وصف موجز لأفضل ممارسة

Bench terracing is a soil conservation practice consisting of a series of level or nearly level strips running across a slope following the contour lines at certain vertical intervals. The level strips (terraces) supported by steep banks or risers made of earth or rocks, are used for cultivation. Terraces reduce both the amount and velocity of water moving over the soil surface, thereby reducing soil erosion.|

الموقع

Nangkor gewog (Zhemgang district) and Phuentsholing gewog (Chhukha district).

إذا كان للموقع حدود معروفة جيدًا، حدد امتداده بالهكتارات:

65.0

تقدير عدد السكان المقيمين في الموقع:

7000.0

وصف موجز للبيئة الطبيعية ضمن الموقع المحدد.

Nangkor gewog has subtropical to warm temperate climatic conditions with upper reaches being cool temperate. Phuentsholing gewog is subtropical with hot and humid conditions and very high rainfall averaging about 4,500 mm annually.|
Nangkor gewog is characterized by rugged terrain and steep slopes with pockets of gently sloping lands. The elevation varies from 280m in the south to as high as 4,600m asl. Phuentsholing gewog starts from the Great Indian Plains and foothills at about 180m and climbs upto 2,400m asl at the highest point. However, much of the human activity and settlements occur in the lower zone below 1,000 m asl.|
The soils at Nangkor are generally shallow to moderately deep dark greyish brown sandy loam soils with bedded quartzites, gneiss and granite as main rock types. Phuentsholing has moderately shallow to deep greyish brown silty loam to silty clay loam soils with variegated phyllite, dolomite & conglomerate as main rock types.|

الظروف الاجتماعية والاقتصادية السائدة للسكان الذين يقطنون الموقع و/أو قريبًا منه

The main livelihood source of the rural communities of Nangkor and Phuentsholing is crop agriculture with supplementary livelihood from livestock production. The farmers also earn some cash income from off-farm activities such as construction activities.
Nangkor gewog is remote with poor road network and public facilities. Development activities is limited and majority of the farmers are poor. Phuntsholing gewog has good access to market and other public facilities. Most of the farmers are self sufficient.
In Nangkor gewog, 4.2% of the households own less than 1 acre of agricultural land, 36.6% from 1 to 5 acres, 34.7% from 5 to 10 acres, and 24.5% more than 10 acres. In Phuentsholing gewog, 6.5% of the farm households own less than 1 acre of agricultural land, 34% from 1 to 5 acres, 33% from 5 to 10 acres and 26.5% above 10 acres|

على أساس أي من المعايير و/أو المؤشر (المؤشرات) (التي لا تتعلق بالاستراتيجية) تم اعتبار الممارسات والتقنيات المناسبة على أنها "أفضل"؟

The proposed practice has been considered 'best' because of its suitability and effectiveness in controlling soil erosion in Bhutan's mountainous terrain.

المشكلات الرئيسية التي تمت معالجتها من خلال أفضل الممارسات

1) Soil erosion on moderately steep terrain (upto 30 degree).
2) Ease of workability by construction of flat or partially flat terraces
3) Moisture stress problems through retention of runoff water

حدد المشكلات الخاصة بتدهور التربة والتي تمت معالجتها من خلال أفضل الممارسات

Mountainous terrain, heavy rainfall and loose soil structure make Bhutan's agricultural landscapes highly vulnerable to soil erosion and degradation. The reported practice to a good extent addresses soil conservation and sustainable farming needs in Bhutan's mountainous terrain.|

حدد أهداف أفضل الممارسات

Control soil erosion, maintain soil fertility, promote intensive cultivation and increase the ease of workability - which all contribute to increased and sustainable crop production.|

وصف مختصر للأنشطة الرئيسية، ,وفق الأهداف

Farmers training for developing bench-terraces and supply of tools and raw materials to the trained farmers with priority to those who belong to poor households. Demonstration plots have also been established for training and extension purposes.

وصف موجز للتقنية ومواصفاتها الفنية

Bench terracing is a soil conservation practice consisting of a series of level or nearly level strips running across a slope following the contour lines at certain vertical intervals. The level strips (terraces) supported by steep banks or risers made of earth or rocks, are used for cultivation. Terraces reduce both the amount and velocity of water moving over the soil surface, thereby reducing soil erosion. Terracing permits more intensive cropping than would otherwise be possible. Furthermore, it also increases the ease of workability because of flat terraces.|
Bench terracing is not recommended beyond 30 degree slope. Prior to terracing, slope of the proposed site needs to be determined. Based on the slope gradient, the terrace/vertical interval is marked. From the marked  terrace/vertical interval, contour lines are established using an A-frame. After laying out the contour lines, cut and fill areas of the terrace are clearly demarcated. From the cut area, topsoil is completely removed and piled it in one of the corners. Then using the subsoil, the terrace leveling is done. After leveling, the saved topsoil is spread over the surface of the terraces. This is done mainly to put back the fertile topsoil on top of the terraces so that farmers can immediately grow crops after terracing without much decline in yield. After this, the terraces need to be mulched properly to prevent soil erosion by reducing the impacts of rain water. In order to further stabilize the terrace risers, plantation of fodder grass slips are also encouraged along the risers.

اسم وعنوان المؤسسة التي تقوم بتطوير التقنية

National Soil Services Centre, Department of Agriculture (Ministry of Agriculture and Forests)|Post Box 907, Semtokha, Thimphu, Bhutan

هل تم تطوير التقنية بالشراكة؟

كلا

حدد إطار العمل الذي تم من خلاله تطوير التقنية

• المبادرة الوطنية - التي تقودها الحكومة
• المبادرة المرتكزة على البرنامج/المشروع

هل ساهمت مشاركة الجهات المعنية المحلية، بما في ذلك منظمات المجتمع المدني في تعزيز عملية تطوير التقنية؟

نعم

في حالة الإجابة بنعم، اسرد الجهات المعنية المحلية المشاركة:

Local stakeholders include the local communities, agricultural field extension agents and district agriculture staff.|

بالنسبة للجهات المعنية المدرجة أعلاه، حدد دورهم في التصميم، والتقديم، واستخدام وصيانة التقنية، إن وجدت.

Local communities are the target beneficiaries. Their key roles are participation in training, adopt the best practice and provide feedback for further improvement. They are also responsible for scaling-up the implementation of the best practices into other areas to combat land degradation. The Gewog RNR (Renewable Natural Resource) staff's (Extension agent) main role is to provide hands on training, provide technical backstopping and monitor how the farmers are adopting the best practices. The district RNR staff prepare plans and mobilize resources to implement the best practices. They also provide field supervision and technical backstopping to the Gewog RNR staff for the successful implementation of the best practices. |

هل شارك السكان القاطنون في هذا الموقع و/أو قريبًا منه في تطوير التقنية؟

نعم

بواسطة ماذا؟:

• الاستشارة
• المناهج التشاركية

صف الآثار على المكان (التأثيران الرئيسيان حسب الفئة)

After terracing, it reduces soil erosion, maintains soil fertility and enables intensive agricultural production. Because of the flat terraces, it also increases the ease of workability.|
Improved livelihood as a result of more intensive agricultural production.
Terracing is labour intensive but once it been terraced, it is one of the best Sustainable Land Management (SLM) practices to combat land degradation especially in a rugged terrain like ours.|
Reduced land degradation

صف الأثرين الرئيسيين خارج الموقع (أي التي لا تحدث في الموقع ولكن في المناطق المحيطة)

Reduction in siltation of hydro-power dams (reservoirs) toward the lower reaches of the streams and rivers.
Minimal impact on the water biodiversity due to reduced sedimentation and eutrophication.

الأثر على التنوع البيولوجي والتغير المناخي

اشرح الأسباب:

The practice is expected to have a positive impact on climate change mitigation. It reduces soil erosion and maintains good ground cover through intensive crop cultivation. This enables to better sequester atmospheric carbon dioxide.
Better soil conservation measures will reduce the vulnerabilities of agricultural landscapes to climate-related disasters such as land degradation, flash floods and drought. Since Bhutan is characterized by rugged terrain, fragile geology and erratic climatic conditions, it is more vulnerable to flash floods, land slides and drought. The proposed practice will enable our farming communities to better cope with climate change impacts and enhance food security through prevention and mitigation of land degradation, intensive crop cultivation and conservation of soil moisture during dry spell which might be caused by erratic climatic events.|
Reduced sedimentation and eutrophication of water bodies are expected to help maintain healthy aquatic life.

هل تم إجراء تحليل التكلفة والعائد؟

هل تم إجراء تحليل التكلفة والعائد؟:

نعم

حدد:

The findings suggest that major costs include additional tools and labour, and this amounts to about BTN 15,000 (USD 330) to bench-terrace 0.41ha of land. Bench-terracing is labor-intensive and this can act as a major deterrant. The biggest benefits include the increase in cultivable land and crop production. 83% of the participating farmers reported increased crop yields after conversion to bench-terraces.|

هل تم نشر/تقديم التقنية إلى مواقع أخرى؟

هل تم نشر/تقديم التقنية إلى مواقع أخرى؟:

نعم

في حالة الإجابة بنعم، إلى أين؟:

Goshing and Bardo gewogs (Zhemgang district)|Lokchina and Bongo gewogs (Chukha district)|Lumang and Thrimshing gewogs (Trashigang district)

هل تم توفير الحوافز لتسهيل استخدام التقنية؟

هل تم توفير الحوافز لتسهيل استخدام التقنية؟:

نعم

في حالة الإجابة بنعم، حدد أنواع الحوافز:

• الحوافز المالية (على سبيل المثال، أسعار تفضيلية، مساعدات حكومية، إعانات مالية، منح نقدية، ضمانات القروض، إلخ)

هل يمكنك تحديد الظروف الرئيسية الثلاثة التي أدت إلى نجاح أفضل الممارسات/التقنية المقدمة؟

Cohesion between farmers and high level of interest among them to address the problems of unproductive land and soil erosion.
Bench terracing is done in a very participatory manner through involvement of farmers and field extension agents in design and construction of the terraces.
Highly motivated field extension agents and their positive interactions with the local farmers.

قابلية التكرار

في رأيك، هل يمكن تكرار أفضل الممارسات/التقنية التي اقترحتها في أماكن أخرى، وإن كان ذلك مع بعض التغيير؟:

نعم

إذا كانت الإجابة نعم، فعلى أي مستوى؟:

• المحلي
• ما دون الوطني
• الوطني
• دون الإقليمي
• الإقليمي
• الدولي

المتعلقة بالموارد البشرية

The practice demands additional labour, but this has been addressed through labour sharing within the community. It is done in a very participatory manner as a community rather than as an individual household. However with increased outmigration of local people into urban areas, the practice needs to be made more labour-efficient based on farmers' feedback and knowledge.|

المتعلقة بالجوانب المالية

The practice involves high cost in the initial stage but over the long term it involves low cost and high returns. So, persistent support is required, including some form of subsidies, in the initial stage.|

المتعلقة بالجوانب الفنية

The techniques involved are simple and easily understood by the farmers. Therefore, basic training programmes are sufficient to build requisite knowledge and skills of the farmers. This, in turn, has helped lower training and extension costs.|