流域与降雨特征对城区径流水质的影响  

Impact of catchment and rainfall characteristics on urban runoff quality

作　　者：刘安[1,2] 管运涛[1,3] 刘梁[1,2] 

机构地区：[1]清华大学深圳研究生院,深圳518055 [2]清华-京大环境技术联合研究和教育中心,深圳518055 [3]清华大学环境学院,国家环境保护环境微生物利用与安全控制重点实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2014年第7期846-852,共7页Journal of Tsinghua University(Science and Technology)

基　　金：国家重大专项(2012ZX07301-001)

摘　　要：为了设计高效的面源污染控制设施,应用相关模型对当地的降雨径流水质模拟必不可少,这就对模型模拟结果的准确性和可靠性提出了较高要求。该文的研究从澳大利亚的4个城市流域雨水口采集雨水径流样品,并应用单变量与多变量相结合的数据分析方法对径流水质与其主要影响因素流域特征和降雨特征之间的关系进行分析。结果表明:相同的土地利用类型甚至不透水层面积比例仍然能产生不同的径流水质,同时发现悬浮颗粒物与氮、磷和有机碳的径流特性有所不同。研究结果也显示径流浓度和径流负荷受到不同降雨特征的影响,这些研究结果能够为径流水质模型方法的改进提供理论参考。Stormwater runoff quality models are needed to design effective non-point pollutant control device,which highlights the accuracy and reliability of modeling results.Runoff samples were collected at four urban catchment outlets in Australia. The relationship between runoff qualities and their key influential factors,i.e.catchment characteristics and rainfall characteristics was investigated using both univariate and multivariate data analysis techniques.The results indicate that catchments with the same land use type and impervious surface fraction may produce different runoff qualities and that the total suspended solids behave differently from nitrogen,phosphorus and total organic carbon in the stormwater runoff.The results also show that pollutant concentrations and loads in the runoff are affected by rainfall characteristics.These results contribute to the improvement of stormwater quality modeling.

关 键 词：面源污染 城市水环境 流域特征 降雨特征 

分 类 号：X52[环境科学与工程—环境工程]