生态环境建设对湟水河流域水土流失的影响
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中国科学院重点部署项目“黄土高原及周边沙地近代生态环境的演变与可持续发展性”(KZZD-EW-04-04)


Effects of Eco-environmental Construction Projects on Soil and Water Loss in Huangshui River Basin
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    摘要:

    选择湟水河流域为研究区,以2000年与2009年的Landsat TM/ETM数据为信息源提取土地覆盖以及植被覆盖度信息,结合Aster DEM数据,在地理信息系统技术的空间分析功能的支持下,依据水利行业《土壤侵蚀分类分级标准》(SL190—2007),通过叠加分析研究区近10a生态环境建设工程的水土保持效应。结果表明,10a中湟水河流域坡面侵蚀有所减弱,2009年微度以上侵蚀相比2000年少了309.11km2,但沟谷侵蚀强度趋于增强,10a净增加706.87km2。研究表明目前工程措施对于治理面蚀效果明显,对于沟蚀作用不明显。

    Abstract:

    Effects of eco-environmental construction projects on soil and water loss from 2000to 2009were studied by taking the Huangshui River basin as the study area.Landsat TM/ETM data of 2000and 2009 were used to derive the data of land cover and vegetation in combination with the Aster DEM.The study was conducted by the“Standards for Classification and Gradation of Soil Erosion” (SL190-2007)and with the support of GIS techniques.Results showed that soil erosion on slope in the Huangshui River basin was reduced somewhat in the last ten years.The intermediate and above soil erosion in 2009was reduced by 309.11km2 as compared with that in 2000,but gully erosion tended to increase,with a net increase of 706.87km2.This illustrates that the engineering measures are effective to soil erosion on slope,but insignificant to gully erosion.

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白雄雄,颜长珍.生态环境建设对湟水河流域水土流失的影响[J].水土保持通报,2013,(3):217-219,305

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  • 收稿日期:2012-05-23
  • 最后修改日期:2012-06-23
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  • 在线发布日期: 2014-11-12
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