1.2 ຂໍ້ມູນ ການຕິດຕໍ່ພົວພັນ ຂອງບຸກຄົນທີ່ສໍາຄັນ ແລະ ສະຖາບັນ ທີ່ມີສ່ວນຮ່ວມ ໃນການປະເມີນເອກກະສານ ເຕັກໂນໂລຢີ

ຊື່ໂຄງການ ທີ່ອໍານວຍຄວາມສະດວກ ໃນການສ້າງເອກກະສານ/ປະເມີນ ເຕັກໂນໂລຢີ (ຖ້າກ່ຽວຂ້ອງ)

Book project: where the land is greener - Case Studies and Analysis of Soil and Water Conservation Initiatives Worldwide (where the land is greener)

ຊື່ສະຖາບັນ (ຫຼາຍສະຖາບັນ) ທີ່ອໍານວຍຄວາມສະດວກ ໃນການສ້າງເອກກະສານ / ປະເມີນ ເຕັກໂນໂລຢີ (ຖ້າກ່ຽວຂ້ອງ)

Ministry of Agriculture and Rural Development of Ethiopia (Ministry of Agriculture and Rural Development) - ອີທິໂອເປຍ

1.3 ເງື່ອນໄຂ ກ່ຽວກັບ ການນໍາໃຊ້ຂໍ້ມູນເອກະສານ ທີ່ສ້າງຂື້ນ ໂດຍຜ່ານ ອົງການພາບລວມຂອງໂລກ ທາງດ້ານແນວທາງ ແລະ ເຕັກໂນໂລຢີ ຂອງການອານຸລັກ ທໍາມະຊາດ (WOCAT)

ເມື່ອໃດທີ່ໄດ້ສັງລວມຂໍ້ມູນ (ຢູ່ພາກສະໜາມ)?

01/07/2003

ຜູ້ປ້ອນຂໍ້ມູນ ແລະ ບຸກຄົນສຳຄັນ ທີ່ໃຫ້ຂໍ້ມູນ (ຫຼາຍ) ຍິນຍອມ ຕາມເງື່ອນໄຂ ໃນການນຳໃຊ້ຂໍ້ມູນ ເພື່ອສ້າງເປັນເອກກະສານຂອງ WOCAT:

ແມ່ນ

1.4 ແຈ້ງການວ່າ ດ້ວຍຄວາມຍືນຍົງຂອງ ເຕັກໂນໂລຢີ

ການນໍາໃຊ້ ເຕັກໂນໂລຢີ ດັ່ງກ່າວໄດ້ອະທິບາຍ ເຖິງບັນຫາ ກ່ຽວກັບ ການເຊື່ອມໂຊມຂອງດິນບໍ? ຖ້າບໍ່ດັ່ງນັ້ນ ມັນບໍ່ສາມາດ ຢັ້ງຢືນໄດ້ວ່າ ເປັນເຕັກໂນໂລຊີ ໃນການຄຸ້ມຄອງ ທີ່ດິນແບບຍືນຍົງ? :

ບໍ່ແມ່ນ

2.1 ຄໍາອະທິບາຍສັ້ນຂອງ ເຕັກໂນໂລຢີ

ການກຳໜົດຄວາມໝາຍ ຂອງເຕັກໂນໂລຢີ:

Enclosing and protecting an area of degraded land from human use and animal interference, to permit natural rehabilitation, enhanced by additional vegetative and structural conservation measures.

2.2 ການອະທິບາຍ ລາຍລະອຽດ ຂອງເຕັກໂນໂລຢີ

ການພັນລະນາ:

Area closure involves the protection and resting of severely degraded land to restore its productive capacity. There are two major types of area enclosures practised in Ethiopia: (1) the most common type involves closing of an area from livestock and people so that natural regeneration of the vegetation can take place; (2) the second option comprises closing off degraded land while simultaneously implementing additional measures such as planting of seedlings, mulching and establishing water harvesting structures to enhance and speed up the regeneration process. The focus of this case study is on this second type.

The selection of measures chosen for rehabilitation depends mainly on the land use type, and to a lesser extent on climate, topography and soil type. Degraded croplands with individual land use rights are normally treated with additional structural measures to retain soil moisture and trap sediment, and with agronomic measures to restore soil fertility. Open access grazing lands are closed for natural regeneration while partly treated with additional measures, and open access woodlands are simply closed. In the case study area 60% of the enclosed area is under treatment with additional conservation measures and 40% is under natural regeneration. First, the area to be closed is demarcated and protected with fencing, usually live fences, and a site guard may be assigned to further ensure protection. Structural measures such as micro-basins, trenches, and bunds that enhance water infiltration and soil moisture may be constructed to increase survival rate of vegetative material planted. Hillside terraces, spaced at a 1 m vertical interval with a width of 1 m are constructed on steep slopes (exceeding 20%). Nitrogen-fixing and multipurpose shrubs/trees (for fodder, fuel) such as Acacia saligna, Sesbania sesban, Leucaena leucocephala as well as local grass species such as napier (Pennisetum purpureum) and rhodes (Chloris gayana) are planted as additional measures for conservation.

The maintenance of area enclosures involves activities such as replanting, maintaining of fences, pruning of trees and weeding. After one year, cut-and-carry of grass for stall-feeding can be partly practiced - which is of economic benefit to the farmers. Rehabilitation normally takes about 7-10 years depending on the level of degradation and intensity of management. Land use is limited to selective cutting of trees, collection of dead wood and cut-and-carry of grass for livestock fodder. On individually owned enclosures land users start cutting trees after three years (for eucalyptus) and after 7–8 years (for other trees), while on communal land farmers are allowed to collect dead wood after 3-–4 years, and the community decides about the use of trees.

2.3 ຮູບພາບຂອງເຕັກໂນໂລຢີ

2.5 ປະເທດ / ເຂດ / ສະຖານທີ່ບ່ອນທີ່ ເຕັກໂນໂລຢີ ໄດ້ຮັບການນໍາໃຊ້ ແລະ ທີ່ຖືກປົກຄຸມດ້ວຍການປະເມີນຜົນ

2.7 ການນໍາສະເໜີ ເຕັກໂນໂລຢີ

ໃຫ້ລະບຸ ເຕັກໂນໂລຢີ ໄດ້ຖືກຈັດຕັ້ງປະຕິບັດຄືແນວໃດ?

• ໂດຍຜ່ານໂຄງການ / ການຊ່ວຍເຫຼືອຈາກພາຍນອກ

3.1 ຈຸດປະສົງຫຼັກ (ຫຼາຍ) ຂອງເຕັກໂນໂລຢີ

• ປັບປຸງ ການຜະລິດ
• ຫຼຸດຜ່ອນ, ປ້ອງກັນ, ຟື້ນຟູ ການເຊື່ອມໂຊມຂອງດິນ
• ການອະນຸລັກ ລະບົບນິເວດ

3.2 ປະເພດການນໍາໃຊ້ທີ່ດິນ ໃນປະຈຸບັນ() ທີ່ເຕັກໂນໂລຢີ ໄດ້ຖືກນໍາໃຊ້

ຄວາມຄິດເຫັນ:

Major land use problems (compiler’s opinion): Over 30% of the land in the study area is degraded, resulting in low crop yields and poor livestock production. Severe water erosion is the main cause of land degradation on all slopes, followed by fertility depletion due to intensive cultivation practices and overgrazing. Serious gully formation and a high sediment load in the Bilate River threaten Lake Abaya. Communal grazing lands, woodlands with open access, and cultivated lands on steep slopes without conservation measures are particularly affected. By tradition, land users in rural Ethiopia can own as many livestock as they wish, which encourages overstocking.

Ranching: (before SWC)

Other grazingland: mixed silvo-pastoral (after SWC): cut-and-carry, trees

3.3 ຂໍ້ມູນເພີ່ມເຕີມກ່ຽວກັບການນໍາໃຊ້ທີ່ດິນ

ການສະໜອງນໍ້າ ໃນພື້ນທີ່ ທີ່ໄດ້ນໍາໃຊ້ ເຕັກໂນໂລຢີ:

• ນໍ້າຝົນ

ລະບຸ ຊະນິດ:

Longest growing period in days: 120 Longest growing period from month to month: Jun - Sep

3.4 ການນໍາໃຊ້ເຕັກໂນໂລຢີ ທີ່ຢູ່ໃນກຸ່ມການຄຸ້ມຄອງ ທີ່ດິນແບບຍືນຍົງ

• ການປິດພື້ນທີ່ (ຢຸດການນໍາໃຊ້, ເພື່ອປູກເປັນປ່າຟື້ນຟູ)
• ມາດຕະການ ຕັດຂວາງ ກັບຄວາມຄ້ອຍຊັນ

3.5 ການຂະຫຍາຍເຕັກໂນໂລຢີ

ຄວາມຄິດເຫັນ:

Total area covered by the SLM Technology is 20 m2.

3.6 ມາດຕະການ ການຄຸ້ມຄອງ ທີ່ດິນແບບຍືນຍົງ ປະກອບດ້ວຍ ເຕັກໂນໂລຢີ

3.7 ປະເພດດິນເຊື່ອມໂຊມ ຫຼັກທີ່ໄດ້ນໍາໃຊ້ ເຕັກໂນໂລຢີ

ຄວາມຄິດເຫັນ:

Main type of degradation addressed: Wt: loss of topsoil / surface erosion, Wg: gully erosion / gullying, Wo: offsite degradation effects, Cn: fertility decline and reduced organic matter content, Bc: reduction of vegetation cover, Bs: quality and species composition /diversity decline

3.8 ການປ້ອງກັນ, ການຫຼຸດຜ່ອນ, ຫຼືການຟື້ນຟູຂອງການເຊື່ອມໂຊມຂອງດິນ

ໃຫ້ລະບຸ ເປົ້າໝາຍ ເຕັກໂນໂລຢີ ທີ່ພົວພັນ ກັບຄວາມເຊື່ອມໂຊມຂອງດິນ:

• ການຟື້ນຟູ / ຟື້ນຟູດິນທີ່ຊຸດໂຊມ

4.1 ເຕັກນິກ ໃນການແຕ້ມແຜນວາດ ເຕັກໂນໂລຢີ

4.2 ການແຕ້ມແຜນວາດອະທິບາຍເຕັກນິກ

Rehabilitation of degraded land based on enclosure with live fence. Natural regeneration of vegetative cover is supported by water harvesting structures and planting of nitrogen-fixing/multipurpose shrubs and trees as well as local grass species. On steeper slopes hillside terraces may be established.

Technical knowledge required for field staff / advisors: moderate

Technical knowledge required for land users: moderate

Main technical functions: improvement of ground cover, increase of infiltration, control of dispersed runoff, control of concentrated runoff, increase in soil fertility

Secondary technical functions: increase / maintain water stored in soil, less sediment deportation

Mulching
Material/ species: tree leaves/grass

Scattered / dispersed
Vegetative material: T : trees / shrubs

Vegetative measure: oversowing grasses
Vegetative material: G : grass

Vegetative measure: Vegetative material: G : grass

Vegetative measure: Vegetative material: G : grass

Vegetative measure: Vegetative material: G : grass

Trees/ shrubs species: Acacia saligna, Sesbania sesban, Leucaena leucocephala, Eucalyptus spp., Grevillea robusta

Grass species: nepier (Pennisetum purpureum), rhodes (Chloris gayana)

Structural measure: micro-basins (opt.)

Structural measure: terraces (opt.)

Structural measure: bunds (opt.)

Other type of management: land use change, enclosure,, cut-and-carry

4.4 ການສ້າງຕັ້ງກິດຈະກໍາ

	ກິດຈະກໍາ	ປະເພດ ມາດຕະການ	ໄລຍະເວລາ
1.	Planting of trees (Eucalyptus spp., Grevillea robusta) as well as	ການບໍາລຸງລ້ຽງ	(early rainy season).
2.	Oversowing/interplanting with local grass species: napier grass	ການບໍາລຸງລ້ຽງ	(early rainy season).
3.	Marking the boundary and establishment of live fences: digging pits	ໂຄງສ້າງ	early rainy season (before June).
4.	Construction of structural measures such as micro- basins, trenches, bunds or hillside terraces.	ໂຄງສ້າງ	before rains

4.5 ຕົ້ນທຶນ ແລະ ປັດໄຈຂາເຂົ້າທີ່ຈໍາເປັນໃນຈັດຕັ້ງປະຕິບັດ

	ລະບຸ ປັດໃຈ ນໍາເຂົ້າ ໃນການຜະລີດ	ຫົວໜ່ວຍ	ປະລິມານ	ຕົ້ນທຶນ ຕໍ່ຫົວໜ່ວຍ	ຕົ້ນທຶນທັງໝົດ ຂອງປັດໃຈຂາເຂົ້າ ໃນການຜະລິດ	% ຂອງຕົ້ນທຶນທັງໝົດ ທີ່ຜູ້ນໍາໃຊ້ທີ່ດິນ ໃຊ້ຈ່າຍເອງ
ແຮງງານ	Labour	ha	1.0	175.0	175.0	50.0
ອຸປະກອນ	Tools	ha	1.0	25.0	25.0	100.0
ວັດສະດຸໃນການປູກ	Seeds	ha	1.0	40.0	40.0
ວັດສະດຸໃນການປູກ	Seedlings	ha	1.0	150.0	150.0
ວັດສະດຸກໍ່ສ້າງ	Stone	ha	1.0
ວັດສະດຸກໍ່ສ້າງ	Wood	ha	1.0
ອື່ນໆ	site guard (kg grain/ha/year)	ha	1.0	1.0	1.0	100.0
ຕົ້ນທຶນທັງໝົດ ໃນການຈັດຕັ້ງປະຕິບັດ ເຕັກໂນໂລຢີ					391.0

ຄວາມຄິດເຫັນ:

Duration of establishment phase: 2 month(s)

4.6 ບໍາລຸງຮັກສາ / ແຜນຈັດຕັ້ງປະຕິບັດ ກິດຈະກໍາ

	ກິດຈະກໍາ	ປະເພດ ມາດຕະການ	ໄລຍະເວລາ / ຄວາມຖີ່
1.	Mulching with tree leaves/grass around newly planted trees, before	ພືດ	before rains / initial establishment
2.	Replanting/gapping up live fence and trees during rains in the early	ການບໍາລຸງລ້ຽງ	during rains /
3.	Harvesting grass	ການບໍາລຸງລ້ຽງ	during rainy season. /
4.	Pruning of trees	ການບໍາລຸງລ້ຽງ	in the dry season. /
5.	Weeding	ການບໍາລຸງລ້ຽງ	after rains. /
6.	Repairing breaks in structures	ໂຄງສ້າງ	before rains./

4.7 ຄ່າໃຊ້ຈ່າຍ ແລະ ປັດໄຈນໍາເຂົ້າທີ່ຈໍາເປັນສໍາລັບການບໍາລຸງຮັກສາກິດຈະກໍາ / ແຜນປະຕິບັດ (ຕໍ່ປີ)

	ລະບຸ ປັດໃຈ ນໍາເຂົ້າ ໃນການຜະລີດ	ຫົວໜ່ວຍ	ປະລິມານ	ຕົ້ນທຶນ ຕໍ່ຫົວໜ່ວຍ	ຕົ້ນທຶນທັງໝົດ ຂອງປັດໃຈຂາເຂົ້າ ໃນການຜະລິດ	% ຂອງຕົ້ນທຶນທັງໝົດ ທີ່ຜູ້ນໍາໃຊ້ທີ່ດິນ ໃຊ້ຈ່າຍເອງ
ແຮງງານ	Labour	ha	1.0	35.0	35.0	100.0
ອຸປະກອນ	Tools	ha	1.0	5.0	5.0	100.0
ວັດສະດຸໃນການປູກ	Seeds	ha	1.0	10.0	10.0
ວັດສະດຸໃນການປູກ	Seedlings	ha	1.0	40.0	40.0
ອື່ນໆ	site guard (kg grain/ha/year)	ha	1.0	1.0	1.0	100.0
ຕົ້ນທຶນທັງໝົດ ທີ່ໃຊ້ໃນການບໍາລຸງຮັກສາ ເຕັກໂນໂລຢີ					91.0

ຄວາມຄິດເຫັນ:

Labour for establishment activities: 250 person days per ha for structural measures and planting of trees, plus guarding. Labour for maintenance: 50 person days for replanting/weeding. A common daily wage is US$ 0.70 (= 6 Ethiopian Birr), however in this case the site guards were given 3 kg of grains per ha per year. They can control over 200 ha.

5.1 ອາກາດ

5.2 ພູມິປະເທດ

ຄຳເຫັນ ແລະ ຂໍ້ມູນສະເພາະ ເພີ່ມເຕີມ ກ່ຽວກັບ ພູມີປະເທດ:

Altitudinal zone: Also 1,001-1,500 m a.s.l. (ranked 2) and 2001-2500 m a.s.l. (ranked 3)
Slopes on average: Also hilly (ranked 2) and moderate (ranked 3)

5.3 ດິນ

ຖ້າເປັນໄປໄດ້ ແມ່ນໃຫ້ຕິດຄັດ ການພັນລະນາດິນ ຫຼື ຂໍ້ມູນສະເພາະຂອງດິນ, ຕົວຢ່າງ, ຄຸນລັກສະນະ ປະເພດຂອງດິນ, ຄ່າຄວາມເປັນກົດ / ເປັນດ່າງຂອງດິນ, ສານອາຫານ,​ ດິນເຄັມ ແລະ ອື່ນໆ.

Soil depth on average: Also moderately deep (ranked 2) and deep (ranked 3)
Soil fertility: Low
Topsoil organic matter: Also medium and high (both ranked 2)
Soil drainage/infiltration: Good
Soil water storage capacity: Very high

5.6 ຄຸນລັກສະນະ ຂອງຜູ້ນໍາໃຊ້ທີ່ດິນ ທີ່ໄດ້ນໍາໃຊ້ເຕັກໂນໂລຢີ

ໃຫ້ລະບຸ ຄຸນລັກສະນະ ຂອງຜູ້ນໍາໃຊ້ທີ່ດິນ:

Off-farm income specification: from petty trade, weaving, etc

5.7 ພື້ນທີ່ສະເລ່ຍຂອງທີ່ດິນ ຫຼື ເຊົ່າໂດຍຜູ້ໃຊ້ທີ່ດິນການນໍາໃຊ້ ເຕັກໂນໂລຢີ

5.8 ເຈົ້າຂອງທີ່ດິນ, ສິດໃຊ້ທີ່ດິນ, ແລະ ສິດທິການນໍາໃຊ້ນໍ້າ

ເຈົ້າຂອງດິນ:

• ລັດ

ສິດທິ ໃນການນໍາໃຊ້ທີ່ດິນ:

• ເປີດກວ້າງ (ບໍ່ມີການຈັດຕັ້ງ)
• ບຸກຄົນ

6.1 ການສະແດງຜົນກະທົບ ພາຍໃນພື້ນທີ່ ທີ່ໄດ້ຈັດຕັ້ງປະຕິບັດ ເຕັກໂນໂລຢີ

ຜົນກະທົບທາງເສດຖະກິດສັງຄົມ

ການຜະລິດ

ລາຍໄດ້ ແລະ ຄ່າໃຊ້ຈ່າຍ

ຜົນກະທົບດ້ານວັດທະນາທໍາສັງຄົມ

ຜົນກະທົບຕໍ່ລະບົບນິເວດ

ວົງຈອນນໍ້າ / ນໍ້າ

ດິນ

ຜົນກະທົບຕໍ່ລະບົບນິເວດອື່ນໆ

6.2 ຜົນກະທົບທາງອ້ອມ ຈາກການນໍາໃຊ້ເຕັກໂນໂລຢີ

6.4 ການວິເຄາະຕົ້ນທຶນ ແລະ ຜົນປະໂຫຍດ

ຈະເຮັດປະໂຫຍດເພື່ອປຽບທຽບກັບຄ່າໃຊ້ຈ່າຍກັບສິ່ງກໍ່ສ້າງ (ຈາກທັດສະນະຂອງຜູ້ນຳໃຊ້ທີ່ດິນ) ໄດ້ແນວໃດ?

ຈະໄດ້ຮັບຜົນປະໂຫຍດເມື່ອປຽບທຽບກັບ / ຄ່າໃຊ້ຈ່າຍໃນການບຳລຸງຮັກສາທີເ່ກີດຂື້ນອິກ (ຈາກທັດສະນະຄະຕິຂອງຜູ້ນຳໃຊ້ທີ່ດິນ) ໄດ້ແນວໃດ?

6.5 ການປັບຕົວຮັບເອົາເຕັກໂນໂລຢີ

ທັງໝົດນັ້ນ ແມ່ນໃຜ ທີ່ເປັນຜູ້ປັບຕົວ ໃນການນໍາໃຊ້ ເຕັກໂນໂລຢີ, ມີຈັກຄົນ ທີ່ສາມາດເຮັດເອງໄດ້, ຕົວຢ່າງ, ປາດສະຈາກ ການຊ່ວຍເຫຼືອ ທາງດ້ານອຸປະກອນ / ການຈ່າຍເປັນເງິນ?

• 90-100%

ຄວາມຄິດເຫັນ:

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

90% of 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: Adoption rate has considerably increased owing to improved ownership feeling and immense benefits obtained through the practice. However, if labour-intensive structural measures are required people rely on food-for-work incentives.

6.7 ຈຸດແຂງ / ຂໍ້ດີ / ໂອກາດ ໃນການນໍາໃຊ້ ເຕັກໂນໂລຢີ

ຈຸດແຂງ / ຈຸດດີ / ໂອກາດ ຈາກທັດສະນະຂອງຜູ້ປ້ອນຂໍ້ມູນ ຫຼື ບຸກຄົນສຳຄັນ
Reduction of on-site and off-site land degradation, reclamation of degraded non-productive land (regenerating fertility) How can they be sustained / enhanced? Strengthen maintenance and protection to increase biomass production of enclosure.
Fodder shortage is reduced through cut-and-carry of grass in enclosures (after 1 year) How can they be sustained / enhanced? Introduce more productive and nutritious grass/legume species.
Collection of dead wood from enclosures (after 3–4 years) mitigates fuelwood shortage How can they be sustained / enhanced? Introduce alternative fast growing multi-purpose tree species such as Grevillea robusta (fodder for smallstock in very dry periods).
Cutting wood for construction of houses and wooden farm implements (after 7–8 years) How can they be sustained / enhanced? Continue planting of multipurpose trees.
Increased honey production through increased bee activity in enclosures Emerge of springs, which have disappeared due to deforestation/land degradation Income generation: farmers sell grass/wood collected from area enclosures; they make profit despite seven years enclosure How can they be sustained / enhanced? Improve beehives, ‘bee feed’ (bee-friendly plants), and access to market. Maintain proper ground cover to improve infiltration and percolation of rainwater. Better management of planted grass, making of hay, improve market systems.
Emergence of springs, which have disappeared due to deforestation/land degradation -> Maintain proper ground cover to improve infiltration and percolation of rainwater. - Income generation: farmers sell grass/wood collected from area enclosures; they make profit despite seven years enclosure -> Better management of planted grass, making of hay, improve market systems. Editors’ comments: Protecting degraded land against grazing is a common practice worldwide. In Ethiopia it is the second most important SWC practice after structural conservation measures. About 1.2 million hectares of degraded lands have been closed for rehabilitation in Ethiopia during the past three decades. As this case study shows, results are encouraging both in terms of effective protection and enhanced production. Land use rights: open access on woodlands and grazing lands (communal land use rights), individual on cropland

6.8 ຈຸດອ່ອນ / ຂໍ້ເສຍ / ຄວາມສ່ຽງ ໃນການນໍາໃຊ້ ເຕັກໂນໂລຢີ ແລະ ວິທີການແກ້ໄຂບັນຫາ

ຈຸດອ່ອນ/ຂໍ້ບົກຜ່ອງ/ຄວາມສ່ຽງ ຈາກທັດສະນະຂອງຜູ້ປ້ອນຂໍ້ມູນ ຫຼື ບຸກຄົນສຳຄັນ	ມີວິທີການແກ້ໄຂຄືແນວໃດ?
On highly eroded areas and in areas with low rainfall the survival rate of trees and shrubs is low and as a result the benefits only come after a very long period. This situation becomes unacceptable to the land users	Select suitable local and exotic multipurpose tree/shrub species adapted to the local conditions (Acacia spp., Eucalyptus spp., Grevillea robusta etc). Construct water-harvesting structures (trenches, micro-basins). Raise awareness among land users through meetings and training.
Investment costs are rather high for land users	Credits, loans, cooperatives.
Inequitable share of benefits	Awareness should be increased through enhancing the LLPP approach.

7.2 ເອກກະສານອ້າງອີງທີ່ເປັນບົດລາຍງານ

ຫົວຂໍ້, ຜູ້ຂຽນ, ປີ, ISBN:

Chadokar PA: Multipurpose Plant Species for Soil and Water Conservation. Assistance to Soil and Water ConservationProgramme. ETH/81/003. 1985.

ຫົວຂໍ້, ຜູ້ຂຽນ, ປີ, ISBN:

Betru Nedassa: Biological Soil Conservation Measures. Land Rehabilitation and Reforestation Project. Project 2488MOA/WFP. 1995.