改以适应不断变化的条件？:

否

6.7 该技术的优点/长处/机会

土地使用者眼中的长处/优势/机会
In the Haor area’ (local wetland ecosystem flooded during monsoon season) water hyacinths are naturally abundant. These are the basis and substrate for floating gardens. Hence, the technology makes use of local plants as resorces, as substrate of the floating garden. If required, floating bed can easily moved from one location to another. After preparation of the bed, no additional hard labour is required.
There is hardly pest infestation, therefore no use of pesticides is required.
After final harvest, the beds are used as organic compost for the fields. Further, the farmers either can sell or use the substrate of the garden as compost.
This simple technology and can easily be replicated.
During heavy rainfalls and storms, the crop are not damaged by floods since on a floating surface.

编制者或其他关键资源人员认为的长处/优势/机会
Through this technology, crops can be produced on the water surface. The usually abundant water hyacinth are used as a productive resource, which increases the surface for crop production. In contexts, such as Bangladesh, where land resources are scarce this opens production options in public/abundant water bodies for landless farmers, who can earn money within a short period and with little investment.
The production for home consumption improves nutrition, contributes to food security and surplus is sold at the market, which contribute to the income of poor households. The technology is useful for increasing production for home consumption and market.

6.8 技术的弱点/缺点/风险及其克服方法

土地使用者认为的弱点/缺点/风险	如何克服它们？
In some cases there are water leeches available in the water body. Therefore, people become afraid of preparing floating beds.	People polish diesel/kerosene oil in their body before preparation of floating beds to protect them from attack of leeches.
In some cases, water hyacinths are not available locally, consequently farmers face difficulties to prepare floating beds in distant places. Further challenges are the guarding/security of the gardens, the time consuming establishment of the beds.	Introduce and prepare floating gardens by supporting whole groups instead of individual famers.
Wave action and local streams may drift away the floating beds	Use bamboo pole to fix floating beds and prevent that they are floating away.

编制者或其他关键资源人员认为的弱点/缺点/风险	如何克服它们？
Non-availability of adequate quantity of water hyacinth in same place every year.	Prepare bed in the places where water hyacinth are available and then move the beds in to the desired locations.
Due to heavy wave action or heavy water flow, floating beds could be broken/destroyed.	Prepare small size beds.
Lack of awareness and willingness of farmers to practice this technology.	Organise meeting, training, demonstration, and learning visit.

7.1 信息的方法/来源

7.2 参考可用出版物

标题、作者、年份、ISBN:

A learning documentary on Floating Vegetable Garden, HELVETAS Swiss Intercooperation, March-2012, ISBN: 978-984-33-5313-9

可以从哪里获得?成本如何?

https://youtu.be/AK_qTm2pUsw

标题、作者、年份、ISBN:

Innovative Vegetable Cultivation, HELVETAS Swiss Intercooperation, 2012

可以从哪里获得?成本如何?

https://youtu.be/lhiraDjPymU

标题、作者、年份、ISBN:

Piloting Schemes Systematic Integration of DRR in LEAF - December 2010

可以从哪里获得?成本如何?

https://assets.helvetas.org/downloads/drr_capex.pdf

7.3 链接到网络上可用的相关信息

标题/说明:

A learning documentary on Floating Vegetable Garden, HELVETAS Swiss Intercooperation, March-2012, ISBN: 978-984-33-5313-9

URL:

https://youtu.be/AK_qTm2pUsw

标题/说明:

Innovative Vegetable Cultivation, HELVETAS Swiss Intercooperation, 2012

URL:

https://youtu.be/lhiraDjPymU

标题/说明:

Islam and Atkins, 2007. Indigenous floating cultivation: a sustainable agricultural practice in the wetlands of Bangladesh. Development in Practice 17:130-136.

URL:

https://www.jstor.org/stable/25548185?seq=1#page_scan_tab_contents

标题/说明:

Irfanullah et al., 2008. Introduction of floating gardening in the northeastern wetlands of Bangladesh for nutritional security and sustainable livelihood. Renewable Agriculture and Food Systems 23:89-96

URL:

http://nopr.niscair.res.in/bitstream/123456789/11064/1/IJTK%2010(1)%2031-38.pdf

标题/说明:

Irfanullah et al., 2011. Floating gardening in Bangladesh: a means to rebuild lives after devastating flood. Indian Journal of Traditional Knowledge 10:31-38.

URL:

http://nopr.niscair.res.in/bitstream/123456789/11064/1/IJTK%2010(1)%2031-38.pdf

标题/说明:

Irfanullah, 2013. Floating Gardening: a local lad becoming a climate celebrity? Clean Slate 88:26-27.

URL:

http://floodresilience.net/solutions/item/floating-gardening-a-local-lad-becoming-a-climate-celebrity