基于RS和GIS的农业土地利用污染分析

An Analysis on Pollution in Agricultural Land Use Based on RS and GIS

农业已被确认为地表和地下水最主要的非点源污染源,而土地利用方式又是影响非点源污染的关键性因素。讨论了非点源污染与农业土地利用方式之间的关系,利用组件GIS技术,实现非点源污染负荷的定量计算及可视化分析。最后,以上海市松江区作为研究区域,对该区的污染情况进行了分析。结果表明,研究所提出的方法及开发的模块在非点源污染分析中基本上能满足要求,可以为环境建模提供必不可少的参数。

Agriculture activities have been considered as a major contribution to the non-point source pollution of surface water and groundwater, while the land use mode is a key factor. The relationship between non- point source pollution and land use mode was discussed, and the quantitative estimation and visual analysis of the non-point source pollutant loading were realized by using the COM GIS techniques. Finally, Songjiang District of Shanghai was taken as a case for the analysis.