Study on the risk pattern of non-point source pollution using GIS technology in the Dianchi Lake Watershed

被引：3
|
作者：
Wu, Cheng [1 ]
Deng, Guochun [1 ]
Li, Yan [1 ]
Li, Zhiying [2 ]
Yang, Shuhua [1 ]
机构：
[1] Yunnan Univ, Sch Life Sci, Kunming 650091, Peoples R China
[2] Sch Urban Construct, Kunming 650091, Peoples R China
来源：
PROGRESS IN ENVIRONMENTAL SCIENCE AND ENGINEERING (ICEESD2011), PTS 1-5 | 2012年 / 356-360卷
基金：
中国国家自然科学基金;
关键词：
Non-point source pollution; risk evaluation; Geographical Information System; Dianchi Lake Watershed;
D O I：
10.4028/www.scientific.net/AMR.356-360.771
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A rapid quantitative risk evaluation system of non-point source pollution (NPSP), based on comprehensive consideration of various factors such as topographic features, land use construction, annual mean precipitation, soil erosion characteristics and pollutant removal cost, was constructed using an Spatial Analysis Module of GIS on watershed scale. We investigated the risk pattern of NPSP in the Dianchi Lake Watershed using the rapid risk assessment system. The results indicated that NPSP risk pattern showed the arc or normal distribution trend in the Dianchi Lake Basin, namely the medium risk area of NPSP is the largest (about 1311 km(2)). Moreover, the spatial difference of high risk NPSP pattern is remarkable: the high risk region for NPSP was primarily in the 10 km range of the southern and eastern parts and the 5 km range of western part around the Dianchi Lake.
引用
收藏
页码：771 / +
页数：2
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