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/评估的机构名称（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

1.5 参考关于SLM方法（使用WOCAT记录的SLM方法）的调查问卷

Rehabilitation of terraces and diversion construction with gates … [也门]

The rehabilitation of walls and outlets of the terraces and diversion construction with accessories from channels and gates are carried out by the local community in a regular way

• 编制者： ahmed algalal
• 07/22/2013 midnight

2.1 技术简介

技术定义:

use the stones to build walls around agricultural terraces to protect them from erosion and make outlets (Spillway) to discharge excess water and prevent the destruction of the stands

2.2 技术的详细说明

说明:

Is a structural one of the types of measures and that is where build walls around the land of stones available in the area to protect agricultural terraces from erosion as a result of the speed of the water flow.
This process starts of building walls to collect stones available and building walls around the agricultural terraces, which is beside the waterway and then land agricultural away from the stream where are building walls around land terraces threatened drift ranges wall height 2-3 meters and a width of 30 cm and is accompanied by building outlets with the construction of the walls. Different view slot spillway and the number depending on the amount of water entering the agricultural land terraces which is used irrigation number of agricultural terraces about 4 - 5 terraces (pieces) where irrigation start from the top-down system of first come through outlets which works to protect the land from erosion and destruction by water pressure due process flood irrigation .
walls and outlets Were built by hands where the process of building need a long time, the walls are built gradually according to the height of the surface of the soil where you are collecting sediment , which requires him to do to raise the walls and well outlets .
The implementation of this technique in filled valleys on the slope moderate 5% of the irrigation system mixed and used to irrigate crop of grapes , mainly for the purpose of self-sufficiency and to go to the market to trade, is the technology of long-term investments that need to be high costs in the process of starch and because of the natural conditions of flow velocity and the output from a pool of water in the mountain slopes , the process of maintenance necessary to sustain and maintain the technology .

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:

也门

区域/州/省:

Sana

有关地点的进一步说明:

Bani Hushaish district

具体说明该技术的分布:

• 均匀地分布在一个区域

如果不知道精确的区域，请注明大致覆盖的区域:

• 10-100 平方千米

注释:

Total area covered by the SLM Technology is 20.6 km2.

Alrawanah Bani Hushaish, which is located on the eastern side of the capital Sanaa, and is about 16 km away

Map

×

2.6 实施日期

如果不知道确切的年份，请说明大概的日期:

• 50多年前（传统）

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）

注释（项目类型等）:

It is a very old technology but was rehabilitated in 1956 by the community

3.1 该技术的主要目的

• 减少、预防、恢复土地退化

3.2 应用该技术的当前土地利用类型

农田

• 乔木与灌木的种植

乔木和灌木种植 - 指定作物:

• 葡萄

• Qat

每年的生长季节数:

• 1

具体说明:

Longest growing period in days: 90

注释:

Major land use problems (compiler’s opinion): Erosion of riparian valley resulting from the floods in addition to gully erosion on agricultural land

Major land use problems (land users’ perception): Erosion of agricultural terraces

3.4 供水

该技术所应用土地的供水:

• 雨养

注释:

Water supply: Also mixed rainfed - irrigated and post-flooding

3.5 该技术所属的SLM组

• 横坡措施
• 灌溉管理（包括供水、排水）

3.6 包含该技术的可持续土地管理措施

结构措施

• S1：阶地

3.7 该技术强调的主要土地退化类型

土壤水蚀

• Wg：冲沟侵蚀/沟蚀
• Wr：河岸侵蚀

物理性土壤退化

• Ps：有机土壤沉降，土壤沉降

注释:

Secondary types of degradation addressed: Ps: subsidence of organic soils, settling of soil

Main causes of degradation: floods (As a result of flow velocity and rainwater collected from many places)

Secondary causes of degradation: over-exploitation of vegetation for domestic use (For domestic use due to lack of alternatives such as gas), poverty / wealth (poverty), education, access to knowledge and support services

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
• 修复/恢复严重退化的土地

注释:

Secondary goals: mitigation / reduction of land degradation

4.1 该技术的技术图纸

技术规范（与技术图纸相关）:

Stone walls with outlets

Location: Bani Hushaish district. Sana'a

Date: 15-3-2013

Technical knowledge required for field staff / advisors: high (The construction process requires skills and experiences)

Technical knowledge required for land users: low (Has enough experience)

Main technical functions: control of concentrated runoff: retain / trap, water spreading, Reduce runoff

Secondary technical functions: increase of groundwater level / recharge of groundwater, water harvesting / increase water supply, sediment retention / trapping, sediment harvesting

Spillway
Vertical interval between structures (m): S
Height of bunds/banks/others (m): 2 - 3
Width of bunds/banks/others (m): 1– 1.5

Structural measure: Stone walls
Vertical interval between structures (m): S
Height of bunds/banks/others (m): 2 - 3
Width of bunds/banks/others (m): 0.3
Length of bunds/banks/others (m): 60-100

Construction material (stone): Available stones in the region

Slope (which determines the spacing indicated above): 5%

For water harvesting: the ratio between the area where the harvested water is applied and the total area from which water is collected is: 1:1

4.2 有关投入和成本计算的一般信息

具体说明成本计算所用货币:

• 美元

4.3 技术建立活动

4.4 技术建立所需要的费用和投入

注释:

Duration of establishment phase: 12 month(s)

4.5 维护/经常性活动

4.6 维护/经常性活动所需要的费用和投入（每年）

注释:

Machinery/ tools: A Leveler , shovel and a big hammer

The calculated costs are based on the current situation and a length of the wall of 500 meters and a height of 2 meters and a width of 0.3 meters.
It should be noted that the walls do not work in all agricultural terraces, but they are working in areas threatened by drift but for outlets it is built in each of agricultural land terraces. Construction costs were calculated for walls with outlets including the number of working days per person. In fact most of the activities are at the same time and with the participation of a large number of people.

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 most determinate factors affecting the costs are the collection and the transport of stones, and the difficulty of the road

5.1 气候

5.2 地形

关于地形的注释和进一步规范:

Altitudinal zone: 2400 m a.s.l.

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。:

Soil depth on average: 150 cm

Soil texture: Flood deposits

Topsoil organic matter: After falling grape leaves and weeds developing

Soil fertility is low - medium (output of the flood deposits)

Soil drainage / infiltration is medium - good

Soil water storage capacity is medium - high

5.4 水资源可用性和质量

关于水质和水量的注释和进一步规范:

Ground water table: 400 m

5.5 生物多样性

5.6 应用该技术的土地使用者的特征

说明土地使用者的其他有关特征:

Land users applying the Technology are mainly common / average land users

Difference in the involvement of women and men: Women could not do the hard work, therefore, men do work on the farm and women do the house works.

Population density: > 500 persons/km2

Annual population growth: 3% - 4%

70% of the land users are average wealthy and own 90% of the land.
30% of the land users are poor and own 10% of the land.
100% of the land users are poor and own 100% of the land.

Level of mechanization: Also mechanized, but less common

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:

• 个人，有命名

土地使用权:

• 租赁
• 个人

• Waqf

用水权:

• 社区（有组织）

• Waqf

注释:

There are three types of land ownership owned, Waqf, and a share at 70%, 20%, 10% respectively.

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

收入和成本

社会文化影响

生态影响

水循环/径流

土壤

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

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

水文灾害

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

如若可行，进行量化（住户数量和/或覆盖面积）:

537 households covering 100 percent of the stated area

注释:

537 land user families have adopted the Technology without any external material support

There is a moderate trend towards spontaneous adoption of the Technology

Comments on adoption trend: The technology is implemented at the level of the entire region, but due to a lack of capital the adoption is hindered.

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

7.2 参考可用出版物

标题、作者、年份、ISBN:

Report of traditional knowledge and customs (sallam, et al, 2008)- General Census of Population, Housing and Establishment (Census, 2004). - 45.Guide of agricultural climate in Yemen (Al Khorasani, 2005).

可以从哪里获得?成本如何?

Agricultural Research and ExtensionAuthority, AREACentral Bureau of StatisticsAgricultural Research and ExtensionAuthority, AREA