技术

Rehabilitation of Degraded Lands ( Area closure) [埃塞俄比亚]

Kutura

technologies_1072 - 埃塞俄比亚

完整性: 67%

1. 一般信息

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

关键资源人

SLM专业人员:

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。:

1.5 参考关于SLM方法(使用WOCAT记录的SLM方法)的调查问卷

Community Organizations and Mobilization for Soil and Water Conservation Work (COM-SWC)
approaches

Community Organizations and Mobilization for Soil and Water … [埃塞俄比亚]

Community mobilization for soil and water conservation work in a watershed planning unit is an approach for collective action by organizing all active labor forces living in the kebele/peasant association into development group of 20-30 members and further divide into 1:5 work force to implement construction of soil and water …

  • 编制者: Gizaw Desta Gessesse

2. SLM技术的说明

2.1 技术简介

技术定义:

Closing the degraded land to let it to regenerate by excluding human and animal interference ans speed up the regeneration process by applying some SWC activities and undertake enrichment plantation.

2.2 技术的详细说明

说明:

Area closure is suitable for degraded lands. Degraded areas are excluded from animal and human contact and integrated with activities that speed up regeneration process such as SWC activities, agronomic measures, vegetative and management measures.

Purpose of the Technology: Area closure improves the productivity of degraded lands and protects down stream fields and properties from flooding and improves ground water recharge.

Establishment / maintenance activities and inputs: Management and utilization plan prepared and agreed. Planning and design of supplimentary measures are integrated.

Natural / human environment: Area closure is applicable in all areas that have lost vegetation cover and has low soil fertility.

2.5 已应用该技术的、本评估所涵盖的国家/地区/地点

国家:

埃塞俄比亚

区域/州/省:

SNNPR

有关地点的进一步说明:

Lemo

注释:

Total area covered by the SLM Technology is 10.5 km2.

Communities develop positive attitude towards activities implemented and results obtained such as livestock feed, fuel wood, bee forage, farm implements and construction materials.

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:
  • 通过项目/外部干预
注释(项目类型等):

It is introduced technology.

3. SLM技术的分类

3.1 该技术的主要目的

  • 减少、预防、恢复土地退化
  • 保护生态系统

3.2 应用该技术的当前土地利用类型

同一土地单元内混合使用的土地::

具体说明混合土地使用(作物/放牧/树木):
  • 农林牧业

农田

农田

  • 一年一作
  • 多年一作(非木材)
  • 乔木与灌木的种植
年作 - 具体指明作物:
  • 谷类 - 大麦
  • 谷物类 - 玉米
  • 谷类 - 其他
  • 豆科牧草和豆类 - 豆子
  • 根/块茎作物 - 土豆
  • wheat, teff, legumes, haricot
  • Enset, Desho, phalaris
乔木和灌木种植 - 指定作物:
  • 咖啡,露天种植
  • chat, Acacia saligina, Acaccia decurrens, Omedila, Grevillea robusta
每年的生长季节数:
  • 2
具体说明:

Longest growing period in days: 180 Longest growing period from month to month: Apr - Nov Second longest growing period in days: 150 Second longest growing period from month to month: Jan - May

采用间作制度了吗?:

如果是,说明哪些作物是间作的:

maize & haricot bean

森林/林地

森林/林地

  • 植树造林
产品和服务:
  • 木材
  • 薪材
  • 放牧/啃牧
  • 自然保持/保护
注释:

Major land use problems (compiler’s opinion): Overgrazing, low awarness of land users, lack of management plan for communal lands and low level of diversification of land users activities.

Major land use problems (land users’ perception): Shortage of grazing lands, lack of common understanding of the management of common resources.

Semi-nomadism / pastoralism: Yes

Grazingland comments: Inspite of decreasing grazing lands, farmers still want to own some heads of livestock. Grazinglands as a result are highly pressurized. Land users cut grass from area closures and carry them home to feed their livestock. Some land users who have few polts for grazing close them to grow grass.

Plantation forestry: Yes

Problems / comments regarding forest use: Natural forests do not exist. Planted forests are managed by the community. In the SWC area, a larger area was planted some 20 years ago but at present the planted forests have been cleared for cultivation. This is the result of high population growth. Some of the planteed forests have been cleared by demobilizing soldiers.

Type of cropping system and major crops comments: Cereals - Legumes - Cereals

Constraints of infrastructure network (roads, railways, pipe lines, power lines)

3.4 供水

该技术所应用土地的供水:
  • 雨养

3.5 该技术所属的SLM组

  • 区域封闭(停止使用,支持恢复)

3.6 包含该技术的可持续土地管理措施

3.7 该技术强调的主要土地退化类型

土壤水蚀

土壤水蚀

  • Wt:表土流失/地表侵蚀
  • Wg:冲沟侵蚀/沟蚀
  • Wo:场外劣化效应
化学性土壤退化

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)
物理性土壤退化

物理性土壤退化

  • Pu:由于其他活动而导致生物生产功能的丧失
水质恶化

水质恶化

  • Ha:干旱化
注释:

Main type of degradation addressed: Wt: loss of topsoil / surface erosion, Wg: gully erosion / gullying

Secondary types of degradation addressed: Wo: offsite degradation effects, Cn: fertility decline and reduced organic matter content, Pu: loss of bio-productive function due to other activities, Ha: aridification

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:
  • 修复/恢复严重退化的土地
注释:

Secondary goals: prevention of land degradation, mitigation / reduction of land degradation

4. 技术规范、实施活动、投入和成本

4.1 该技术的技术图纸

技术规范(与技术图纸相关):

SNNPR

Technical knowledge required for field staff / advisors: high

Technical knowledge required for land users: low

Main technical functions: control of dispersed runoff: retain / trap, control of concentrated runoff: retain / trap, improvement of ground cover, increase of infiltration

Secondary technical functions: increase / maintain water stored in soil, water harvesting / increase water supply, increase in soil fertility

Early planting
Material/ species: maize and potato
Remarks: row planting, broad casting

Mixed cropping / intercropping
Material/ species: maize & haricot bean
Remarks: row planting

Legume inter-planting
Remarks: broad casting

Manure / compost / residues
Material/ species: animal dung
Remarks: broad casting

Contour tillage
Remarks: along the contour

In blocks
Vegetative material: T : trees / shrubs
Number of plants per (ha): 2500
Vertical interval within rows / strips / blocks (m): 2

Vegetative measure: in blocks
Vegetative material: G : grass
Number of plants per (ha): 3333
Vertical interval between rows / strips / blocks (m): 1
Spacing between rows / strips / blocks (m): 10
Vertical interval within rows / strips / blocks (m): 0.3
Width within rows / strips / blocks (m): 0.3

Vegetative measure: Vegetative material: G : grass

Vegetative measure: Vegetative material: G : grass

Vegetative measure: Vegetative material: G : grass

Trees/ shrubs species: Acacia saligina, Acaccia decurrens, Omedila, Grevillea robusta

Grass species: Desho, phalaris

Slope (which determines the spacing indicated above): 15.00%

If the original slope has changed as a result of the Technology, the slope today is (see figure below): 8.00%

Gradient along the rows / strips: 0.00%

Retention/infiltration ditch/pit, sediment/sand trap
Vertical interval between structures (m): 3
Spacing between structures (m): 10
Depth of ditches/pits/dams (m): 0.5
Width of ditches/pits/dams (m): 0.3
Length of ditches/pits/dams (m): 3
Height of bunds/banks/others (m): 0.3
Width of bunds/banks/others (m): 1
Length of bunds/banks/others (m): 3

Terrace: forward sloping
Vertical interval between structures (m): 2
Spacing between structures (m): 10
Depth of ditches/pits/dams (m): 0.3
Width of ditches/pits/dams (m): 0.5
Length of ditches/pits/dams (m): 5
Height of bunds/banks/others (m): 0.3
Width of bunds/banks/others (m): 1
Length of bunds/banks/others (m): 30

Construction material (earth): Soil excavated from the ditches is used to make the embankment

Construction material (stone): Hill side terraces are supported with stones at the downslope side to make them stronger and stable.

Slope (which determines the spacing indicated above): 15%

If the original slope has changed as a result of the Technology, the slope today is: 8%

Lateral gradient along the structure: 0%

Vegetation is used for stabilisation of structures.

Change of land use type: from degraded agricultural land to area closure and practicing of cut and carry.

Other type of management: change of management / intensity level - from open access forms of grazing to guarding, plantation and construction of various SWC techniques.

4.2 有关投入和成本计算的一般信息

其它/国家货币(具体说明):

Birr

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=:

8.6

注明雇用劳工的每日平均工资成本:

0.70

4.3 技术建立活动

活动 时间(季度)
1. Seedling production through out the year
2. Transportation beginning of rains
3. Planting beginning of rains
4. Surveying dry season
5. Digging of ditches and construction of structural measures dry season
6. Stablization of terraces
7. Surveying the degraded land dry season
8. Awarness creation slack period from farming
9. Planning any time
10. Closing the area

4.4 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 Labour ha 1.0 505.8 505.8 50.0
设备 Machine use ha 1.0 83.27 83.27
设备 Tools ha 1.0 19.26 19.26 70.0
植物材料 Seeds ha 1.0 69.76 69.76 100.0
植物材料 Seedlings ha 1.0 116.28 116.28 100.0
技术建立所需总成本 794.37
技术建立总成本,美元 92.37
注释:

Duration of establishment phase: 24 month(s)

4.5 维护/经常性活动

活动 时间/频率
1. land preparation before rains / each cropping season
2. Replanting rainy season /once
3. Stablization of terraces rainy season/annual
4. Appointing guards / annual

4.6 维护/经常性活动所需要的费用和投入(每年)

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%
设备 Machine use ha 1.0 81.39 81.39
植物材料 Seedlings ha 1.0 7.3 7.3 100.0
技术维护所需总成本 88.69
技术维护总成本,美元 10.31
注释:

Machinery/ tools: hoe, shovel, gaso

The cost is calculated for labour needed to the construct SWC activities to rehablitate one hectar of degraded land.

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:

Higher slopes and shallow soil depths increase the cost of construction.

5. 自然和人文环境

5.1 气候

年降雨量
  • < 250毫米
  • 251-500毫米
  • 501-750毫米
  • 751-1,000毫米
  • 1,001-1,500毫米
  • 1,501-2,000毫米
  • 2,001-3,000毫米
  • 3,001-4,000毫米
  • > 4,000毫米
有关降雨的规范/注释:

900-1400 mm

农业气候带
  • 半湿润

> 180 days of LGP

5.2 地形

平均坡度:
  • 水平(0-2%)
  • 缓降(3-5%)
  • 平缓(6-10%)
  • 滚坡(11-15%)
  • 崎岖(16-30%)
  • 陡峭(31-60%)
  • 非常陡峭(>60%)
地形:
  • 高原/平原
  • 山脊
  • 山坡
  • 山地斜坡
  • 麓坡
  • 谷底
垂直分布带:
  • 0-100 m a.s.l.
  • 101-500 m a.s.l.
  • 501-1,000 m a.s.l.
  • 1,001-1,500 m a.s.l.
  • 1,501-2,000 m a.s.l.
  • 2,001-2,500 m a.s.l.
  • 2,501-3,000 m a.s.l.
  • 3,001-4,000 m a.s.l.
  • > 4,000 m a.s.l.
关于地形的注释和进一步规范:

Altitudinal zone: 2001-2500 m a.s.l. ( <2400m a.s.l., ranked 1) and 1,501-2,000 m a.s.l. ( >1900m a.s.l., ranked 2)
Slopes on average: Rolling (ranked 1), hilly (ranked 2) and gentle, moderate and steep (all ranked 3)

5.3 土壤

平均土层深度:
  • 非常浅(0-20厘米)
  • 浅(21-50厘米)
  • 中等深度(51-80厘米)
  • 深(81-120厘米)
  • 非常深(> 120厘米)
土壤质地(表土):
  • 中粒(壤土、粉土)
  • 细粒/重质(粘土)
表土有机质:
  • 中(1-3%)
  • 低(<1%)
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: Also moderately deep (ranked 2) and shallow (ranked 3)
Soil texture: Fine/heavy (mainly clay loam, ranked 1) and medium (ranked 2)
Soil fertility is medium (ranked 1), low (ranked 2), high (ranked 3)
Soil drainage/infiltration is good (ranked 1) and medium (ranked 2)
Soil water storage capacity high (ranked 1) and medium (ranked 2)

5.6 应用该技术的土地使用者的特征

生产系统的市场定位:
  • 生计(自给)
  • 混合(生计/商业)
非农收入:
  • 低于全部收入的10%
相对财富水平:
  • 贫瘠
  • 平均水平
机械化水平:
  • 手工作业
  • 畜力牵引
说明土地使用者的其他有关特征:

Population density: 200-500 persons/km2
Annual population growth: 3% - 4%
6% of the land users are rich and own 15% of the land.
45% of the land users are average wealthy and own 40% of the land.
35% of the land users are poor and own 30% of the land.
12% of the land users are poor and own 20% of the land.
Off-farm income specification: Some land users are engaged in small trading and some are daily labourer when they are free from field activities.
Level of mechanization: Animal traction (oxen plough system, ranked 1) and manual work (hoe and gaso, ranked 2)
Market orientation of forest production system: Mixed (ranked 1, individual plantation for market and domestic consumption), subsistence (ranked 2, individual woodlots plantation for domestic consumption) and commercial/market (ranked 3, community plantation for sale)

5.7 应用该技术的土地使用者使用的平均土地面积

  • < 0.5 公顷
  • 0.5-1 公顷
  • 1-2 公顷
  • 2-5公顷
  • 5-15公顷
  • 15-50公顷
  • 50-100公顷
  • 100-500公顷
  • 500-1,000公顷
  • 1,000-10,000公顷
  • > 10,000公顷
注释:

Crop land: Average holding size is about 0.5 ha
Grazing land: Owing to expansion of cultivated land, grazing land size has reduced and estimated at about 0.1 ha per household.
Forest land: Due to cultivated land expansion the average holding size is about 0.15ha

5.8 土地所有权、土地使用权和水使用权

土地所有权:
土地使用权:
  • 个人

6. 影响和结论性说明

6.1 该技术的现场影响

社会经济效应

生产

作物生产

降低
增加
注释/具体说明:

soil depth increased and soil fertility improved.

饲料生产

降低
增加
注释/具体说明:

biomass increased

饲料质量

降低
增加
注释/具体说明:

biomass increased

木材生产

降低
增加
注释/具体说明:

construction and fuel wood available

收入和成本

农业收入

降低
增加
注释/具体说明:

land productivity per unit area improved.

社会文化影响

社区机构

削弱
加强

国家机构

削弱
加强

SLM/土地退化知识

减少
改良

冲突缓解

恶化
改良
注释/具体说明:

loss of land for grazing and cultivation

生态影响

水循环/径流

多余水的排放

减少
改良
土壤

土壤水分

降低
增加
注释/具体说明:

productivity is enhanced

土壤覆盖层

减少
改良
注释/具体说明:

vegetation cover is improved

生物多样性:植被、动物

害虫/疾病控制

降低
增加
注释/具体说明:

Introduction of pests/wild animals

其它生态影响

Soil fertility

decreased
increased

Biodiversity

decreased
increased

6.2 该技术的场外影响已经显现

旱季稳定可靠的水流

减少
增加
注释/具体说明:

ground water recharging is improved

下游洪水

增加
减少
注释/具体说明:

runoff from the watershed is highly reduced

下游淤积

增加
降低
注释/具体说明:

sediments deposited behind the bund

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)?
短期回报:

消极

长期回报:

积极

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)?
短期回报:

稍微积极

长期回报:

积极

6.5 技术采用

如若可行,进行量化(住户数量和/或覆盖面积):

3990

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?:
  • 0-10%
注释:

97% of land user families have adopted the Technology with external material support

3800 land user families have adopted the Technology with external material support

Comments on acceptance with external material support: estimates

5% of land user families have adopted the Technology without any external material support

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

Comments on spontaneous adoption: estimates

There is a moderate trend towards spontaneous adoption of the Technology

Comments on adoption trend: The farmers have made some modifications in order to increase the effectivness of the technology, by making fences around enclosures.

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
Feed and forage sources improved

How can they be sustained / enhanced? Cut and carry system
Availability of fuel wood, farm implements and construction materials

How can they be sustained / enhanced? integrate with multipurpose tree species
Income from beekeeping due to area closure
编制者或其他关键资源人员认为的长处/优势/机会
Income generated from wood and grass sales.

How can they be sustained / enhanced? Equal share from the benefit to all land users.
Rapid recovery and rehabilitation of degraded lands.

How can they be sustained / enhanced? Integrate with multipurpose techniques and encourage cut and carry system.
The environment is protected, wildlife attracted and unproductive areas become productive.

How can they be sustained / enhanced? Awarness creation and technical support

7. 参考和链接

7.1 信息的方法/来源

模块