水利学报2017，Vol.48Issue(2)：241-245,5.DOI:10.13243/j.cnki.slxb.20160215
岔巴沟淤地坝小流域重力侵蚀产沙量分析
Analysis on gravitational sediment yield in the check-dam controlled basins of Chabagou Watershed
摘要
Abstract
Gravitational sediment yield in the typical watersheds of the Loess Plateau is the study object in this paper.Six small watersheds controlled by check-dams are selected as the study basins.Sediment deposition data in the reservoirs of 1978-2001 are used as the total amount of erosion in the six basins.Chinese Soil Loss Equation mode (CSLE) is used to calculate erosion amount by water,and the gully erosion factor is added in this model.Through this method,gravitational sediment yield is distinguished from total erosion amount.The result shows that the percentages of gravitational sediment yield in total sediment yield in the six check-dam watersheds are about 0％,51.0％,54.1％,59.0％,65.0％ and 67.0％,respectively.It has significant linear positive correlation between gravity erosion sediment yield and the gully slope areas of steeper than 32°,and gully slope degree is the controlling factor of the gravitational erosion.Therefore reduce gully slope degree can significantly lower sediment yield in the watersheds of Loess Plateau.关键词
重力侵蚀产沙/黄土高原/岔巴沟流域/CSLEKey words
gravitational sediment yield/Loess Plateau/Chabagou watershed/CSLE分类
农业科技引用本文复制引用
杨吉山,姚文艺,郑明国,李莉..岔巴沟淤地坝小流域重力侵蚀产沙量分析[J].水利学报,2017,48(2):241-245,5.基金项目
国家自然科学基金项目(41271306) （41271306）
“十二五”国家科技支撑计划项目(2013BAC05B01) （2013BAC05B01）
国家重点研发计划水资源高效开发利用重点专项(2016YFC040240201) （2016YFC040240201）
