基于WebGIS的土壤侵蚀模型的研究及应用

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。

Research and Application of Soil Erosion Model Based on WebGIS

Soil erosion is a global environment problem. It reduces the production ability of soil and the quality of water, then leads to the soil sediment and increases the occurrence possibility of flood. With the worse condition of the worldwide soil erosion, and the prominence of the problem of soil and water lost,the research of soil erosion becomes more embedded. However, at the present time, almost all the jobs in this field are limited to such an aspect as the model amendment and the selection of its correlative factors and lacks for a good interface to complete the analysis and the visualization of model factors. Utilizing the GIS technique adequately, this experiment has established a network model based on USLE and devised a friendly interface to solve this problem. The experiment indicates that this model not only represents the research results adequately by a good interface, but also gives a good indication to improve the soil erode model by utilizing the correlative tools of GIS.