人民长江2017，Vol.48Issue(10)：1-5,5.DOI:10.16232/j.cnki.1001-4179.2017.10.001
城市雨洪放大效应驱动因子时空演变规律分析
Spatio-temporal evolution analysis of driving factors in amplification effect of urban flood
摘要
Abstract
Urban flooding presents complex amplification effect because of the increase of heavy rainstorm, sharp decrease of impervious surface, change of drainage and impound capacity and expansion of drainage pipelines.Taking Wuhan as an example, we selected rainfall intensity, impervious area proportion and drainage channels density as driving factors to analyze the amplification effect of urban flood.The results showed that the total annual precipitation and duration increased obviously since 1980s in Wuhan;the impervious surface increased quickly in the early 1990s, and then remained relatively stable growth;the drainage pipe grew up slowly from 1990 to 2006, while had jumped since 2007.The increase of precipitation and rainfall duration caused the increase of the total amount of urban flood, and brought more probability for rainstorm waterlogging.The increase of impervious surface and the decrease of water storage areas not only led to the larger flood amount but also the shorter time of confluence, and the construction of storm-drainage channels shortened the natural flow path, thus, amplification effect of urban flood occurred with high and advanced peak.The results can be used for quantitative response research of flood amplification and driving factors, and provide the basis for the quantitative relationship between urban waterlogging risk and driving factors, thus to support for waterlogging risk control measures.关键词
驱动因子/时空演变/降雨/不透水面/排水管道/武汉市Key words
driving factors/spatio-temporal evolution/precipitation/impervious ground/drainage channel/Wuhan City分类
天文与地球科学引用本文复制引用
邹霞,刘佳明,宋星原..城市雨洪放大效应驱动因子时空演变规律分析[J].人民长江,2017,48(10):1-5,5.基金项目
国家自然科学基金资助项目(51379149) （51379149）
自主科研基金(2042016kf1084) （2042016kf1084）
