摘要
将模拟试验、GIS技术和非点源污染模型相结合 ,探讨了苏州河流域的非点源污染负荷及时空演变规律。结果表明 ,研究区域内非点源成为主要的污染源 ,其中非点源污染负荷CODCr约为 6740t a,TN ,TP和NH4 + -N分别达 914 ,184和 2 98t a ;水田和村居民点是主要的污染贡献者 ;非点源污染负荷均表现为梅雨 >秋雨 >春雨 >
Non\|point sources pollution loading and its temporal and spatial variability were discussed through the integration of trial experiments,GIS techniques and pollution models in Suzhou creek.It was found that non\|point sources became the main pollution sources,and annual pollution loading of COD\-\{Cr\} reached about 6 740 t,and TN,TP and NH\-4\++-N about 914,184 and 298 t respectively in the study area.Rice paddy fields and villages were the major contributors of pollution,and various non\|point sources pollution loading were all in the same and obvious seasonal rule:summer rain>autumn rain>spring rain>winter rain.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2002年第6期20-23,27,共5页
Research of Environmental Sciences
基金
国家自然科学基金重点项目 (4 983 10 70 )
关键词
苏州河
非点源污染
污染负荷
GIS
non\|point source
pollution loading
GIS
Suzhou creek
