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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (20): 237-242.doi: 10.11924/j.issn.1000-6850.2011-3627

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

基于RS和GIS的伊河流域土壤侵蚀研究

何耀帮 赵永兰 田国行 何瑞珍   

  • 收稿日期:2011-12-03 修回日期:2012-02-14 出版日期:2012-07-15 发布日期:2012-07-15
  • 基金资助:

    河南省科技攻关项目

Study on Soil Erosion of Yihe Valley Based on RS and GIS

  • Received:2011-12-03 Revised:2012-02-14 Online:2012-07-15 Published:2012-07-15

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摘要：

为了有效地评价由土壤侵蚀引起的伊河流域的面源污染状况，依据水利部颁布的《土壤侵蚀分类分级标准》(SL 190—2007)，应用通用土壤侵蚀方程，借助遥感和GIS技术精确计算模型各参数因子，对伊河流域区域土壤侵蚀强度进行评价，揭示土壤侵蚀在空间分布上的差异，并简要地分析植物覆盖度对土壤侵蚀的影响。结果表明，伊河流域微度侵蚀面积占整个流域的90.1%；在影响土壤侵蚀的几个因子中，地形因子的影响最大，在山区植被覆盖度高的地方，土壤的侵蚀模数较小。

关键词: 膳食纤维, 膳食纤维

Abstract:

In order to effectively assess the non-point source pollution of the Yihe watershed caused by the soil erosion, based on soil erosion classification grade criteria (SL 190-2007), universal soil loss equation (USLE) as a key quantitative evaluation model for soil erosion, was used to precisely calculate the parametric factors of the model based on the remote sensing and GIS. Soil erosion intensity in Yihe Valley was assessed by USLE. The space distribution difference of soil erosion intensity was showed and the influence of vegetation cover to soil erosion was analyzed in this study. The result showed that slight eroded area was 90.1% and the terrain factor was the most important in the few factors. In the mountainous area owing to higher vegetation cover the soil erosion was smaller.

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