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地理科学  2015 

基于RUSLE模型的土壤侵蚀时空分异特征分析——以辽宁省朝阳市为例

, PP. 365-372

Keywords: 土壤侵蚀,RUSLE,GIS,RS,朝阳市

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Abstract:

以数字高程模型(DEM)、降雨量、土壤、遥感影像等为基础数据,运用GIS与遥感技术,结合RUSLE模型研究辽宁省朝阳市2001~2010年的土壤侵蚀时空分异特征。研究结果如下①2001~2010年土壤侵蚀模数总体呈下降趋势,其中2009年的平均土壤侵蚀模数为254.02t·hm-2·a-1,为10a间最低值;②微度土壤侵蚀面积总体呈上升趋势,但以上2个指标在2010年均出现了不同程度的反弹;③朝阳县是土壤侵蚀最严重的地区,土壤侵蚀模数的平均值最高,为747.33t·hm-2·a-1,中度以上土壤侵蚀面积分别为29.2%、32.67%、34.57%、31.41%。

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