基于SWAT的涟水河上游流域非点源污染模拟  

Simulation of Non-point Source Pollution in Lianshui River Upper Basin Based on SWAT Model

作　　者：楚贝[1] 蒋昌波[1,2] 胡世雄[2,3] 刘东润[4] 

机构地区：[1]长沙理工大学水利工程学院,长沙410076 [2]长沙理工大学水沙科学与水灾害防治湖南省重点实验室,长沙410076 [3]美国宾夕法尼亚州立 EastStroudsburg大学,美国宾州18301-2999 [4]湖南省水文水资源勘测局,长沙410076

出　　处：《三峡大学学报（自然科学版）》2011年第5期19-25,共7页Journal of China Three Gorges University：Natural Sciences

基　　金：湖南省科技计划重点项目(2009TP4030-2)

摘　　要：以涟水河娄底水文站上游流域为研究区域,应用SWAT模型对该区域的径流、泥沙及非点源氨氮、总磷污染负荷进行模拟计算.将1998年设置为模型启动期,即"模型预热",利用娄底水文站1999～2002年的实测月径流、氨氮及总磷的实测数据进行模型参数确定,运用2003～2005年实测的月径流、氨氮及总磷数据对调参后的模型进行模型验证,验证结果表明模型基本合理可行,可用于涟水河上游流域的非点源污染模拟计算.运用率定后的模型,去除点源污染,重新进行模拟得到最终的非点源污染氨氮、总磷.根据模拟结果对该区域的径流、泥沙、氨氮及总磷污染负荷的时空分布特点进行了分析,为涟水河娄底水文站上游流域非点源污染的综合防治规划提供了参考和依据.Lianshui River basin above Loudi hydrologic station is selected as the study area.SWAT model is applied to simulating computation monthly flow,sediment and pollutant.Year of 1998 is set as model starting year;data series of 1999-2002 are used to calibrate the correlative parameters of flow,sediment and pollutant;the data series of 2003-2005 are used to validate model.The results of calibration and validation show that the model is rational and available.Getting grid of the point pollution from importing data and running the calibarated model again to obtain the wanted non-point data,calculate the loadings of non-point source pollutants of different typical years.Based on the simulated results,the temporal and spatial distributions of flow,sediment and non-point source pollution are analyzed,so as to provide the scientific basis for the controlling planning of non-point source pollution in the basin.

关 键 词：涟水流域 SWAT模型 非点源污染 

分 类 号：X143[环境科学与工程—环境科学]