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）

有助于对技术进行记录/评估的机构名称（如相关）

1.3 关于使用通过WOCAT记录的数据的条件

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

2.1 技术简介

技术定义:

A Local Indigenous Weir to Harness Water

2.2 技术的详细说明

说明:

Local villagers initiated the construction and use of communal weir with locally available materials such as wood and stones to create structure and stabilize the weir. Previously, the local people had constructed several irrigation weirs on a particular stream with each one being adjacent to an individual farm. However this arrangement created water use conflicts, particularly during dry season. Therefore people decided to group together in 2003 in order to build a communal weir and vowed to maintain it on an annual basis. This was a significant commitment as often it is difficult to find the necessary construction materials for the weir’s upkeep.
The main features and components of its framework should be prepared in the following manner: Firstly prior to beginning the weir’s construction one should gather rattan with length of 1-1.5 meters to tie the logs with each posts, as well as post with a diameter approximately 10 cm that should be cut to a length of 1.5 meters. The posts should then be sharpened at the end so that they can ideally be driven 50 cm into the ground, but this will depend on the conditions at the weir site. There should be a distance of 50 cm between each of the posts and these should be installed in two parallel rows with a space of 1 meter between the rows each rows width 1 meters and height 1 meter from the ground that cross the stream about 25 meters long.
Once this has been completed logs with diameter about 20 cm and a length of 4-5 meters should be slotted behind the rows posts and lay the another logs on the previous post until reach to the top of the post as the first layer. The second layer behind the logs should consist of small stones, soil, as well as branches and sticks. This procedure should be completed until the wall of horizontal logs has reached the height 1 meter of the top of the posts. Afterwards large stones should be placed as the top layer of the weir’s crest in order to strengthening the weir from flash flood. After that continue repeating the same process for the second row, driven the posts into the ground for 50 cm in front of the first row with distance of 1 meter and lower than first low for 50 cm, slotted behind the rows posts as the first layer. The second layer behind the logs (in front of the first row) consist small stones, soil, branch and sticks. Finally install large stones on the ground in front of the second row in order to strengthening and prevent leakages at bottom of the weir until reaching the required height. For instance, install the first row, then the second row is installed same as the first row in which the height of the second row is lower than the first row about 50 cm, and install large stones on ground of the third row to prevent leakages at bottom of the weir.

The main purpose of the weir is to provide an adequate water supply for agricultural activities in communal areas. Some households have also installed a dynamo (electric generator) with a production capacity of 1 Kwh. It should be noted that it is important to maintain the weir by regularly replacing the logs and adding more stones as required. One of the benefits of the weir is the ability to carry out agricultural activities in both the rainy and dry seasons. Furthermore water can be used for household gardening and the generation of electricity with the installation of a small dynamo where a channel with fast running water has been created. However, the weir does also have some drawbacks such as the significant numbers of logs that are required to firstly build and then maintain the weir annually. Therefore some land owners or land users may not choose this scheme due to these regular maintenance requirements with the need for logs which are declining in numbers and becoming increasingly difficult to source. At the same time this requirement may also affect forest resources and places time pressure on people to conduct the maintenance.

2.3 技术照片

2.5 已应用该技术的、本评估所涵盖的国家/地区/地点

国家:

老挝人民民主共和国

区域/州/省:

Tangnong village, Dakchaung district, Sekong province

具体说明该技术的分布:

• 适用于特定场所/集中在较小区域

注释:

There are 2 dykes on that stream

Map

×

2.6 实施日期

注明实施年份:

2003

如果不知道确切的年份，请说明大概的日期:

• 10-50年前

2.7 技术介绍

详细说明该技术是如何引入的:

• 作为传统系统的一部分（> 50 年）

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

3.2 应用该技术的当前土地利用类型

农田

• 一年一作

年作 - 具体指明作物:

• 谷类 - 水稻（湿地）
• 蔬菜 - 其他

每年的生长季节数:

• 1

具体说明:

paddy rice is the main product

水道、水体、湿地

• 池塘、大坝

主要产品/服务:

paddy rice, electric generation

3.4 供水

该技术所应用土地的供水:

• 充分灌溉

3.5 该技术所属的SLM组

• 集水
• 节能技术
• 减少基于生态系统的灾害风险

3.6 包含该技术的可持续土地管理措施

结构措施

• S5：大坝、集水斗、水池
• S10：节能措施

3.7 该技术强调的主要土地退化类型

化学性土壤退化

• Cn：肥力下降和有机质含量下降（非侵蚀所致）

水质恶化

• Ha：干旱化

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

注释:

Sediments are leached from the mountain areas flow down to the stream ant therefrore the water contains organic matter that is beneficial for crops.

4.1 该技术的技术图纸

技术规范（与技术图纸相关）:

The posts have length of about 1.5 m that are fixed into the ground water bottom at a deepness of around 50 cm.
There are two dike rows, each have width of 1 m and a length of approximattly 25 m (corresponding to the width of the stream)
The space between the two dikes is 1 m, the slope angle is 3-5 %
The beneficial area of these dikes is 10 ha of irrigated rice.
The construction material used consists of wooden post (diameters 10 cm and/a length 1.5 m), wood logs with of 20 cm diameter and length of 4-5 m, rattan used to thigten the wood logs with the post. Soil and small stone are put in the back of the wood logs and between the space of the two structures to limit water penetration. Then, also big stones are placed in front of the wood posts to stabilize the structure of the dikes.
After completion of the dike construction, a canal above the upper dike has to be digged to drain the accumulated water into the rice field.

作者:

Khampheng Bounyavong

日期:

12/05/2017

4.2 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:

• 每个技术单元

其它/国家货币（具体说明）:

Kip

如相关，注明美元与当地货币的汇率（例如1美元=79.9巴西雷亚尔）：1美元=:

8000.0

4.3 技术建立活动

4.4 技术建立所需要的费用和投入

4.5 维护/经常性活动

注释:

Each year, people from the local community have to maintain and repair the dikes.

4.6 维护/经常性活动所需要的费用和投入（每年）

4.7 影响成本的最重要因素

描述影响成本的最决定性因素:

The labour for collecting the wood logs and the labour for the construction of the dike.

5.1 气候

5.2 地形

说明该技术是否专门应用于:

• 凸形情况

5.3 土壤

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？:

否

5.5 生物多样性

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使用的平均土地面积

5.8 土地所有权、土地使用权和水使用权

土地所有权:

• 社区/村庄
• 个人，未命名

土地使用权:

• 个人

用水权:

• 自由进入（无组织）

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

水资源可用性和质量

社会文化影响

生态影响

水循环/径流

减少气候和灾害风险

6.2 该技术的场外影响已经显现

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）

渐变气候

渐变气候

气候有关的极端情况（灾害）

气象灾害

气候灾害

水文灾害

生物灾害

其他气候相关的后果

其他气候相关的后果

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）？

6.5 技术采用

• 11-50%

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

• 91-100%

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

6.8 技术的弱点/缺点/风险及其克服方法

7.1 信息的方法/来源