Сравнение практик

• Use of water resources
• Use of land resources
• Environmental protection

• Use of water resources
• Use of land resources

Страна: Туркменистан

Область: Ахалская

Страна: Казахстан

Область: Южно-Казахстанская

Район: Мактааральский

The site (9,000 ha, natural juniper woods) is located in the southwestern section of the Central Kopetdagh – a mountain and agro-environmental zone close to the border with Iran with the population of about 12,000 people engaged in agro-livestock production.

• Upstream (Ferghana) and midstream (Syr Darya) of the Syr Darya River
• Ebb occurrence of highly mineralized ground water

Дата начала: 01.01.2009

Дата окончания: 31.12.2010

Дата начала: 01.01.1965

Дата окончания: 31.12.1975

Natural juniper is cut down as heating timber, and water shortage is connected to poor precipitation. As a rule, villagers collect surface water flowing down the mountain slopes into the specially built tanks called “goudans”. In good years, goudans keep enough irrigation water for one season. However, during the last 5-6 years the goudans didn’t fill up due to insufficient rain.  Deforested slopes are unable to hold rainwater due to quick drain. Because of water deficiency, local population is gradually shifting away from agriculture and gardening and is increasingly focusing on livestock breeding. As a result of excessive use of pastures, fodder is not able to grow on the trodden land which leads to further erosion of mountain slopes.

Deterioration of reclamation situation: rising of ground water, land salination

Set of measures for collecting surface water drain on slope land (construction of a series of small dams; drip irrigation; planting out of juniper)

Technique and technology of land reclamation via a system of vertical drainage wells (VDW)

Actions:

• A series of small dams were built on the cleared slopes to increase soil infiltration by rain water (short-term solution). The dams built in gorges hold the water streams forming during heavy rain, thus, increasing soil moisture content which promotes vegetation restoration;
• A drip irrigation experiment (10 hectares of orchards) executed; further expansion up to 30 hectares is planned along with the reduction of livestock population;
• Planting out (transplanting) of juniper to enhance soil fixing and water retention;
• In Nokhur area, the initiative to develop vegetable and fruit farming supported to prevent pasture degradation, and necessary hydrogeological research conducted;
• In Kara Kum area, 8 new wells built and 6 existing wells repaired. Mechanical protection (reed mats and Saxaul saplings) set up on the territory of 27 hectares. 

Results:

• 17 dams of various size to prevent soil erosion built;
• fruit-trees planted on the area of 10 hectares;
• saplings of Turkmen juniper (“archa”) planted on the territory of 42 hectares to of restore juniper woods.

Actions:

A VDW system set up. Prior to its installation, the area was drained via a horizontal open-type drain-age network ineffective as to reducing the mass of salinized land.

Comprehensive VDW efforts significantly enhanced drainage.

However, currently due to the absence of a single organization responsible for VDW operation, maintenance and repair, the VDW systems recon-structed under World Bank and Asian Development Bank projects do not perform as effectively as ini-tially.

Results:

Financial and economic:
Increased cotton yields (from 10-15 up to 30-35 dt/ha).

Technical:
Successful response to land salination in 3 districts: ground water table steadily kept at 2-3 m depth leading to a sharp contraction of salinized land area.

Lessons learnt:

Enhanced methods of collecting surface drain and saving water are necessary to compensate the growing water shortage in order to allow communities to go back to agriculture and make cattle breeding more sustainable.  They are also necessary to stop the increasing degradation of mountain slopes.

Recommendations:

Technologies for application in the future:

• water collection methods, for example, mid-size terracing of slopes, boundary fencing and circular embankments, nursery holes and plant barriers, restoration of infiltration water dams on small streams; for the purpose of water blocking and moisture retention, to test cespitose crops, soil consolidation and the possibility of minimal/zero soil treatment;
• in order to reduce evaporation and loss of moisture, to use wind-shelter strips, dry and rarefied crops, non-plowing methods, crop rotation and consolidation;
• enhance drip irrigation systems to improve water management.

Lessons learnt:

In due time, the model proved useful and timely, as the country urgently needed to increase its cotton yields. The practice demonstrated high efficiency of VDW in combatting land salination.

Recommendations:

1. Establish a special VDW System Maintenance and Operation Department;
2. Build personnel capacity:
• Continual training of personnel in the Department and Provincial Hydrogeological and Land Reclamation Expedition;
• Drafting and distribution of training materi-als.

Domestic tools (outcomes of research by domestic R&D organizations)

Domestic tools (outcomes of research by domestic R&D organizations)

1. Затраты на внедрение: Высокие

2. Примерная стоимость капиталовложений на 1 га:

3. Затраты на поддержание и эксплуатацию: Высокие

4. Экспертная поддержка: Не требуется

1. Затраты на внедрение: Умеренные

2. Примерная стоимость капиталовложений на 1 га:

3. Затраты на поддержание и эксплуатацию: Высокие

4. Экспертная поддержка: Не требуется

Project title: Local-level capacity building and investment for sustainable management of land resources.

Project duration: 2009-2010.

Project goal and objectives: combating desertification and droughts.

Project beneficiaries: population of Garavul and Konegummez daikhan settlements in Bakharly Etrap (district) of Akhal Velayat (Region).

Project implementer: Ministry of Nature Protection of Turkmenistan and German Technical Cooperation Agency (GIZ).

http://www.turkmenistan.ru/?page_id=3&lang_id=ru&elem_id=17207&type=event&layout=print&sort=date_desc 

Reshetkina N.M. et al. “Vertical Drainage”, Moscow: Kolos, 1978. – 319 p.

SIC ICWC

SIC ICWC