基于RS和GIS的区域水土流失快速定量评价方法

区域水土流失的快速调查和评价对于水土保持宏观决策、灾情快速反应以及水土流失定期公告制的建立具有十分重要的意义。立足于区域水土流失问题的探索和 3S技术应用的研究 ,提出了区域水土流失宏观快速定量评价的方法及其实现的技术路线 ,并以整个黄土高原为研究区进行了实例研究 ,确定了一套适于该区水土流失宏观定量评价的指标 ,建立了相应的评价模型 ,并利用该模型对研究区一定年限内的水土流失状况进行了评价 ,获得了令人满意的结果

The rapid survey and assessment study on region scaled soil and water loss is very significant to macro decision making of regional soil loss control, quick control to natural disasters and construction of poster regime on soil loss regularly. Based on the study of region scaled soil loss and 3S application, the rapid assessing method is put forward; and taking the whole loess plateau of China as a sample region, series of indices are defined; the model is set up to help to appraise the soil loss in t...