Sediment Response to Erosive Environment Evolution of a Typical Watershed in the Loess Hilly Region in the Past 10 Years

doi:10.13870/j.cnki.stbcxb.2017.03.019

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Sediment Response to Erosive Environment Evolution of a Typical Watershed in the Loess Hilly Region in the Past 10 Years

更新时间：2025-03-12

- Sediment Response to Erosive Environment Evolution of a Typical Watershed in the Loess Hilly Region in the Past 10 Years
- Issue 3, Pages: 106-111(2017)
- 作者机构：
  
  中国科学院水利部水土保持研究所，黄土高原土壤侵蚀与旱地农业国家重点实验室，陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2017.03.019
  CLC：
- Published：2017
- 稿件说明：
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Sediment Response to Erosive Environment Evolution of a Typical Watershed in the Loess Hilly Region in the Past 10 Years[J]. 2017, (3): 106-111.
DOI：

Sediment Response to Erosive Environment Evolution of a Typical Watershed in the Loess Hilly Region in the Past 10 Years[J]. 2017, (3): 106-111. DOI： 10.13870/j.cnki.stbcxb.2017.03.019.

摘要

针对近年来黄河泥沙的锐减现状，以2003—2011年国家退耕还林工程实施效果的显现期为背景，采用典型流域剖析的方法，深入研究了近10年来黄土丘陵区典型流域侵蚀泥沙总量以及年际变化量。结果表明：小流域土壤侵蚀强度大幅度下降，年平均侵蚀模数不足500 t/km2·a，下降至退耕还林还草工程实施以前的8.3%。如不考虑建坝初期2003年的特殊状况，小流域2004—2011年侵蚀模数平均值为144.93 t/km2·a，为退耕前的2.4%。这表明在新的侵蚀环境背景下该小流域的侵蚀强度已稳定在轻度以下。

Abstract

Sediment discharge signi?cantly decreased in the Yellow River because of the effect of the ‘grain-for-green project’ (GGP). The typical watershed parsing method was applied to obtain the sediment yield and analyze the variation of the annual erosion modulus in a typical watershed in the loess hilly-gully region between 2003 and 2011. The results indicated that that sediment yield from the watershed declined dramatically

and the average erosion modulus was less than 500 t/km2?a

which was 8.3% of that before the implementation of GGP. Moreover

when excluding the data in 2003 because of the influence of the beginning of dam implement

the average erosion modulus during 2004-2011 was 144.93 t/km2?a

which was only 2.4% of that before the implementation of GGP

suggesting that there was a mild erosion in this watershed after the GGP. This study proved the significance of the effects of controlling sediment yield of the GGP

and it may help the planners and managers to make proper decisions for the control of soil erosion from watersheds under similar conditions.

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ZHOU Yi,WEI Tian-xing,XIE Jian-qiang,SHI Xin,GE Gen-batu,DONG Zhe,CHENG Zhong-qiu(Key Laboratory of Soil and Water Conservation & Desertification Combating,Ministry of Education/ School of Soil and Water Conservation,Beijing Forestry University,)

ZHANG Li-ping1,WU Xi-yuan1,ZHANG Rui-bo2(1.Zhejiang Provicial Key Laboratory of Subtropic Soil and Plant Nutrition,Key Laboratory ofPolluted Environment Remediation and Ecological Health,Ministry of Education,College of Natural Resources andEnvironmental Science,Zhejiang University,Hangzhou 310029,2.College of City,)

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