1.2 تفاصيل الاتصال بالأشخاص الرئيسيين لمصدر المعلومات والمؤسسات المشاركة في تقييم وتوثيق التقنية

اسم المشروع الذي سهّل توثيق/تقييم التقنية (إذا كان ذلك على صلة)

Good Practices in Soil and Water Conservation - A contribution to adaptation and farmers ́ resilience towards climate change in the Sahel (GIZ)

اسم المؤسسة (المؤسسات) التي سهلت توثيق/تقييم التقنية (إذا كان ذلك على صلة)

Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH (GIZ) - ألمانيا

1.3 الشروط المتعلقة باستخدام البيانات الموثقة من خلال WOCAT

متى تم تجميع البيانات (ميدانيا)؟:

01/07/2012

يوافق جامع المعلومات والشخص (لاشخاص) الرئيسي لمصدر المعلومات على الشروط المتعلقة باستخدام البيانات الموثقة من خلال WOCAT:

نعم

1.4 إعلان بشأن استدامة التقنية الموصوفة

هل التقنية الموصوفة هنا تمثل مشكلة فيما يتعلق بتدهور الأراضي، بحيث لا يمكن إعلانها تقنية مستدامة لإدارة الأراضي؟:

كلا

2.1 وصف مختصر للتقنية

تعريف التقنية:

Grass strips slow down runoff, increase infiltration and retain sediment, thus increasing crop production.

2.2 وصف تفصيلي للتقنية

الوصف:

Grass strips measuring 0.80 m to 1 m wide are planted 20 to 80 m apart on low-gradient terrain. Local grasses (for example, Andropogon gayanus, Cymbopogon schoenateus and Vetivera nigritiana) are sown or planted (plantlets) at the start of the rainy season. Like stone bunds, grass strips are planted along the natural contour of the land to slow down runoff, increase infiltration and retain sediment. Grass strips get bigger as sediment builds up, which maintains their capacity to retain water, unlike mechanical structures (stone bunds and dikes).
The species of grass are chosen according to what the farmers want to use them for (straw, hay, mat weaving, roofing, construction of straw granaries, brooms, etc.). In cattle and sheep raising areas, the use of fodder plants can increase interest in this technique and ensure wider acceptance. It is recommended that the development of grass strips be combined with assisted natural regeneration (woody species) or the planting of trees.

Designed as an erosion control measure, grass strips slow down runoff in the event of heavy rain. They distribute rainwater more evenly over the land and improve infiltration which is particularly important when there are dry spells in the rainy season. Sediment builds up behind the grass strips, thereby reducing the erosion of fertile soil layers. The roots of the plants bind the soil and hold it in place. Although the vegetation growing in the strips competes with the crops to some extent for water, the overall effect on yields is positive. Crops are also protected from wind erosion. Thanks to the vegetation cover they provide, grass strips contribute to lowering soil temperature.
Like contour stone bunds, grass strips reduce the harmful effects of heavy rain and violent downpours, events that are expected to increase as a result of climate change.
Compared with plots without grass strips, millet yields were 50 kg per hectare per year higher, and straw yields 125 kg higher on plots with grass strips. Yields can be substantially improved by combining grass strips with the application of organic fertiliser, mulch or pen manure. The best results, an average increase of 280 kg of millet grain per hectare (370 kg of straw per hectare), were achieved by combining them with mulching and pen manuring. Grass strips therefore improve yields of cereals and forage for livestock (straw and grass growing on the strips).
Increased crop output increases household food security and improves livestock feeding. The straw cut on the grass strips can also be used for other purposes (fencing and roofing). It is also a source of income, as traditional products made with straw, such as woven mats, can be sold.

Grass growth tends to be patchy, and resowing is required several times to fill in the gaps in the strip. In order to protect the grass strips from grazing animals during the first year, it is recommended that the area be monitored, which requires strict control over the village herds and flocks and those of nomadic livestock keepers.
Some grasses tend to invade crop fields. It is therefore important to control them by cutting them down before they flower and to tend the strips regularly, straightening and cutting back the edges.
Any dead plants in the grass strips must be regularly replaced. Grass strips are more likely to be maintained if they are economically profitable, for example, if they produce hay for livestock or their output can be sold as forage or construction material.

It is a technique designed mainly for cropland, but can also be used on rangeland, provided that the plants are protected when the grass strips are put in place. Grass strips are suitable for areas in the Sahel and the Sudan with rainfall ranging between 400 and 1,000 mm/year and gently sloping terrain (< 2%). Ecological units that benefit from the implementation of this measure include dune land, pediments and plains (highland pediments). Grass strips are particularly appropriate for non-stony land in areas with higher rainfall levels.

2.3 صور التقنية

2.5 البلد/المنطقة/المواقع التي تم تنفيذ التقنية فيها والتي يغطيها هذا التقييم

2.6 تاريخ التنفيذ

في حالة عدم معرفة السنة بالتحديد، يرجى الإشارة إلى التاريخ التقريبي:

• منذ 10-50 سنة

2.7 إدخال التقنية

حدد كيف تم إدخال التقنية:

• من خلال المشاريع/ التدخلات الخارجية

التعليقات (نوع المشروع، الخ):

developed, implemented and disseminated as part of projects and programmes undertaken from the 1980s onwards to combat desertification and improve natural resource management. Implemented by GIZ (German Federal Enterprise for International Cooperation), PDRT (Projet de développement rural de Tahoua - Tahoua Rural Development Project), PASP (Projet de protection intégrée des ressources agro-sylvo-pastorales Tillabéri-Nord - Project for the Integrated Protection of Agricultural, Forest and Rangeland Resources in Tillabéri-Nord), and PATECORE (project for land development and resource conservation in Plateau Central Burkina Faso)

3.1 الغرض الرئيسي ( الأغراض الرئيسية) للتقنية

• الحد من تدهور الأراضي ومنعه وعكسه

3.2 نوع (أنواع) استخدام الأراضي الحالية حيث يتم تطبيق التقنية

التعليقات:

Major land use problems (compiler’s opinion): soil erosion by water and wind, fertility decline

3.3 مزيد من المعلومات حول استخدام الأراضي

إمدادات المياه للأرض التي يتم تنفيذ التقنية عليها:

• بعلية

عدد مواسم الزراعة في السنة:

• 1

حدد:

Longest growing period in days: 120, Longest growing period from month to month: August to October

كثافة الثروة الحيوانية (إذا كانت ذات صلة):

1-10 LU /km2

3.4 مجموعةالإدارة المستدامة للأراضي التي تنتمي إليها هذه التقنية

• الرعي وإدارة المراعي
• التدابير المتقاطعة للمنحدرات

3.5 انتشار التقنية

حدد انتشار التقنية:

• منتشرة بالتساوي على مساحة

إذا كانت التقنية منتشرة بالتساوي على منطقة ما، فحدد المنطقة التقريبية المغطاة:

• 100-10 كم2

التعليقات:

After three seasons of promoting this technique, grass strips had been established on a total area of 4674 hectares (sometimes in combination with other measures). Over half of the improved land is located in the Filingué area (2587 hectares), followed by Ouallam with 1042 hectares. However, only small areas were improved with grass strips in Tillabéri and Tera (228 hectares and 817 hectares respectively), where acceptance of this technique was low

3.6 التدابير التقنية في مجال إلادارة المستدامة للأراضي

التعليقات:

Type of vegetative measures: aligned: -contour

3.7 الأنواع الرئيسية من تدهور الأراضي التي تناولتها التقنية

التعليقات:

Main causes of degradation: soil management (Unadapted landuse methods, reduced or abandoned fallow periods), crop management (annual, perennial, tree/shrub) (Neglect of fallow periods and crop rotation), droughts (due to heat waves), population pressure (rapidly growing population increasing pressure on land), land tenure (insecure access to land and collectively managed communal land), poverty / wealth (very poor population)

Secondary causes of degradation: deforestation / removal of natural vegetation (incl. forest fires) (deforestation through overgrazing and fire wood collection), over-exploitation of vegetation for domestic use (firewood collection), overgrazing (cattle, sheep and goats), change in temperature (Climate change: heat waves), change of seasonal rainfall (more variable onset of rain), Heavy / extreme rainfall (intensity/amounts) (more variable and intensive rains), wind storms / dust storms (frequent storms), floods (due to intensive rain storms), labour availability (some migration of men to nearby cities), education, access to knowledge and support services (high level of illiteracy)

3.8 منع أو حد أو عكس تدهور الأراضي

تحديد هدف التقنية فيما يتعلق بتدهور الأراضي:

• منع تدهور الأراضي
• الحد من تدهور الأراضي

4.1 الرسم الفني للتقنية

4.2 المواصفات الفنية/شروحات الرسم الفني

Grass strips measuring 0.80 m to 1 m wide are planted 20 to 80 m apart on low-gradient terrain. Local grasses (for example, Andropogon gayanus, Cymbopogon schoenateus and Vetivera nigritiana) are sown or planted (plantlets) along the natural contour at the start of the rainy season.

Technical knowledge required for field staff / advisors: moderate
Technical knowledge required for land users: low
Main technical functions: control of dispersed runoff: retain / trap, control of dispersed runoff: impede / retard, control of concentrated runoff: retain / trap, control of concentrated runoff: impede / retard, improvement of ground cover, stabilisation of soil (eg by tree roots against land slides), increase in organic matter, increase in nutrient availability (supply, recycling,…), increase of infiltration, increase / maintain water stored in soil, water harvesting / increase water supply, sediment retention / trapping, sediment harvesting, reduction in wind speed, increase of biomass (quantity), promotion of vegetation species and varieties (quality, eg palatable fodder)
Secondary technical functions: increase of groundwater level / recharge of groundwater

Aligned: -contour
Vegetative material: T : trees / shrubs, G : grass
Number of plants per (ha): 200
Spacing between rows / strips / blocks (m): 20-80
Width within rows / strips / blocks (m): 0.8-1
Grass species: Andropogon gayanus, Cymbopogon schoenateus and Vetivera nigritiana

4.3 معلومات عامة بخصوص حساب المدخلات والتكاليف

عملة أخرى/ عملة وطنية (حدد):

CFA Franc

4.4 أنشطة التأسيس

	النشاط	نوع التدبير	التوقيت
1.	marking out the contour lines	نباتية
2.	making 10-15 cm deep furrows in which to plant the seeds or seedlings	نباتية
3.	sowing or planting 1 to 4 rows per strip.	نباتية

4.5 التكاليف والمدخلات اللازمة للتأسيس

	تحديد المدخلات	الوحدة	الكمية	التكاليف لكل وحدة	إجمالي التكاليف لكل مدخل	% من التكاليف التي يتحملها مستخدمو الأراضي
العمالة	labour	ha	1,0	46,7	46,7	100,0
المواد النباتية	seeds	ha	1,0	3,3	3,3	100,0
إجمالي تكاليف إنشاء التقنية					50,0

4.6 الصيانة/الأنشطة المتكررة

	النشاط	نوع التدبير	التوقيت/الوتيرة
1.	resowing is required several times. Any dead plants in the grass strips must be regularly replaced.	نباتية
2.	Cutting down grasses which invade crop fields.	نباتية
3.	straightening and cutting back the edges	نباتية

4.8 أهم العوامل المؤثرة على التكاليف

قدم وصفا لأهم العوامل التي تؤثر على التكاليف:

Labour: 6 man-days per ha
• marking out the contour lines
• making 10-15 cm deep furrows in which to plant the seeds or seedlings
• sowing or planting 1 to 4 rows per strip. Upkeep: 2.5 man-days per year.
Other costs:
• grass seeds or seedlings
• equipment: water-tube level.

5.1 المناخ

5.2 طوبوغرافيا

5.3 التربة

5.4 توافر المياه ونوعيتها

5.5 التنوع البيولوجي

5.6 خصائص مستخدمي الأراضي الذين يطبقون التقنية

اذكر الخصائص الأخرى ذات الصلة لمستخدمي الأراضي:

Population density: 10-50 persons/km2
Annual population growth: 3% - 4% (mostly poor households below poverty line).
Off-farm income specification: men migrate temporarily or permanently to cities for off-farm income, women and men seasonally carry out paid farm work

5.7 متوسط مساحة الأرض المملوكة أو المستأجرة من قبل مستخدمي الأراضي الذين يطبقون التقنية

5.8 ملكية الأراضي، وحقوق استخدام الأراضي، وحقوق استخدام المياه

ملكية الارض:

• دولة
• فردية، لا يوجد سند ملكية

حقوق استخدام الأراضي:

• وصول مفتوح (غير منظم)

حقوق استخدام المياه:

• وصول مفتوح (غير منظم)

التعليقات:

traditional land use rights prevail. On fields individual land use rights, communal rights on pasture and forest land (collection of wood and other products (fruits, medicinal plants))

5.9 الوصول إلى الخدمات والبنية التحتية

6.1 الآثار التي أظهرتها التقنية في الموقع

الآثار الاجتماعية والاقتصادية

الإنتاج

الدخل والتكاليف

آثار اجتماعية واقتصادية أخرى

الآثار الاجتماعية والثقافية

الآثار الايكولوجية

دورة المياه / الجريان السطحي

التربة

الحد من مخاطر المناخ والكوارث

6.2 الآثار التي أظهرتها التقنية خارج الموقع

6.3 تعرض التقنية وحساسيتها لتغير المناخ التدريجي والظواهر المتطرفة/الكوارث المرتبطة بالمناخ (كما يراها مستخدمو الأراضي)

تغير مناخ تدريجي

تغير مناخ تدريجي

	الموسم	نوع التغير المناخي/ المتطرف	كيف تتعامل التقنية مع ذلك؟
درجة الحرارة السنوية		زيادة	جيدا

الظواهر المتطرفة / الكوارث المرتبطة بالمناخ

الكوارث الجوية

	كيف تتعامل التقنية مع ذلك؟
عاصفة ممطرة محلية	جيدا
عاصفة هوائية محلية	جيدا

الكوارث المناخية

	كيف تتعامل التقنية مع ذلك؟
جفاف	ليس جيدا

الكوارث الهيدرولوجية

	كيف تتعامل التقنية مع ذلك؟
فيضان عام (نهر)	جيدا

العواقب الأخرى المتعلقة بالمناخ

العواقب الأخرى المتعلقة بالمناخ

	كيف تتعامل التقنية مع ذلك؟
انخفاض فترة النمو	غير معروف

6.4 تحليل التكلفة والعائد

كيف يمكن مقارنة العوائد نسبة لتكاليف الإنشاء (من وجهة نظر مستخدمي الأراضي)؟

كيف تتم مقارنة العوائدمع كلفة الصيانة/التكاليف المتكررة (من وجهة نظر مستخدمي الأراضي)؟

6.5 اعتماد التقنية

التعليقات:

In the Tillabéri area, in northern Niger, the adoption of grass strips varies greatly from one place to another. After three seasons of promoting this technique, grass strips had been established on a total area of 4,674 hectares (sometimes in combination with other measures). Over half of the improved land is located in the Filingué area (2,587 hectares), followed by Ouallam with 1,042 hectares.
However, only small areas were improved with grass strips in Tillabéri and Tera (228 hectares and 817 hectares respectively), where acceptance of this technique was low.
In spite of good results in terms of increased production and soil improvement, grass strips have only been widely accepted in southern Niger (Maradi and Zinder). Farmers are of the view that grass strips could be confused with plot boundaries.
The availability of land in southern Niger may be another factor that facilitates acceptance of the measure is this area. Part of the plot is taken up by the grass strips, reducing the area left for growing crops. This hinders acceptance in areas where land is limited. The reduced crop-growing area is offset by better per-hectare grain, straw and hay yields. Certain grasses (such as Andropogon gayanus) have a harmful effect on nearby crops. The systematic exploitation of the grass strips as a source of straw or hay improves acceptance of the technique. In the Tillabéri area, in Niger, the adoption of grass strips varies greatly from one place to another. After three seasons of promoting this technique, grass strips had been established on a total area of 4,674 hectares (sometimes in combination with other measures). Over half of the improved land is located in the Filingué area (2,587 hectares), followed by Ouallam with 1,042 hectares. However, only small areas were improved with grass strips in Tillabéri and Tera (228 hectares and 817 hectares respectively), where acceptance of this technique was low. In spite of good results in terms of increased production and soil improvement, grass strips have only been widely accepted in southern Niger (Maradi and Zinder). Farmers are of the view that grass strips could be confused with plot boundaries. The availability of land in southern Niger may be another factor that facilitates acceptance of the measure is this area. Part of the plot is taken up by the grass strips, reducing the area left for growing crops. This hinders acceptance in areas where land is limited. The reduced crop-growing area is offset by better per-hectare grain, straw and hay yields. Certain grasses (such as Andropogon gayanus) have a harmful effect on nearby crops. The systematic exploitation of the grass strips as a source of straw or hay improves acceptance of the technique. At first, people living in the areas covered by the PDRT project were reluctant to establish grass strips. They considered them to be weeds with no place on their farmland. With time and exchange visits within the country, they began to accept the technique.

6.7 نقاط القوة / المزايا / الفرص التي توفرها التقنية

نقاط القوة/ المزايا/ الفرص من وجهة نظر جامع المعلومات أو غيره من الاشخاص الرئيسيين لمصدر المعلومات
reduce the harmful effects of heavy rain and violent downpours, events that are expected to increase as a result of climate change
improve rainwater harvesting and water retention in the soil
contribute to creating vegetation cover, which provides a habitat for biodiversity
contribute to lowering soil temperature and are also effective in reducing wind erosion. As the vegetation provides shelter from the wind, fine particles of soil accumulate behind the strips.
Increased crop output increases household food security and improves livestock feeding. The straw cut on the grass strips can also be used for other purposes (fencing and roofing). It is also a source of income, as traditional products made with straw, such as woven mats, can be sold.

6.8 نقاط ضعف / مساوىء / مخاطر التقنية وسبل التغلب عليها

نقاط الضعف/ المساوىء/ المخاطر من وجهة نظر جامع المعلومات أو غيره من الاشخاص الرئيسيين لمصدر المعلومات	كيف يمكن التغلب عليها؟
Grass growth tends to be patchy, and resowing is required several times to fill in the gaps in the strip. Strips with bare patches are not effective in retaining water, and rilling can be caused by water gushing through the gaps.	The clumps must therefore be arranged in staggered rows and the strips made wide enough to prevent this problem.
With the use of certain types of grasses that grow in clumps, such as Andropogon grass, gaps are left between the tufts, and water spurting through these gaps can cause rilling.
In spite of good results in terms of increased production and soil improvement, grass strips have only been widely accepted in southern Niger (Maradi and Zinder). Farmers are of the view that grass strips could be confused with plot boundaries.
Certain grasses (such as Andropogon gayanus) have a harmful effect on nearby crops.
Part of the plot is taken up by the grass strips, reducing the area left for growing crops. This hinders acceptance in areas where land is limited.

7.1 طرق جمع/مصادر المعلومات

7.2 المراجع للمنشورات المتاحة

العنوان، المؤلف، السنة، النظام القياسي الدولي لترقيم الكتب ISBN:

Good Practices in Soil and Water Conservation. A contribution to adaptation and farmers´ resilience towards climate change in the Sahel. Published by GIZ in 2012.

متاح من أين؟كم التكلفة؟:

http://agriwaterpedia.info/wiki/Main_Page