湖泊科学2012，Vol.24Issue(4)：637-642,6.
经验方法研究下垫面变化对洪水的影响
Impacts of altered basin landscape on floods using an empirical method
摘要
Abstract
Since 1980s, with the increasing impacts of human activities on the river basin landscape, it is significant to investigate the impact of landscape changes on the rainfall-iunoff regime. This paper simulated the floods occurred in the Zijingguan and Fup-ing catchments of the Haihe Basin using an empirical method. The flood <iata were segmented by time for creating the P + Pt—Rt curve to analyse the influence of the altered catchment landscapes on surface flow regime. Based on the unit hydrograph method, the relationship between the runoff R and peak discharge Qm was established. The results show that by comparison of the trendlines in different time periods, with the same runoff volume, the peak discharge after 1980s is less than that before 1980s. It indicates thai the water regulation function of Haihe Basin was enhanced. Based on the relationship between the changes of runoff and peak discharge induced by the altered basin landscapes, it is found that there is a positive correlation between them.关键词
下垫面变化/经验方法/单位线/P+Pa～Rs曲线/海河流域Key words
Altered basin landscapes/ empirical method/ unit hydrograph/ P + PM — R, curve/ Haihe Basin引用本文复制引用
李致家,周赛,姚玉梅,戴健男,张建中,胡春岐,姚成..经验方法研究下垫面变化对洪水的影响[J].湖泊科学,2012,24(4):637-642,6.基金项目
国家博士点基金项目(20090094110005)、半湿润半干旱流域用于水文预报的新一代降雨径流水文模型研究项目(41130639)和洪水预报降雨径流分布式水文模型中新一代流域汇流模型及尺度规律研究项目(51179045)联合资助 （20090094110005）
