基于SWAT模型的流域非点源污染模拟  

Simulation of non-point source pollution in watershed based on SWAT model

作　　者：张皓天[1] 张弛[1] 周惠成[1] 沈必成 

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024 [2]黑龙江省水文局,黑龙江哈尔滨150001

出　　处：《河海大学学报（自然科学版）》2010年第6期644-650,共7页Journal of Hohai University(Natural Sciences)

基　　金：国家"十一五"科技支撑计划(2007BAB28B01)

摘　　要：利用SWAT(soil and water assessment tool)模型,在GIS技术支持下,通过构建模型所需的空间数据库和属性数据库,以黑龙江蚂蚁河流域为研究区域进行流域非点源污染的模拟研究.分别在时间和空间尺度上对研究区域非点源污染负荷分布进行分析,识别出非点源污染严重的区域及其影响因素.结果表明:在时间尺度上,非点源污染物负荷与降雨量和径流量有较强的相关关系;在空间尺度上,流域西南部地区非点源污染较为严重;不同土地利用类型的非点源污染负荷不同,耕地的非点源污染单位面积负荷最高,疏林地次之,林地等其他土地利用类型的单位面积负荷较小.Based on the SWAT model and the GIS technology,simulation of non-point source pollution （NPS） in Mayihe watershed of Heilongjiang Province was performed by establishing the spatial database and the attribute database required by the model.The distribution of NPS loads in the study area was analyzed from the perspective of space and time.The severe zones of NPS and their factors were identified.The results show that on the temporal scale,the NPS loads have strong correlation with precipitation and runoff.On the spatial scale,the southwest of the watershed has severe NPS loads.The NPS loads for on different land uses are different.The farmlands have the highest NPS loads,the open forest lands are the second highest contributor,and the woodlands and the areas with other land use have smallest NPS loads.

关 键 词：SWAT 非点源污染 时空分布 土地利用 蚂蚁河流域 

分 类 号：X502[环境科学与工程—环境工程]