1.2 ព័ត៌មានលម្អិតពីបុគ្គលសំខាន់ៗ និងស្ថាប័នដែលចូលរួមក្នុងការវាយតម្លៃ និងចងក្រងឯកសារនៃបច្ចេកទេស

ឈ្មោះគម្រោងដែលបានចងក្រងឯកសារ/ វាយតម្លៃលើបច្ចេកទេស (បើទាក់ទង)

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

ឈ្មោះអង្គភាពមួយ (ច្រើន) ដែលបានចងក្រងឯកសារ/ វាយតម្លៃបច្ចេកទេស (បើទាក់ទង)

World Association of Soil and Water Conservation (WASWC) - ប្រទេសចិន

1.3 លក្ខខណ្ឌទាក់ទងទៅនឹងការប្រើប្រាស់ទិន្នន័យដែលបានចងក្រងតាមរយៈ វ៉ូខេត

តើពេលណាដែលទិន្នន័យបានចងក្រង (នៅទីវាល)?

30/05/2000

អ្នកចងក្រង និង(បុគ្គលសំខាន់ៗ)យល់ព្រមទទួលយកនូវលក្ខខណ្ឌនានាទាក់ទងទៅនឹងការប្រើប្រាស់ទិន្នន័យដែលបានចងក្រងតាមរយៈវ៉ូខេត:

បាទ/ចា៎

2.1 ការពណ៌នាដោយសង្ខេបពីបច្ចេកទេស

និយមន័យបច្ចេកទេស:

Terraces with narrow beds, used for growing tea, coffee, and horticultural crops on hillsides cleared from forests.

2.2 ការពណ៌នាលម្អិតពីបច្ចេកទេស

ការពណ៌នា:

The terraces described in this case study from northern Thailand are found on hilly slopes with deep soils. The climate is humid and tropical, with 1,700-2,000 mm of rainfall annually. The main aim of the terraces is to facilitate cultivation of tea or coffee on sloping land: erosion control is secondary. Coffee and tea, as well as flowers and vegetables, are good alternatives to opium poppies - which it is government policy to eradicate.

Purpose of the Technology: After clearing natural and secondary forests by slash and burn, terraces are aligned by eye - and constructed by hoe. The width of the bed is 1.0-1.5 m depending on slope, though there are no specific technical guidelines. The length of each terrace can be up to 25 m. Down the slope, after every 3-4 terraces, there are lateral drainage channels, approximately 20-30 cm wide and 10 cm deep. Situated at the foot of a riser, each channel has a gradient of 0.5% or less. Excess water - some of which cascades over the terrace risers, with some draining through the soil - is discharged through these channels, generally to natural waterways. The risers are steep, with a slope of above 100%, and without a defined lip.

Establishment / maintenance activities and inputs: Natural grass cover develops on the risers: this is cut back by hand hoe or machete, or completely removed. The grass is often burned. After harvest (of annual crops), the land is left until immediately before the next rainy season. The terraces at this stage are covered by weeds and grasses. Land is then tilled by hoe. The weeds and grasses are removed and heaped in piles outside the cropped area. They are not composted or used for mulching - and here an opportunity is missed. Where soil fertility is a problem, chemical fertilizers are used. Maintenance includes building up/repairing of risers and levelling of terrace beds as required.

Natural / human environment: The technology was pioneered, and continues to be practiced, by refugee immigrants from China looking for new areas to start farming. These immigrants first came in the 1950s, and cultivated simply through slash and burn techniques. During the 1970s they visited relatives in Taiwan and brought back the idea of small terraces. Originally they settled illegally, but eventually they were given official permission to stay. However, official title deeds to their land have not yet been allocated.

2.3 ​រូបភាពនៃបច្ចេកទេស

2.5 ប្រទេស/តំបន់/ទីតាំងកន្លែង ដែលបច្ចេកទេសត្រូវបានអនុវត្ត និងបានគ្រប់ដណ្តប់ដោយការវាយតម្លៃនេះ

2.6 កាលបរិច្ឆេទនៃការអនុវត្ត

ប្រសិនបើមិនច្បាស់ឆ្នាំ សូមបញ្ជាក់កាលបរិច្ឆេទដែលប្រហាក់ប្រហែល:

• តិចជាង 10ឆ្នាំមុន (ថ្មី)

2.7 ការណែនាំពីបច្ចេកទេស

សូមបញ្ជាក់តើបច្ចេកទេសត្រូវបានណែនាំឱ្យអនុវត្តដោយរបៀបណា:

• តាមរយៈការបង្កើតថ្មីរបស់អ្នកប្រើប្រាស់ដី

មតិយោបល់ (ប្រភេទនៃគម្រោង ។ល។):

Taiwan.

3.1 គោលបំណងចម្បង (១​ ឬច្រើន)​ នៃបច្ចេកទេសនេះ

• ធ្វើឱ្យប្រសើរឡើងនូវផលិតកម្ម
• កាត់បន្ថយ, បង្ការ, ស្តារឡើងវិញនូវការធ្លាក់ចុះគុណភាពដី
• បង្កើតផលប្រយោជន៍សេដ្ឋកិច្ច

3.2 ប្រភេទដីប្រើប្រាស់មួយប្រភេទ (ច្រើនប្រភេទ) ដែលបានអនុវត្តបច្ចេកទេស

មតិយោបល់:

Major land use problems (compiler’s opinion): - soil erosion on cultivated hillsides
- practical difficulties in tending tea, coffee, vegetables and flowers on sloping land: farming is much easier on levelled land
- Lacking of land ownership (The whole area is reserved forest.)
- Low price of agricultural produce.

Major land use problems (land users’ perception): 1. Lacking of land ownership. 2. Landusers do not have Thai citizenship; less than 20% have ID cards (not citizenship).
Forest: before SWC measures

3.3 ព័ត៌មានបន្ថែមអំពីអ្នកប្រើប្រាស់ដី

ការផ្គត់ផ្គង់ទឹកនៅកន្លែងអនុវត្តបច្ចេកទេស:

• ទឹកភ្លៀង

ចំនួនសារដែលដាំដំណាំក្នុងមួយឆ្នាំ:

• 2

សូមបញ្ជាក់:

Longest growing period in days: 150 Longest growing period from month to month: Dec - Apr

3.4 ក្រុម SLM ដែលបច្ចេកទេសស្ថិតនៅក្នុង

• វិធានការអនុវត្តកាត់ទទឹងទីជម្រាល
• ការបែងចែកទឹក និងប្រព័ន្ធបង្ហូរ

3.5 ការសាយភាយនៃបច្ចេកទេស

បញ្ជាក់ពីការសាយភាយនៃបច្ចេកទេស:

• ត្រូវបានផ្សព្វផ្សាយត្រឹមតំបន់មួយ

ប្រសិនបើបច្ចេកទេសត្រូវបានសាយភាយពាសពេញតំបន់ណាមួយ សូមកំណត់ទំហំផ្ទៃដីអនុវត្តន៍:

• 1-10 គម2

មតិយោបល់:

Total area covered by the SLM Technology is 5 km2.

This practice has been done by tribal people such as E-kaw, Lahu, Lisu, Mien, Khin, Thai Yai, Haw Chinese, H'mong

3.6 វិធានការ SLM ដែលបញ្ចូលនូវបច្ចេកទេស

មតិយោបល់:

Main measures: structural measures

Secondary measures: vegetative measures

3.7 កំណត់ប្រភេទនៃការធ្លាក់ចុះគុណភាពដីសំខាន់ៗដែលបច្ចេកទេសនេះបានដោះស្រាយ

មតិយោបល់:

Main type of degradation addressed: Wt: loss of topsoil / surface erosion, Cn: fertility decline and reduced organic matter content, Ha: aridification

Main causes of degradation: deforestation / removal of natural vegetation (incl. forest fires), Lack of enforcement of legislation or authority

Secondary causes of degradation: other human induced causes (specify) (Agricultural activities), other natural causes (avalanches, volcanic eruptions, mud flows, highly susceptible natural resources, extreme topography, etc.) specify

3.8 ការពារ កាត់បន្ថយ ឬស្តារឡើងវិញនៃការធ្លាក់ចុះគុណភាពដី

បញ្ជាក់ពីគោលដៅរបស់បច្ចេកទេស ដែលផ្តោតទៅការធ្លាក់ចុះគុណភាពដី:

• ការការពារការធ្លាក់ចុះគុណភាពដី

4.1 គំនូសបច្ចេកទេសនៃបច្ចេកទេសនេះ

4.2 លក្ខណៈពិសេសនៃបច្ចេកទេស/ ពណ៌នាពីគំនូរបច្ចេកទេស

Layout of small level bench terraces. After every third or fourth terrace a lateral drainage channel is built. Later, protective grass cover is established on the risers (right).

Technical knowledge required for field staff / advisors: moderate

Technical knowledge required for land users: moderate

Main technical functions: control of dispersed runoff: retain / trap, reduction of slope angle, reduction of slope length

Secondary technical functions: control of concentrated runoff: impede / retard, increase of infiltration, increase / maintain water stored in soil

Vegetative measure: grass on risers (optional)
Vegetative material: G : grass

Vegetative measure: Vegetative material: G : grass

Vegetative measure: Vegetative material: G : grass

Vegetative measure: Vegetative material: G : grass

Terrace: bench level
Vertical interval between structures (m): 0.4
Spacing between structures (m): 0.3
Height of bunds/banks/others (m): 0.4
Width of bunds/banks/others (m): 1.5
Length of bunds/banks/others (m): 25

Structural measure: drainage channels
Depth of ditches/pits/dams (m): 0.1
Width of ditches/pits/dams (m): .02 - .3

Construction material (earth): It is the earth dug in situ.

Lateral gradient along the structure: 0%

Vegetation is used for stabilisation of structures.

4.3 ព័ត៌មានទូទៅដែលពាក់ព័ន្ធនឹងការគណនាធាតុចូល និងថ្លៃដើម

ផ្សេងៗ/ រូបិយប័ណ្ណជាតិ (បញ្ជាក់):

Baht

កំណត់អត្រាប្តូរប្រាក់ពីដុល្លាទៅរូបិយប័ណ្ណតំបន់ (បើទាក់ទង)៖ 1 ដុល្លារ =:

37,0

4.4 សកម្មភាពបង្កើត

	សកម្មភាព	ប្រភេទវិធានការ	ពេលវេលា
1.	Layout is simply by eye and best judgment.	រចនាសម្ព័ន្ធ
2.	Work begins on the lower part of the slope, and then progresses uphill.	រចនាសម្ព័ន្ធ
3.	Farmers cut into the hillside with hoes and drag the soil down to formthe risers and level the terrace beds.	រចនាសម្ព័ន្ធ
4.	Risers are then stabilised/compacted by hoe.	រចនាសម្ព័ន្ធ

4.5 ថ្លៃដើម និងធាតុចូលដែលត្រូវការសម្រាប់ការបង្កើតបច្ចេកទេស

	បញ្ជាក់ពីធាតុចូល	ឯកតា	បរិមាណ	ថ្លៃដើមក្នុងមួយឯកតា	ថ្លៃធាតុចូលសរុប	% នៃថ្លៃដើមដែលចំណាយដោយអ្នកប្រើប្រាស់ដី
កម្លាំងពលកម្ម	Labour	ha	1,0	270,0	270,0	100,0
សម្ភារៈ	Tools	ha	1,0	5,0	5,0	100,0
ថ្លៃដើមសរុបក្នុងការបង្កើតបច្ចេកទេស					275,0

មតិយោបល់:

Duration of establishment phase: 12 month(s)

4.6 សកម្មភាពថែទាំ

	សកម្មភាព	ប្រភេទវិធានការ	ពេលវេលា/ ភាពញឹកញាប់
1.	Weeds and grasses are removed and piled outside the cropping area.	សារពើរុក្ខជាតិ
2.	Land is prepared through tillage by hoe.	រចនាសម្ព័ន្ធ
3.	Risers are built up/repaired where necessary.	រចនាសម្ព័ន្ធ
4.	Terrace beds may need levelling.	រចនាសម្ព័ន្ធ

4.7 កំណត់ថ្លៃដើមសម្រាប់ការថែទាំ/ សកម្មភាពរបស់បច្ចេកទេស (ក្នុងរយៈពេលមួយឆ្នាំ)

	បញ្ជាក់ពីធាតុចូល	ឯកតា	បរិមាណ	ថ្លៃដើមក្នុងមួយឯកតា	ថ្លៃធាតុចូលសរុប	% នៃថ្លៃដើមដែលចំណាយដោយអ្នកប្រើប្រាស់ដី
កម្លាំងពលកម្ម	Labour	ha	1,0	45,0	45,0	100,0
សម្ភារៈ	Tools	ha	1,0	45,0	45,0	100,0
ថ្លៃដើមសរុបសម្រាប់ការថែទាំដំណាំតាមបច្ចេកទេស					90,0

មតិយោបល់:

Clearing of forest is not included in the cost calculations. This calculation is based on a typical slope of approximately 20%, with risers of 0.2 m in height and beds 1.0 m wide. Maintenance costs include basic land preparation (for annual crops) or weeding etc for perennial crops.

4.8 កត្តាសំខាន់បំផុតដែលមានឥទ្ធិពលដល់ការចំណាយ

ពណ៌នាពីកត្តាប៉ះពាល់ចម្បងៗទៅលើថ្លៃដើម:

The slope factor affects most because it will require longer time to construct.

5.1 អាកាសធាតុ

5.2 សណ្ឋានដី

មតិយោបល់ និងបញ្ចាក់បន្ថែមអំពីសណ្ឋានដី :

Slopes on average: Also steep (ranked 3)
Soil fertility: Low (ranked 1) and very low (ranked 2)
Soil drainage/infiltration: Medium (ranked 1, good drainage though being cleyey soil) and good (ranked 2)
Soil water storage capacity: Medium and low (both ranked 1)

5.3 ដី

5.6 លក្ខណៈនៃអ្នកប្រើប្រាស់ដីដែលអនុវត្តបច្ចេកទេស

សូមបញ្ជាក់ពីលក្ខណៈពាក់ព័ន្ធផ្សេងទៀតអំពីអ្នកប្រើប្រាស់ដី:

Population density: < 10 persons/km2
6% of the land users are rich and own 35% of the land.
24% of the land users are average wealthy and own 40% of the land.
60% of the land users are poor and own 20% of the land.
10% of the land users are poor and own 5% of the land.
Off-farm income specification: farmers spend much time as farm labourers on other farms or in food processing factories - and some have jobs at construction sites, for example road building
Level of mechanization: Manual work (ranked 1) and animal traction (ranked 2)
Market orientation: Commercial/market (ranked 1, tea, coffee, vegetable and flower production) and subsistence (ranked 2)

5.7 ទំហំផ្ទៃដីជាមធ្យមនៃដីផ្ទាល់ខ្លួន ឬជួលគេដែលបានអនុវត្ត​បច្ចេកទេស

5.8 ភាពជាម្ចាស់ដី កម្មសិទ្ធប្រើប្រាស់ដី និងកម្មសិទ្ធប្រើប្រាស់ទឹក

ភាពជាម្ចាស់ដី:

• រដ្ឋ

កម្មសិទ្ធិប្រើប្រាស់ដី:

• ឯកជន

• illegal (initially) (see Annex T3)

• illegal (initially) (see Annex T3)

6.1 ផលប៉ះពាល់ក្នុងបរិវេណអនុវត្តបច្ចេកទេសដែលកើតមាន

ផលប៉ះពាល់លើសេដ្ឋកិច្ចសង្គម

ផលិតផល

ចំណូល និងថ្លៃដើម

ផលប៉ះពាល់ទៅលើសេដ្ឋកិច្ចសង្គមផ្សេងៗ

ផលប៉ះពាល់ទៅលើវប្បធម៌សង្គម

ផលប៉ះពាល់ទៅលើអេកូឡូស៊ី

វដ្តទឹក/លំហូរ

ដី

ជីវចម្រុះ៖ ដំណាំ, សត្វ

6.2 ផលប៉ះពាល់ក្រៅបរិវេណអនុវត្តបច្ចេកទេសដែលកើតមាន

6.4 ការវិភាគថ្លៃដើម និងអត្ថប្រយោជន៍

តើផលចំណេញ និងថ្លៃដើមត្រូវបានប្រៀបធៀបគ្នាយ៉ាងដូចម្តេច (ទស្សនៈរបស់អ្នកប្រើប្រាស់ដី)?

តើផលចំណេញ និងការថែទាំ/ ជួសជុលត្រូវបានប្រៀបធៀបគ្នាយ៉ាងដូចម្តេច (ទស្សនៈរបស់អ្នកប្រើប្រាស់ដី)?

6.5 ការទទួលយកបច្ចេកទេស

បើអាច សូមបញ្ជាក់ពីបរិមាណ (ចំនួនគ្រួសារ និង/ ឬតំបន់គ្របដណ្តប់):

500

ក្នុងចំណោមគ្រួសារទាំងអស់ដែលអនុវត្តបច្ចេកទេស តើមានប៉ុន្មាន​គ្រួសារ​ដែល​ចង់​ធ្វើ​ដោយ​ខ្លួន​ឯង ដោយមិន​ទទួល​បាន​សម្ភារៈ​លើក​​ទឹកចិត្ត/​ប្រាក់ឧបត្ថម្ភ?​:

• 50-90%

មតិយោបល់:

10% of land user families have adopted the Technology with external material support

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

Comments on acceptance with external material support: estimates

90% of land user families have adopted the Technology without any external material support

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

Comments on spontaneous adoption: estimates

There is a little trend towards spontaneous adoption of the Technology

Comments on adoption trend: There is a little growing spontaneous adoption: for example in the Mae Salong area farmers accept these terraces increasingly, but fruit growers tend to prefer intermittent ‘orchard terraces’ - terraces spaced apart, with 5 m or more of undisturbed land in-between. The benches in this case are backward sloping.

6.7 ភាពខ្លាំង/ គុណសម្បត្តិ/ ឱកាសនៃបច្ចេកទេស

ភាពខ្លាំង/ គុណសម្បត្តិ/ ឱកាសនៅកន្លែងរបស់អ្នកប្រើប្រាស់ដី
For facilitating picking of tea leaves
For using as farm path
For increasing soil fertility

ភាពខ្លាំង/ គុណសម្បត្តិ/ ឱកាស​ ទស្សនៈរបស់បុគ្គលសំខាន់ៗ
A relatively cheap method of terracing which makes cultivation easier and provides erosion control How can they be sustained / enhanced? Should be further promoted by extension agencies (in areas where cultivation is officially allowed). Allocation of official title deeds to land will speed up the adoption automatically.
For improving/maintaining soil fertility
For increasing the yield of tea leaves How can they be sustained / enhanced? Inspecting the field during/after rain to see how efficient they are in conserving soil and water and repair as needed
For using as farm path
Compared with normal bench terraces, construction does not bring infertile subsoil to the surface.

6.8 ភាពខ្សោយ/ គុណវិបត្តិ/ ហានិភ័យនៃបច្ចេកទេស និងវិធីសាស្ត្រដោះស្រាយ

ភាពខ្សោយ/ គុណវិបត្តិ/ ហានិភ័យ ទស្សនៈរបស់អ្នកប្រើប្រាស់ដី	តើបច្ចេកទេសទាំងនោះបានដោះស្រាយបញ្ហាដូចម្តេច?
Farmers have to pay for its construction.	The government may be able to help in the future.

ភាពខ្សោយ/ គុណវិបត្តិ/ ហានិភ័យ ទស្សនៈរបស់អ្នកចងក្រងឬបុគ្គលសំខាន់ៗ	តើបច្ចេកទេសទាំងនោះបានដោះស្រាយបញ្ហាដូចម្តេច?
Does not lend itself to mechanisation: the terrace beds are narrow and only suited to hand hoeing.	Teach farmers techniques of composting and/or mulching.
In this situation grasses and weeds are merely piled and burned rather than being used to improve soil fertility

7.2 ឯកសារយោងដែលបានចេញផ្សាយ

ចំណងជើង អ្នកនិពន្ធ ឆ្នាំ ISBN:

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