水资源保护2013，Vol.29Issue(3)：44-50,7.DOI:10.3969/j.issn.1004-6933.2013.03.010
深圳市不透水表面扩展对径流量的影响
Impact of impervious surface expansion on urban runoff in Shenzhen City
摘要
Abstract
The remote sensing technology and the L-THIA model were used to simulate the impact of impervious surface expansion on urban runoff in Shenzhen City.The results show that the impervious surface in Shenzhen City expanded rapidly from 1990 to 2005.It expanded by 1.9 times,from 26.5％ in 1990 to 49.3％ in 2005.This led to daily runoff increases of 136.2％ in the low rainfall scenario,83.7％ in the moderate rainfall scenario,59.5％in the high rainfall scenario,and only 40.8％ in the storm scenario,and caused annual runoff increases of 43.35％ and 54.85％ in wet and dry years,respectively,in 2005 than in 1990.The impervious surface expansion had a more significant impact on the low rainfall scenario than on the high rainfall scenario,and on dry years than on wet years.In regard to spatial distribution,evident imperviousness was found in the regions with a larger depth of runoff.These regions are the core of the city,and we need to focus on flood control and drainage in these regions.The L-THIA model used for simulation of runoff change caused by impervious surface expansion in rapidly urbanized cities and ungaged regions can produce reasonable results,which can provide a basis for strategic decisions in controlling urban water logging and flood hazards.关键词
不透水表面/SCS降雨曲线/径流量模拟/深圳市Key words
impervious surface/SCS rainfall-runoff curve/runoff simulation/Shenzhen City分类
天文与地球科学引用本文复制引用
刘珍环,曾祥坤..深圳市不透水表面扩展对径流量的影响[J].水资源保护,2013,29(3):44-50,7.基金项目
国家自然科学基金(41101170) （41101170）
