Rehabilitation of Degraded Lands ( Area closure) [Ethiopia]
- Creation:
- Update:
- Compiler: Unknown User
- Editor: –
- Reviewer: Fabian Ottiger
Kutura
technologies_1072 - Ethiopia
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Expand all Collapse all1. General information
1.2 Contact details of resource persons and institutions involved in the assessment and documentation of the Technology
1.3 Conditions regarding the use of data documented through WOCAT
When were the data compiled (in the field)?
30/05/2011
The compiler and key resource person(s) accept the conditions regarding the use of data documented through WOCAT:
Yes
1.5 Reference to Questionnaire(s) on SLM Approaches
Community Organizations and Mobilization for Soil and Water … [Ethiopia]
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 …
- Compiler: Gizaw Desta Gessesse
2. Description of the SLM Technology
2.1 Short description of the Technology
Definition of the Technology:
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 Detailed description of the Technology
Description:
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 Country/ region/ locations where the Technology has been applied and which are covered by this assessment
Country:
Ethiopia
Region/ State/ Province:
SNNPR
Further specification of location:
Lemo
Map
×2.6 Date of implementation
If precise year is not known, indicate approximate date:
- more than 50 years ago (traditional)
2.7 Introduction of the Technology
Specify how the Technology was introduced:
- through projects/ external interventions
Comments (type of project, etc.):
It is introduced technology.
3. Classification of the SLM Technology
3.1 Main purpose(s) of the Technology
- reduce, prevent, restore land degradation
- conserve ecosystem
3.2 Current land use type(s) where the Technology is applied
Cropland
- Annual cropping
- Perennial (non-woody) cropping
- Tree and shrub cropping
Main crops (cash and food crops):
Major cash crop annual cropping: Wheat
Major food crop annual cropping: Teff, barley, beans
Major food crop perennial (non-woody) cropping: Enset
Major cash crop tree/shrub cropping: Coffee, Chat
Mixed (crops/ grazing/ trees), incl. agroforestry
- Agro-silvopastoralism
Main products/ services:
Forest products and services: timber, fuelwood, grazing / browsing, nature conservation / protection
Comments:
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)
3.3 Further information about land use
Water supply for the land on which the Technology is applied:
- rainfed
Number of growing seasons per year:
- 2
Specify:
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
3.4 SLM group to which the Technology belongs
- area closure (stop use, support restoration)
3.5 Spread of the Technology
Comments:
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.
3.6 SLM measures comprising the Technology
3.7 Main types of land degradation addressed by the Technology
soil erosion by water
- Wt: loss of topsoil/ surface erosion
- Wg: gully erosion/ gullying
- Wo: offsite degradation effects
chemical soil deterioration
- Cn: fertility decline and reduced organic matter content (not caused by erosion)
physical soil deterioration
- Pu: loss of bio-productive function due to other activities
water degradation
- Ha: aridification
Comments:
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 Prevention, reduction, or restoration of land degradation
Specify the goal of the Technology with regard to land degradation:
- restore/ rehabilitate severely degraded land
Comments:
Secondary goals: prevention of land degradation, mitigation / reduction of land degradation
4. Technical specifications, implementation activities, inputs, and costs
4.2 Technical specifications/ explanations of technical drawing
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.
4.3 General information regarding the calculation of inputs and costs
other/ national currency (specify):
Birr
Indicate exchange rate from USD to local currency (if relevant): 1 USD =:
8.6
Indicate average wage cost of hired labour per day:
0.70
4.4 Establishment activities
Activity | Type of measure | Timing | |
---|---|---|---|
1. | Seedling production | Vegetative | through out the year |
2. | Transportation | Vegetative | beginning of rains |
3. | Planting | Vegetative | beginning of rains |
4. | Surveying | Structural | dry season |
5. | Digging of ditches and construction of structural measures | Structural | dry season |
6. | Stablization of terraces | Structural | |
7. | Surveying the degraded land | Management | dry season |
8. | Awarness creation | Management | slack period from farming |
9. | Planning | Management | any time |
10. | Closing the area | Management |
4.5 Costs and inputs needed for establishment
Specify input | Unit | Quantity | Costs per Unit | Total costs per input | % of costs borne by land users | |
---|---|---|---|---|---|---|
Labour | Labour | ha | 1.0 | 505.8 | 505.8 | 50.0 |
Equipment | Machine use | ha | 1.0 | 83.27 | 83.27 | |
Equipment | Tools | ha | 1.0 | 19.26 | 19.26 | 70.0 |
Plant material | Seeds | ha | 1.0 | 69.76 | 69.76 | 100.0 |
Plant material | Seedlings | ha | 1.0 | 116.28 | 116.28 | 100.0 |
Total costs for establishment of the Technology | 794.37 |
Comments:
Duration of establishment phase: 24 month(s)
4.6 Maintenance/ recurrent activities
Activity | Type of measure | Timing/ frequency | |
---|---|---|---|
1. | land preparation | Agronomic | before rains / each cropping season |
2. | Replanting | Vegetative | rainy season /once |
3. | Stablization of terraces | Structural | rainy season/annual |
4. | Appointing guards | Management | / annual |
4.7 Costs and inputs needed for maintenance/ recurrent activities (per year)
Specify input | Unit | Quantity | Costs per Unit | Total costs per input | % of costs borne by land users | |
---|---|---|---|---|---|---|
Equipment | Machine use | ha | 1.0 | 81.39 | 81.39 | |
Plant material | Seedlings | ha | 1.0 | 7.3 | 7.3 | 100.0 |
Total costs for maintenance of the Technology | 88.69 |
Comments:
Machinery/ tools: hoe, shovel, gaso
The cost is calculated for labour needed to the construct SWC activities to rehablitate one hectar of degraded land.
4.8 Most important factors affecting the costs
Describe the most determinate factors affecting the costs:
Higher slopes and shallow soil depths increase the cost of construction.
5. Natural and human environment
5.1 Climate
Annual rainfall
- < 250 mm
- 251-500 mm
- 501-750 mm
- 751-1,000 mm
- 1,001-1,500 mm
- 1,501-2,000 mm
- 2,001-3,000 mm
- 3,001-4,000 mm
- > 4,000 mm
Specifications/ comments on rainfall:
900-1400 mm
Agro-climatic zone
- sub-humid
> 180 days of LGP
5.2 Topography
Slopes on average:
- flat (0-2%)
- gentle (3-5%)
- moderate (6-10%)
- rolling (11-15%)
- hilly (16-30%)
- steep (31-60%)
- very steep (>60%)
Landforms:
- plateau/plains
- ridges
- mountain slopes
- hill slopes
- footslopes
- valley floors
Altitudinal zone:
- 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.
Comments and further specifications on topography:
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 Soils
Soil depth on average:
- very shallow (0-20 cm)
- shallow (21-50 cm)
- moderately deep (51-80 cm)
- deep (81-120 cm)
- very deep (> 120 cm)
Soil texture (topsoil):
- medium (loamy, silty)
- fine/ heavy (clay)
Topsoil organic matter:
- medium (1-3%)
- low (<1%)
If available, attach full soil description or specify the available information, e.g. soil type, soil PH/ acidity, Cation Exchange Capacity, nitrogen, salinity etc.
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 Characteristics of land users applying the Technology
Market orientation of production system:
- subsistence (self-supply)
- mixed (subsistence/ commercial
Off-farm income:
- less than 10% of all income
Relative level of wealth:
- poor
- average
Level of mechanization:
- manual work
- animal traction
Indicate other relevant characteristics of the land users:
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 Average area of land owned or leased by land users applying the Technology
- < 0.5 ha
- 0.5-1 ha
- 1-2 ha
- 2-5 ha
- 5-15 ha
- 15-50 ha
- 50-100 ha
- 100-500 ha
- 500-1,000 ha
- 1,000-10,000 ha
- > 10,000 ha
Comments:
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 Land ownership, land use rights, and water use rights
Land ownership:
- state
Land use rights:
- individual
6. Impacts and concluding statements
6.1 On-site impacts the Technology has shown
Socio-economic impacts
Production
crop production
Comments/ specify:
soil depth increased and soil fertility improved.
fodder production
Comments/ specify:
biomass increased
fodder quality
Comments/ specify:
biomass increased
wood production
Comments/ specify:
construction and fuel wood available
Income and costs
farm income
Comments/ specify:
land productivity per unit area improved.
Socio-cultural impacts
community institutions
national institutions
SLM/ land degradation knowledge
conflict mitigation
Comments/ specify:
loss of land for grazing and cultivation
Ecological impacts
Water cycle/ runoff
excess water drainage
Soil
soil moisture
Comments/ specify:
productivity is enhanced
soil cover
Comments/ specify:
vegetation cover is improved
Biodiversity: vegetation, animals
pest/ disease control
Comments/ specify:
Introduction of pests/wild animals
Other ecological impacts
Soil fertility
Biodiversity
6.2 Off-site impacts the Technology has shown
reliable and stable stream flows in dry season
Comments/ specify:
ground water recharging is improved
downstream flooding
Comments/ specify:
runoff from the watershed is highly reduced
downstream siltation
Comments/ specify:
sediments deposited behind the bund
6.4 Cost-benefit analysis
How do the benefits compare with the establishment costs (from land users’ perspective)?
Short-term returns:
negative
Long-term returns:
positive
How do the benefits compare with the maintenance/ recurrent costs (from land users' perspective)?
Short-term returns:
slightly positive
Long-term returns:
positive
6.5 Adoption of the Technology
If available, quantify (no. of households and/ or area covered):
3990
Of all those who have adopted the Technology, how many have did so spontaneously, i.e. without receiving any material incentives/ payments?
- 0-10%
Comments:
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 Strengths/ advantages/ opportunities of the Technology
Strengths/ advantages/ opportunities in the land user’s view |
---|
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 |
Strengths/ advantages/ opportunities in the compiler’s or other key resource person’s view |
---|
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 |
Links and modules
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Community Organizations and Mobilization for Soil and Water … [Ethiopia]
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 …
- Compiler: Gizaw Desta Gessesse
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