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中文摘要：
降雨径流污染对快速城市化地区的水环境安全造成巨大威胁。在对深圳市石岩水库6条入库支流的4次降雨径流事件进行水文水质监测的基础上,选择CODCr、NH3-N、TN、TP、SS和BOD56种常见水质测试指标对该区域的降雨径流污染的水质状况、空间差异和初始冲刷效应等基本特征进行了分析。结果表明,研究区降雨径流中耗氧性污染物尤其是固体悬浮物污染严重;城镇用地占较大比例的流域,污染物以颗粒态输出为主;城中村比例较大的子流域降雨径流污染严重;初始冲刷强度随着子流域不透水面积比例和雨强的增大而增强。
英文摘要：
Stormwater runoff poses a great threat to local water quality and aquatic ecosystem in rapid urbanizing areas.Six watersheds in the city of Shenzhen were selected for study on characteristics of stormwater runoff in four rainfall events.Six indicators of water quality（CODCr,NH3-N,TN,TP,SS and BOD5） were analyzed for the characteristic of water quality and the first flush phenomenon.It could be concluded from the water quality analysis that SS,CODCr and BOD5 were relatively significant in nonpoint source pollution in this area.In watersheds with more urban land most pollutants had strong correlations with SS.Watersheds with more urban villages were likely to build-up more nonpoint pollutants due to more individual and irregular human activities（e.g.illicit connections,littering） as well as poor sewage sewers along with a rapid urbanization.The first flush effect was proportional to the percent of impervious surface and the rainfall intensity.
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