水科学进展2015，Vol.26Issue(5)：631-638,8.DOI:10.14042/j.cnki.32.1309.2015.05.004
流域地貌结构因子对径流特征的影响分析
Analyzing the influence of geomorphologic structure factors on runoff characteristics of catchments
摘要
Abstract
Geomorphologic structure factors significantly affect hydrological processes. In this study, eleven catchments which located in the main storm center in the Huaihe River basin were adopted as study areas. We ana-lyzed the influence of geomorphologic structural factors (the characteristic values of hypsometric curve, et al.) on the hydrological characteristics. The hydrological characteristics include annual mean runoff coefficient and the slope of the flow duration curve in its upper and lower portions( Sfh and Sfl ) . The results show that the characters of hypsometric curve ( integral value, slope) have greater influence on runoff characteristics than other factors. For example, the co-efficient of determination between annual mean runoff coefficient, Sfh and the slope of hypsometric curve is 0. 77 and 0. 67, respectively, and the coefficient of determination between Sfl and the integral of hypsometric curve is 0. 65. They indicate that, the larger the slope of hypsometric curve, the steeper terrain of a catchment, in which it is prone to flash flood and the annual mean runoff coefficient would be larger. On the contrary, the smaller the integral value of hypsometric curve, the flater terrain of a catchment, in which its flood hydrograph tends to become smoother and it has a higher storage capacity.关键词
中小流域/地貌结构因子/径流特征Key words
catchment/geomorphologic structural factors/hydrological characteristics分类
天文与地球科学引用本文复制引用
刘金涛,王爱花,韦玉,程兵峰,韩小乐..流域地貌结构因子对径流特征的影响分析[J].水科学进展,2015,26(5):631-638,8.基金项目
国家自然科学基金资助项目( 41271040) （ 41271040）
国家重点实验室自主科研项目( 20145028012)The study is financially supported by the National Natural Science Foundation of China ( No. 41271040) . （ 20145028012）
