The Inter-Relationship Between Irrigation, Drainage and the Environment in the Aral Sea Basin - Bos, M.G. (Hrsg.)
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The irrigated area in the Aral Sea basin totals about 7. 5 million hectare. Part of the water supplied to this area is consumed by the irrigated crop; the remainder of the supplied water drains to the groundwater basin, to downstream depressions, or back to the rivers. During its use, however, this drained part of the water accumulates salts and chemicals. The disposal of this polluted water causes a variety of (environmental) problems. If the percentage consumed water of the total water supply to an irrigated area (the so-called overall consumed ratio) can be increased, less water needs to be…mehr

Produktbeschreibung
The irrigated area in the Aral Sea basin totals about 7. 5 million hectare. Part of the water supplied to this area is consumed by the irrigated crop; the remainder of the supplied water drains to the groundwater basin, to downstream depressions, or back to the rivers. During its use, however, this drained part of the water accumulates salts and chemicals. The disposal of this polluted water causes a variety of (environmental) problems. If the percentage consumed water of the total water supply to an irrigated area (the so-called overall consumed ratio) can be increased, less water needs to be drained. This alleviates part of the related (environmental) problems. Further, if the overall consumed ratio for the above 7. 5 million hectare is improved, less water needs to be diverted from the rivers. Hence, more water can flow towards the Aral Sea. As mentioned above, part of the non-consumed irrigation water drains to the groundwater basin. Commonly, the natural discharge capacity of this basin is insufficient to handle this imported water. As a result, the groundwater table rises towards the land surface causing waterlogging. In (semi-)arid zones this waterlogging triggers a soil salinity problem resulting to a significant reduction in crop yields. The artificial increase of the discharge capacity, and lowering of the groundwater table, solves the soil salinity problem.
  • Produktdetails
  • NATO Science Partnership, Sub-Series 2 22
  • Verlag: Springer Netherlands
  • 1996.
  • Seitenzahl: 256
  • Erscheinungstermin: 30. September 1996
  • Englisch
  • Abmessung: 241mm x 160mm x 18mm
  • Gewicht: 540g
  • ISBN-13: 9780792342588
  • ISBN-10: 0792342585
  • Artikelnr.: 21875256
Inhaltsangabe
Foreword. The Interrelationship between Irrigation, Drainage and the Environment; M.G. Bos, R. van Aart. Environmental Benefits of Reducing Collector-Drain Runoff and Ways to Improve Irrigation Water Quality in the Rivers of the Aral Sea Basin; V. Berdjansky, I. Zaks. Planning for Drainage Development in the Aral Sea Basin; W.J. Ochs, L.K. Smedema. Impressions and Findings of a Study Tour to Karakalpakia in Central Asia; P. Wolff. Drainage Development in the Arid Zones of Central Asia; V. Dukhovny. Choice of Envelope Materials for the Rehabilitation of the Drainage Network in Uzbekistan; N. Goroshkov, A. Galustyan. The Construction and Effectiveness of Combined Drainage Systems; P. Umarov. The Contribution of Horizontal Subsurface Drainage to Solving the Aral Sea Economic and Environmental Problem; D.B. Chalcroft. Flow Through Wetlands of Horizontal Subsurface Drainage in Rice Irrigation Systems of Kazakhstan; A.A. Dzhumabekov. Environmental and Economic Benefit of