水利水电技术2017，Vol.48Issue(2)：22-26,36,6.DOI:10.13928/j.cnki.wrahe.2017.02.004
大伙房水库汛期径流变化趋势及影响因素定量分离研究
Study on trend and impacting factors quantitative separation of runoff in Dahuofang Reservoir during flood season
摘要
Abstract
Based on the monthly runoff and precipitation data from 1961 to 2004 in the flood seasons of Dahuofang Reservoir,the methods of Mann-Kendall tendency test,Mann-Kendall mutation inspection,Pettitt mutation inspection and rainfall and runoff double cumulative curve are adopted for analyzing mutability properties of the four serieses,i.e.the precipitation,the runoff depth,the maximum monthly precipitation and the monthly runoff depth of Dahuofang Reservoir during flood season,and then the slope changing ratio of cumulative quantity is applied to quantitatively evaluate the impacts from the precipitation and the human activity on the runoff depth and the maximum monthly runoff in flood season.The result shows that (1) the decreasing trends of both the precipitation and the runoff depth during flood season in the basin are not significant,while the increasing trends of both the monthly precipitation and the monthly runoff depth are not significant as well;(2) the mutations of the precipitation,the runoff depth,the maximum monthly precipitation and the maximum monthly runoff depth in flood season are not significant,for which the mutated years of the precipitation-runoff relationship are 1975,1985,and 1995,moreover,the capacity of runoff yield during flood season in the basin after 1975 is decreased;(3) the change of the runoff in Dahuofang Reservoir experiences four stages,for which the human activity is the dominant factor to cause the decrease of the runoff depth of the reservoir in flood season,while the change of precipitation is the main causation for the increase of the maximum monthly runoff depth as well.关键词
大伙房水库/汛期/降雨/径流深/人类活动/M-K突变检验/影响因素Key words
Dahuofang Reservoir/flood season/precipitation/runoff depth/human activities/Mann-Kendall mutation inspection/influence factors分类
水利科学引用本文复制引用
舒章康,刘冀,董晓华,郭家力..大伙房水库汛期径流变化趋势及影响因素定量分离研究[J].水利水电技术,2017,48(2):22-26,36,6.基金项目
国家自然科学基金项目(41101511,51509141) （41101511,51509141）
湖北省教育厅自然科学研究项目(Q20141204) （Q20141204）
