浅论区域水土流失模型设计及参数采集方法

在已有区域试验研究和观测数据、水土流失因子研究成果基础上,基于坡面土壤侵蚀机理对区域水土流失过程进行分析,基于结合GIS空间分析功能,进行了区域尺度上水土流失模型设计的初步尝试,并提出了模型所需参数的提取方法及精度要求,本模型在延河流域试运算结果反映了接近现实的土壤侵蚀时空分布趋势和分异。

Based on the existing regional experi mental research result,observation data and research achievement on the cause of soil erosion,according to the soil erosion mechanismon the slope,the regional soil erosion process was analyzed in this paper.Combining with the space analysis function of the GIS,the regional soil erosion model design was conducted preliminarily.Moreover,the extraction method for the parameters of the model and its precision requirement were also put forward.Application result of the model...