摘要
基于闸口、临平雨量站实测资料,利用土地变化数据,分析了城市化进程对杭州市城西片降雨和径流的可能影响。结果表明,随着杭州市城西片的快速发展,虽然城市化对长时间尺度上降水的周期特征影响并不显著,年降水量波动变化,但暴雨雨日频数增加,径流系数变大,洪涝灾害也越来越频繁。
Based on the 1991--2009 observed rainfall data of station Zhakou and Linping, the informarion of land-use change is used to analyze the influence of urbanization on the rainfall and runoff in west areas of Hangzhou. The result shows that with the rapid devel- opment of west areas in Hangzhou, although the city of cycle effects on large scale precipitation is not significant, annual rainfall fluctuation changes, but the heavy rain causes probability increase, the runoff coefficient becomes larger, the flood disaster is more and more frequent
出处
《中国农村水利水电》
北大核心
2014年第3期36-40,共5页
China Rural Water and Hydropower
关键词
城市化
增雨系数
雨日频数
径流系数
urbanization
rain enhancement coefficient
rainfall frequency
runoff coefficient
