基于SWAT模型的汤浦水库流域非点源污染模拟  

SWAT-Based Simulation on Non-point Source Pollution in the Tangpu Reservoir Basin

作　　者：施练东 俞海平 朱建坤 方勇 魏张文 

机构地区：[1]汤浦水库有限公司,浙江绍兴312364

出　　处：《水生态学杂志》2011年第3期66-70,共5页Journal of Hydroecology

基　　金：浙江生态省建设重大科技攻关项目(2005C13002)

摘　　要：在对汤浦水库流域内污染调查的基础上,建立了基于GIS技术的SWAT模型,建立了汤浦水库流域非点源污染空间和属性信息基础数据库,在GIS技术和ArcScene、Arcview等软件支持下,研究流域非点源污染分布规律、主要污染因子、各溪各镇的污染贡献率以及流域污染负荷总量等。结果表明,在空间尺度上,南溪和双江溪流域营养物质贡献量最高,泥沙量较大;不同土地利用类型污染流失负荷不同,灌溉水田是总氮负荷的主要来源,水田和茶园是总磷负荷的主要来源,其次是居民点,最小是林地。在时间尺度上,年内总氮、总磷负荷随季节呈不规则的"W"形态变化。A SWAT （Soil and Water Assessment Tool） model based on GIS technology was established in Tangpu Reservoir Basin,as well as its basic database for information of non-point pollution source space and properties. Distribution of non-point pollution, main pollution factors,contribution rate from different rivers and towns and gross pollution load of the valley were studied using GIS technology and softwares such as ArcScene,Arcview and so on. The results showed Nanxi River and Shuangjiang River valleys contribute the most nutrients,as well as large sediment in spatial scale.The load of pollution loss varies with different land use types.Nitrogen load was mainly from irrigated farmland.Tea garden and irrigated farm were the primary sources for phosphor, followed by settlement,and then woodland.In time scale, the nitrogen and phosphor load varied in irregular W shape as seasons change.

关 键 词：SWAT模型 汤浦水库 非点源污染 模拟 

分 类 号：X830.3[环境科学与工程—环境工程]