摘要
通过GIS软件的水文分析模块对浙江省长兴县30m DEM数据做流域划分,选择最北部的一个完整的小流域作为研究区,以氨氮作为污染指标,利用改进后的输出系数法合理估算其非点源污染负荷及主要来源,并结合行政区划和各乡镇特点提出相应的非点源污染控制手段,为当地可持续发展及相关决策提供参考.
Using the hydrological analysis module of GIS to divide watershed based on the data of 30-meter DEM of the county of Changxing in Zhejiang province and selecting the most northern part which is a complete watershed as the study area as well as with ammonia nitrogen as a pollution assessment index, we use an improved export coefficient method for estimating polluting load of non-point source pollution and analyze its main source, and then make the appropriate means of non-point source pollution control combined with characteristics of admin- istrative divisions and towns. The results of the study will offer some references for the local decision-making and sustainable development.
出处
《临沂师范学院学报》
2010年第3期30-35,共6页
Journal of Linyi Teachers' College
基金
国家水体污染控制与治理科技重大专项(2008ZX07526-007)
关键词
小流域
非点源污染
控制
small watershed
non-point source pollution
control
