The impact of soil erosion in the Upper Blue Nile on downstream reservoir sedimentation /
- 出版日期：c2014.
- 语种：eng
- 出版者：CRC Press/Balkema,
- 页数：160 p. :
- 出版地：Leiden, The Netherlands :
- 第一责任说明：by Yasir Salih Ahmed Ali.
- 尺寸：25 cm.
- 分类号：a396
- ISBN：9781138027428(pbk.) :
MARC全文
02h0068496 20150902103017.0 150831s2014 ne ab frbm |000|||eng d 9781138027428(pbk.) : CNY508.82 BTCTA eng STF OCLCO ; CDX ; BTCTA ; YDXCP ; BDX ; UKMGB ; CNNGL eng eng ; dut f-et--- ; f-sj--- S625.B45 A45 2014 627.8/6 23 a396 Ali, Yasir Salih Ahmed, author. The impact of soil erosion in the Upper Blue Nile on downstream reservoir sedimentation / by Yasir Salih Ahmed Ali. Leiden, The Netherlands : CRC Press/Balkema, c2014. 160 p. : ill. (some col.), maps (some col.) ; 25 cm. atext 2rdacontent aunmediated 2rdamedia avolume 2rdacarrier About the auther in English and Arabic. bPh.D. ; cDelft University of Technology ; d2014. Includes bibliographical references (p. 149-159) Population growth in the Blue Nile Basin has led to fast land-use changes from forest to agricultural land, which resulted in speeding up the soil erosion processes producing highly negative impacts on the local soil fertility and agricultural productivity. The eroded sediment is transported downstream by water and sinks in the lower basin where it significantly reduces reservoir storage and irrigation canals capacity. The only effective solution to mitigate the sedimentation problem is to limit the sediment inputs from upstream by locally implementing erosion control practices. However, given the vastness and remoteness of the involved areas, this first requires the knowledge of the most critical zones. The book identifies the sources of the sediment depositing in the Lower Blue Nile Basin and quantifies the amounts involved providing essential information for the planning and implementation of any interventions aiming at reducing soil erosion. The methods used consist of extensive field work covering most of the basin, watershed, hydrodynamic and morphodynamic modelling and, for the first time, the mineralogical analysis of the sediment at the sources and sinks. The method is successful in indentifying the areas providing most of the transported sediment, where it is recommended to start with erosion control practices. Text is in English, summary in English and Dutch. Soil erosion Blue Nile River Valley (Ethiopia and Sudan) aCN b010001 010001 396 AL4 gljx1502 h1 ; rCNY508.82