摘要
水体污染的首要原因之一是面源污染,地表过多的营养物质通过地表径流进入水体从而产生污染。这里应用RS和GIS技术,结合输出系统模型,对贡井区旭水河流域非点源污染负荷进行多时相空间分布模拟。结果表明:贡井区非点源污染负荷TN、TP由于当地土地开发利用的缘故,从2007年到2009年呈逐渐上升趋势;在空间分布上TN、TP分布呈越来越离散趋势。研究表明:不同土地利用类型对非点源污染负荷的贡献率也存在着显著差异。
One of the primary causes of water body pollution is that too much nutrients substance in surface through surface runoff goes into the water to produce pollution.The RS and GIS technologies combing export coefficient model have been ap-plied to stimulate phase and space for non-point pollution load in Gongjing district in this paper.The study shows due to local land and development and utilization lead non-point pollution load TN and TP in a rising trend from 2007 to 2009;On the spa-tial distribution,TNand TP showed a trend of more and more discrete distribution.Various land use types on the contribution of non-point source pollution load also exist significant differences.
出处
《物探化探计算技术》
CAS
CSCD
2015年第1期130-134,共5页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家自然科学基金资助项目(41071265)
2010年度高等学校博士学科点专项科研基金(20105122110006)
