Your search found 6 records
1 Martius, C.; Lamers, J.; Wehrheim, P.; Schoeller-Schletter, A.; Eshchanov, R.; Tupitsa, A.; Khamzina, A.; Akramkhanov, A.; Vlek, P. L. G. 2004. Developing sustainable land and water management for the Aral Sea Basin through an interdisciplinary approach. In Seng, V.; Craswell, E.; Fukai, S.; Fischer, K. (Eds.), Water in agriculture: Proceedings of a CARDI International Conference “Research on Water in Agricultural Production in Asia for the 21st Century” Phnom Penh, Cambodia, 25-28 November 2003. Canberra, Australia: ACIAR. pp.45-60.
Land management ; Water management ; Ecology ; Research projects ; Natural resources ; Resource management ; Agricultural production / Central Asia / Aral Sea
(Location: IWMI-HQ Call no: 631.7.2 G000 SEN Record No: H034946)
2 Worbes, M.; Botman, E.; Khamzina, A.; Tupitsa, A.; Martius, C.; Lamers, J. P. A. 2006. Scope and constraints for tree planting in the irrigated landscapes of the Aral Sea Basin: case studies in Khorezm Region, Uzbekistan. Bonn, Germany: Center for Development Research. 49p. (ZEF Discussion Papers on Development Policy 112)
Lakes ; Agroforestry ; Trees ; Windbreak trees ; Forests ; Legal aspects ; Irrigated land ; Farmers attitudes ; Legal aspects / Central Asia / Uzbekistan / Aral Sea Basin / Khorezm
(Location: IWMI HQ Call no: e-copy only Record No: H041351)
http://www.zef.de/fileadmin/webfiles/downloads/zef_dp/zefdp_112.pdf
https://vlibrary.iwmi.org/pdf/H041351.pdf
https://vlibrary.iwmi.org/pdf/H041351.pdf
3 Qadir, Manzoor; Martius, C.; Khamzina, A.; Lamers, J. P. A. 2010. Harnessing renewable energy from abandoned salt-affected lands and saline drainage networks in the dry areas. In El-Beltagy, A.; Saxena, M. C. (Eds.). Sustainable development in drylands: meeting the challenge of global climate change. Proceedings of the Ninth International Conference on Development of Drylands, Alexandria, Egypt, 7-10 November 2008. Theme 8 - Reducing greenhouse gas emission through harnessing renewable energy in the dry areas. Giza, Cairo, Egypt: International Dryland Development Commission (IDDC). pp.836-845.
(Location: IWMI HQ Call no: e-copy only Record No: H043582)
(4.30 MB)
4 Karimov, Akmal; Molden, David; Platonov, Alexander; Khamzina, A.. 2011. From improved water accounting to increased water productivity in the Fergana Valley. In ICID. 21st Congress on Irrigation and Drainage: Water Productivity towards Food Security, Tehran, Iran, 15-23 October 2011. New Delhi, India: ICID. pp.141-153. (ICID Transaction No. 30-A)
Water resources ; Water accounting ; Water productivity ; River basins ; Upstream ; Downstream ; Water depletion ; Water conservation ; Water use ; Evaporation / Central Asia / Uzbekistan / Fergana valley / Syrdarya River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H044425)
http://www.irncid.org/GetFileArticles.aspx?FilePrm=8327_12461.pdf
https://vlibrary.iwmi.org/pdf/H044425.pdf
https://vlibrary.iwmi.org/pdf/H044425.pdf
(1.06 MB) (1.07MB)
Facing competition for limited water resources with domestic, industrial, hydropower and environmental uses, agriculture has to adapt to produce more food with less water. This paper proposes to apply water accounting procedure to identify the scope for water productivity improvement. The Fergana Valley, a highly productive area within the upstream of the Syrdarya River Basin, was selected to examine the proposed procedure. Significant non-productive depletions of water as evaporation at 31-34% of the available water were identified in the Fergana Valley. There is also flow to sinks and pollution in the downstream at 1-5% of the gross inflow due to the changes of the river flow regime, its quantity and quality, caused by the return flow from the irrigated land and the winter hydropower releases from the upstream. Total non-productive depletions of water at 4,200-5,200 million m3 (Mm3) were identified in the form of evaporation, flows to sinks, and pollution. Proper water saving technologies to reduce non-productive depletions will improve water productivity in the Fergana Valley and increase water availability for the downstream water uses.
5 Vlek, P. L. G.; Khamzina, A.; Azadi, H.; Bhaduri, A.; Bharati, Luna; Braimoh, A.; Martius, C.; Sunderland, T.; Taheri, F. 2017. Trade-offs in multi-purpose land use under land degradation. Sustainability, 9(12):1-19. [doi: https://doi.org/10.3390/su9122196]
Land degradation ; Land use ; Land conservation ; Multipurpose varieties ; Farmland ; Ecosystem services ; Integrated land management ; Water management ; Urbanization ; Biodiversity ; Farmers ; Stakeholders ; Soil moisture ; Climate change ; Carbon stock assessments ; Crop production
(Location: IWMI HQ Call no: e-copy only Record No: H048411)
(13.9 MB)
Land provides a host of ecosystem services, of which the provisioning services are often considered paramount. As the demand for agricultural products multiplies, other ecosystem services are being degraded or lost entirely. Finding a sustainable trade-off between food production and one or more of other ecosystem services, given the variety of stakeholders, is a matter of optimizing land use in a dynamic and complex socio-ecological system. Land degradation reduces our options to meet both food demands and environmental needs. In order to illustrate this trade-off dilemma, four representative services, carbon sinks, water storage, biodiversity, and space for urbanization, are discussed here based on a review of contemporary literature that cuts across the domain of ecosystem services that are provided by land. Agricultural research will have to expand its focus from the field to the landscape level and in the process examine the cost of production that internalizes environmental costs. In some situations, the public cost of agriculture in marginal environments outweighs the private gains, even with the best technologies in place. Land use and city planners will increasingly have to address the cost of occupying productive agricultural land or the conversion of natural habitats. Landscape designs and urban planning should aim for the preservation of agricultural land and the integrated management of land resources by closing water and nutrient cycles, and by restoring biodiversity.
6 Sekyi-Annan, E.; Tischbein, B.; Diekkruger, B.; Khamzina, A.. 2018. Performance evaluation of reservoir-based irrigation schemes in the upper east region of Ghana. Agricultural Water Management, 202:134-145. [doi: https://doi.org/10.1016/j.agwat.2018.02.023]
Irrigation schemes ; Performance evaluation ; Reservoir storage ; Water users ; Water demand ; Crop yield ; Water availability ; Soil moisture ; Seepage loss ; Transpiration / Ghana / Vea Irrigation Scheme / Bongo Irrigation Scheme
(Location: IWMI HQ Call no: e-copy only Record No: H048699)
(1.63 MB)
The design of relevant adaptation strategies for water users in irrigation schemes in the drylands of Sub-Saharan Africa requires up-to-date information about the current performance of these schemes in view of rapid changes in climate and land use, population growth, and competing water demands. Previous assessments focused primarily on field-level crop irrigation; however, information on the performance of schemes as a whole and considering multiple water users remains scarce. We examined two (one small- and one medium-scale) irrigation schemes shared by multiple users in the Upper East region of Ghana, including the water reservoir, water conveyance and distribution network, cropping fields, and the management entity. Multi-level performance indicators with relevance to water delivery and utilization as well as to agricultural production during two consecutive dry seasons were used. Technical factors, such as underutilized reservoir storage capacity and deteriorated conditions of water delivery infrastructure, strongly undermined the performance. In particular, the medium-scale irrigation scheme utilized less than 40% of total storage, whereas the small-scale scheme utilized about 70% of the storage. An examination of field-level water management practices suggests that an application efficiency of 58–68% is achievable in both schemes by improving the irrigation scheduling of the major crops. Overall system efficiency can be increased from 50% to 68% by reducing water conveyance network losses and by eliminating over-irrigation of fields. A holistic approach considering all competing water demands is needed for the performance evaluation of reservoir-based irrigation schemes in drylands.
Powered by DB/Text WebPublisher, from
