水土保持研究2012，Vol.19Issue(1)：19-22,4.
近50年赣西北大坑小流域径流对降雨的响应
Response of Runoff to Rainfall in Dakeng Small Watershed in Northwestern Jiangxi Province over the Last 50 Years
摘要
Abstract
Based on the data from 1957—2005 in Dakeng Small Watershed in Northwestern Jiangxi Province,the analysis of precipitation variation and its runoff response were carried out by mean of time-serial eigenvalue,statistical regression.The results suggested that：（1） annual mean precipitation is 1 596.3 mm,which monthly variation has presented a single-peak pattern during a year,and the difference of quarterly precipitation is very obvious.What＇s more,the annual variation of precipitation is bigger and presents increasing tendency totally;（2） annual mean runoff depth is 814.3 mm,which monthly variation has presented a single-peak pattern during a year,and the difference of quarterly runoff depth is very obvious.What＇s more,the anuual variation of runoff depth is bigger and presents increasing tendency totally;（3） runoff depth changes are closely correlated with precipitation variations.While annual hydrological precipitation increased or decreased by 10%,annual runoff depth shows 17.8% of positive response.Meanwhile,while anuual hydrological precipitation increased or decreased by 20%（30%）,the corresponding anuual runoff depth shows 35.6%（53.4%）of positive response.关键词
赣西北大坑小流域/降雨/径流/响应Key words
Dakeng Small Watershed in Northwestern Jiangxi Province/rainfall/runoff/response分类
天文与地球科学引用本文复制引用
刘士余,章俊霞,罗志军,陈文波..近50年赣西北大坑小流域径流对降雨的响应[J].水土保持研究,2012,19(1):19-22,4.基金项目
江西省科技支撑计划项目 （）
江西省自然科学基金青年项目 （）
江西省教育厅青年科学基金项目 （）
