Because of traditional methods 'limitation, it is difficult to take the spatial variability of hydrological factors into consideration for watershed simulation.
传统的流域模拟由于方法本身的局限性，很难考虑和处理水文要素在空间分布上的差异性。
As there have been many widely used watershed hydrological models, it now becomes possible to select a number of different hydrological models in parallel running for rainfall-runoff simulation.
由于目前已有很多比较成熟的流域水文模型，因此我们可以选用几个流域水文模型进行并行运算，来同时模拟流域降雨—径流关系。
Based on COMGIS technology, a GIS for the simulation of soil erosion of Dongzhen reservoir watershed has been created, which has the functions of data management, spatial analysis and visualization.
根据组件式GIS技术构建了东圳水库土壤侵蚀模拟GIS系统，该系统可以实现数据管理、空间分析、模型运算功能。
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