密云县红门川流域降水影响下径流的阶段性和不均匀性研究  

STAGE AND INHOMOGENEITY OF RUNOFF INFLUENCED BY PRECIPITATION ON HONGNENCHUAN BASIN IN MIYUN COUNTY

作　　者：朱丽[1,2] 秦富仓[2] 姚云峰[2] 叶俊道[2] 苏江[2] 

机构地区：[1]包头师范学院资源与环境学院,包头014030 [2]内蒙古农业大学生态环境学院,呼和浩特010019

出　　处：《内蒙古农业大学学报（自然科学版）》2011年第4期65-70,共6页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：国家"十一五"科技计划课题(No:2006BAD03A0201)

摘　　要：为研究北京市密云县水文生态变化过程,收集红门川流域1990a-2006a逐日降水与径流资料,进行统计分析。结果表明:研究区多年平均降水在600mm左右,1990a～2006a降水相对较少,总体呈缓慢减少的趋势。1990a～2006年红门川流域径流量年际变化波动很大,平均年径流量1609.00万m3,总体呈明显的减少趋势。径流全部集中在汛期,即6月～9月。且具有明显的阶段性,1990a～1998a径流量较大,径流系数为0.39;而后期相对较小,径流系数为0.09,减少了332.79%。就径流的年内分布而言,1998a～2006a阶段的径流年内不均匀性较大,而1990a～1998a的径流年内不均匀性较小。With the purpose of studying the hydrological-ecological changing process and helping the further statistical analysis of Miyun county in Beijing,this paper focus on collecting the data of water precipitation and runoff of Hongmenchuan Basin from 1990 to 2006.The results showed that the average annual precipitation of the target is about 600 mm per year and relatively less than others.From 1990 to 2000,the precipitation of the area gradually deCreased.The annual variation of Runoff fluctuated intensely from 1990 to 2006 and deCreased significantly.The average annual runoff of the target is 16090000 m3 and mainly distributes from June to September.Besides above,the periodity of inter-annual runoff appears obviously.Runoff is rich（runoff coefficient=0.39） in 1990～1998,but it occurred much more less（runoff coefficient=0.09） thereafter.As to the annual distribution of runoff,the annual inhomogeneity in 1990-1998 is comparatively less while in 1998-2006 is comparatively more.

关 键 词：降水 径流 阶段性 不均匀性 红门川流域 

分 类 号：P339[天文地球—水文科学]