南苕溪流域情景变化模拟及面源污染防治研究  

Study on Scenario Change Simulation and Non-point Source Pollution Prevention in Nantiaoxi River Basin

作　　者：潘如意 丁建华 田刚 刘伟 王冉 PAN Ruyi;DING Jianhua;TIAN Gang;LIU Wei;WANG Ran(Wenzhou Municipal Bureau of Water Resources,Wenzhou 325002,Zhejiang,China;Zhejiang Guangchuan Engineering Consulting Co.,Ltd.,Hangzhou 310020,Zhejiang,China;Zhejiang Key Laboratory of Hydraulic Disaster Prevention and Mitigation,Hangzhou 310017,Zhejiang,China)

机构地区：[1]温州市水利局,浙江温州325002 [2]浙江广川工程咨询有限公司,浙江杭州310020 [3]浙江省水利防灾减灾重点实验室,浙江杭州310017

出　　处：《浙江水利科技》2023年第6期26-30,37,共6页Zhejiang Hydrotechnics

基　　金：浙江省水利科技计划项目(RC2044)。

摘　　要：为深入研究南苕溪流域农业面源污染,制定切实有效的污染防治措施,利用SWAT模型情景模拟功能,定量模拟不同假设情景对流域面源污染负荷产生的影响。结果表明,流域多年平均总氮、总磷负荷产生量分别为1258.56 t和268.79 t;其中减少施肥量对削减流域面源污染负荷影响程度有限,影响变化率不到3.0%;生态拦截工程情景使流域总氮、总磷负荷分别减少26.3%和28.6%,对削减流域面源污染负荷流失起到明显效果。在流域面源污染治理时应重点考虑在流域西北部和东部雷竹、山核桃、园地等农作物集中种植区域建设坡面截排水沟、坑塘等生态拦截工程。In order to deeply study agricultural non-point source pollution in Nan tiaoxi Basin and formulate effective pollution prevention measures,the SWAT model scenario simulation function was innovatively used to quantitatively simulate the impact of different hypothetical scenarios on non-point source pollution load in the basin.The results showed that the annual average total nitrogen(TN)and total phosphorus(TP)load in the basin were 1258.56 t and 268.79 t respectively;only reducing the amount of fertilization had a limited impact on reducing the non-point source pollution load in the basin with the impact change rate of less than 3%;the ecological interception project scenario reduced TN and TP load by 26.3%and 28.6%respectively,which played an obvious role in reducing the loss of non-point source pollution load in the basin.Therefore,ecological interception projects such as slope interception and drainage ditches,ponds should be built in the northwest and east of the basin where crops were concentrated,such as phyllostachys praecox,carya cathayensis and garden plots.

关 键 词：面源污染 SWAT模型 南苕溪流域 情景模拟 生态拦截 

分 类 号：X522[环境科学与工程—环境工程]