Study of Applying USLE and Geographical Information System IDRISI to Predict Soil Erosion in Small Watershed

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Study of Applying USLE and Geographical Information System IDRISI to Predict Soil Erosion in Small Watershed

更新时间：2024-11-07

- Study of Applying USLE and Geographical Information System IDRISI to Predict Soil Erosion in Small Watershed
- Vol. 14, Issue 2, Pages: 19-24(2000)
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  CLC： S157.1S12
- Published：2000
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Study of Applying USLE and Geographical Information System IDRISI to Predict Soil Erosion in Small Watershed[J]. 2000, 14(2): 19-24.
DOI：

Study of Applying USLE and Geographical Information System IDRISI to Predict Soil Erosion in Small Watershed[J]. 2000, 14(2): 19-24. DOI：

摘要

依据实地调查资料，建立了典型小流域地理数据库，应用径流小区观测结果，确定了定量计算通用土壤流失方程因子指标方法，在地理信息系统ＩＤＲＩＳＩ支持下，根据ＵＳＬＥ土壤侵蚀预测模型对数据库实施运算操作，预测了小流域土壤侵蚀量。结果表明，占流域面积６７％的区域土壤侵蚀微弱或轻度，这一区域对流域土壤侵蚀量的贡献率仅为３％，而流域８０％的泥沙来自于占流域面积仅２０％的极强度和剧烈侵蚀区域。

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Study of Applying USLE and Geographical Information System IDRISI to Predict Soil Erosion in Small Watershed

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