首页 | 本学科首页   官方微博 | 高级检索  
     检索      

黄河上游径流变化特征及其影响因素初步分析
引用本文:时兴合,秦宁生,汪青春,钱有海,冯蜀青,杨贵林,刘青春.黄河上游径流变化特征及其影响因素初步分析[J].中国沙漠,2007,27(4):690-697.
作者姓名:时兴合  秦宁生  汪青春  钱有海  冯蜀青  杨贵林  刘青春
作者单位:1. 青海省气候中心,青海,西宁,810001;中国气象局气候开放实验室,北京,100081
2. 青海省气候中心,青海,西宁,810001
3. 青海省气象台,青海,西宁,810001
4. 青海省水文水资源勘察局,青海,西宁,810001
基金项目:国家自然科学基金;国家自然科学基金;中国气象局气候变化专项基金
摘    要: 利用1956—2005年黄河上游水文和气象台站观测的流量、气温、降水资料,用气候诊断方法分析了该地区径流量的年代际演变特征以及影响因子。结果表明:20世纪50—80年代年平均流量呈波动性的上升趋势,90年代至21世纪的前5年年平均流量呈下降趋势。降水量、蒸发量、气温是影响流域流量的主要气象因子,它们的机理完全不同。枯季、雨季降水量与流量分别呈负、正反馈机制,秋季和冬季降水量对次年春夏季的流量有比较明显的调节作用;4—5月(10月)气温与后期5—6月(11月)流量呈负(正)反馈机制;枯季、雨季地表蒸发与流域的河川流量呈负反馈机制,并且消耗的水资源量呈逐年增加的趋势。20世纪90年代以来黄河上游地区河川流量的减少与降水量减少、地表蒸发量增大有关。

关 键 词:径流  变化特征  影响因素  黄河上游
文章编号:1000-694X(2007)04-0690-08
收稿时间:2006-03-02
修稿时间:2006-03-022006-06-12

Analysis on Runoff Variation Characteristics and Influencing Factors in the Upper Yellow River
SHI Xing-he,QIN Ning-sheng,WANG Qing-chun,QIAN You-hai,FENG Shu-qing,YANG Gui-ling,LIU Qing-chun.Analysis on Runoff Variation Characteristics and Influencing Factors in the Upper Yellow River[J].Journal of Desert Research,2007,27(4):690-697.
Authors:SHI Xing-he  QIN Ning-sheng  WANG Qing-chun  QIAN You-hai  FENG Shu-qing  YANG Gui-ling  LIU Qing-chun
Institution:1 .Climate Center of Qinghai Province, Xining 810001, China; 2 .Open Laboratory for Climate Research, China Meteoro logical Administration, Beijing 100081, China; 3 .Meteorological Observatory of Qinghai Province, Xining 810001, China; 4.Hydrology and Water Resource Bureau of Qinghai Province, Xining 810001, China
Abstract:Based on the data of runoff, temperature and precipitation observed in the hydrological and meteorological stations in the upper Yellow River from 1956 to 2005, the inter-decadal variation characteristics of runoff and its influencing factors was analyzed by the climatic diagnosis method. The results indicated that the average runoff from 1950s to 1980s showed undulated increasing trend, and that from the 1990s to the first 5 years of 21st century appeared decreasing tendency. The influencing meteorological factors to runoff mainly comprise precipitation, evaporation and temperature, and they have completely different function mechanisms. There exist negative feedback mechanism between runoff and precipitation in dry season but positive feedback mechanism in rainy season. The precipitation in autumn to winter has quite obvious adjusting function to the runoff of spring to summer in the next year. There exist negative feedback mechanism of runoff between May to June and April to May, but positive feedback mechanism of runoff between November and October. In both dry season and rainy season the surface evaporation appeared negative feedback mechanism between surface evaporation and river runoff, besides, the consumption of water resources had an increasing trend year by year. Since 1990s the runoff in the upper Yellow River has decreased tendency, which related with the decreasing of precipitation and the increasing of surface evaporation.
Keywords:runoff  variation characteristics  influence factors  the upper Yellow River
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《中国沙漠》浏览原始摘要信息
点击此处可从《中国沙漠》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号