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土壤侵蚀是一个世界性的环境问题 ,它使土壤的生产力和用水的质量降低 ,从而引起土壤沉积并增加了发生洪涝灾害的可能性。随着世界范围内土壤侵蚀的日益严重以及水土流失问题的突出 ,土壤侵蚀的研究越来越深入。但目前对土壤侵蚀的工作大多局限在模型的改进和其相关因子的选择上 ,缺乏一个良好的用户界面来完成土壤侵蚀模型各个因子以及土壤侵蚀预测结果的分析与其可视化。通过充分利用 GIS的有关技术 ,建立了一个基于 USL E的网络土壤侵蚀模型 ,并设计了应用界面 ,解决了上述问题。试验表明 :这个基于 WEBGIS的土壤侵蚀模型 ,不仅使土壤侵蚀研究成果通过 GIS的良好界面表现出来 ,而且还可以利用 GIS的有关分析工具 ,反过来促进土壤侵蚀模型的改进。
Soil erosion is a worldwide environmental problem that lowers the productivity of the soil and the quality of the water used, causing soil deposition and increasing the likelihood of flooding. With the increasing soil erosion worldwide and the prominent problems of soil and water loss, the research on soil erosion has been deepening. However, most of the current work on soil erosion is limited to the improvement of the model and the selection of its related factors, and lack of a good user interface to complete the analysis and visualization of various factors of soil erosion model and soil erosion prediction results. By making full use of GIS technology, a soil erosion model based on USL E was established and the application interface was designed to solve the above problems. The experiment shows that this model of soil erosion based on WEBGIS not only shows the result of soil erosion through the good interface of GIS, but also can make use of the relevant analytical tools of GIS to promote the improvement of soil erosion model.