城市雨水径流热污染及其缓解措施研究进展

阐述了城市雨水径流热污染对受纳水体的影响,尤其是对鳟鱼、鲑鱼等冷水鱼的危害,分析了城市下垫面对雨水径流温度的影响,指出非渗透路面所储存的大量热量促使雨水径流的温度升高。综述了国内外城市雨水径流热污染效应及雨水管理措施对径流温度影响方面的研究现状,指出我国开展径流热污染研究及采取缓解措施的必要性。在对发达国家和我国的雨水管理措施缓解城市雨水径流热污染效果评析的基础上,结合我国典型城市特点提出了缓解城市雨水径流热污染效应的若干建议。

Advance in thermal pollution of urban rainfall runoff and its mitigation measures

The influences of urban runoff thermal pollution on urban surface water and cold-water fishes like trout and salmon were studied.The influence analysis of the urban underlying surface on the temperature of rainwater runoff showed that thermal energy absorbed and stored by urban impervious surfaces caused the temperature increase of rainwater runoff.The research status of the influence of runoff thermal pollution and management practices on runoff temperature were summarized and it is pointed out that it is necessary to study runoff thermal pollution and to take mitigation measures.Based on the effects of mitigation measures on urban runoff thermal pollution in developed countries and China,some suggestions are made for reducing rainwater runoff thermal pollution according to the characteristic of typical cities in China.