湖泊科学Issue(3)：765-774,10.DOI:10.18307/2017.0326
基于DEM的大别-皖南山区平均洪峰滞时定量分析
DEM-based quantitative analysis of average peak time lag of Dabie-South Auhui mountain area
摘要
Abstract
Based on Digital Elevation Model( DEM) in 27 small watersheds of Dabie-South Auhui mountain area, the topographic information was extracted and the average peak time lag was calculated. By establishing the mathematical model of multiple linear regression and path analysis, the influence of the factors on the flood response of the river basin is discussed. The results show the following:At the level of the valley system, shape factor and roundness, valley relative elevation, channel branching frequency and the forest coverage rate affect the basin average peak time lag mainly. And basin relative elevation is the most fundamental explana-tory variables;Different geomorphic factors interaction is complex. The multiple linear regression model of average peak time lag has 73.4% explanatory. Further more,the path analysis model respectively describes influence of each variable to the average peak time lag from direct effect and indirect effect. The results can provide important reference to analysis the flood response process of South Anhui mountain area. It is significant for flood control and disaster mitigation.关键词
数字高程模型/洪峰滞时/地貌因子/多元线性回归/通径分析Key words
Digital Elevation Model/peak time lag/geomorphology factor/multiple linear regression/path analysis引用本文复制引用
曹子月,姚成,李致家,钟栗,顾玮琪..基于DEM的大别-皖南山区平均洪峰滞时定量分析[J].湖泊科学,2017,(3):765-774,10.基金项目
国家自然科学基金项目(51679061,41130639)、水利部公益项目(201501022)和国家重点研发计划项目(2016YFC0402705)联合资助. （51679061,41130639）
