文献类型：期刊文章

作　　者：杨美临[1] 范晓梅[2]

机构地区：[1]云南省建设项目环境审核受理中心,云南昆明650032 [2]兰州大学资源环境学院,甘肃兰州730000

出　　处：《Meteorological and Environmental Research》

年　　份：2010

卷　　号：1

期　　号：6

起止页码：91-94

语　　种：中文

收录情况：CAS、CSA、PROQUEST、外刊、普通刊

摘　　要：With the impact of climate change and the increasing intensity of human activities,the hydrological regime had changed,including annual runoff distribution,which was related with water resources management and ecological construction. Based on the monthly runoff data for more than 40 years of the Beidao,Xianyang,Huaxian station on Weihe Basin,the annual distribution characteristics of runoff were studied. Several indices related to attributes of uneven,concentrate degree and variation amplitude were calculated,and the results showed that there had obvious fresh and drought seasonal changes in 1990s. The annual runoff distribution had changed a lot,mainly because of runoff decrease in the wet season. The Huaxian station,which locates at the upper reaches,had a higher unevenness,concentration and relative variation rate than that of the Beidao and Xianyang station.

关 键 词：Weihe Basin  RUNOFF Annual distribution  China  

分 类 号：P333.1]