%0 Journal Article
%T Multple time scales analysis and cause of runoff changes of the upper and middle reaches of the Yellow River<br>黄河上中游天然径流多时间尺度变化及动因分析
%A JIANG Xiao-hui
%A LIU Chang-ming
%A HUANG Qiang
%A <br>蒋晓辉
%A 刘昌明
%A 黄强
%J 自然资源学报
%D 2003
%I 
%X Because of the influence of climate change and human activities,runoff change has oc-curred.This paper analyzes the natural runoff series of the upper and middle reaches of the Yel-low River with the theory of wavelet transformation,reveals multi-time scale changes rule of runoff,and discusses the influencing factors of runoff multi-time scale changes.The results showed that climatic conditions such as precipitation mainly controlled river runoff variations.But varia-tions in drainage basin underlying surface and local climate factor brought by human activity af-fected natural annual runoff.The results are important to know runoff changes and to exploit wa-ter resources of the upper and middle reaches of the Yellow River.
%K Yellow River
%K runoff changes
%K multi-time
%K scale
%K wavelet analysis<br>黄河上游
%K 黄河中游
%K 天然径流
%K 时间尺度变化
%K 小波分析
%K 水资源管理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=4DCB9A3AF3395AF0101DE5302EF3C300&aid=8EE9B455E6EC34AC&yid=D43C4A19B2EE3C0A&vid=13553B2D12F347E8&iid=0B39A22176CE99FB&sid=E22B6B8FE86DD8F9&eid=2922B27A3177030F&journal_id=1000-3037&journal_name=自然资源学报&referenced_num=34&reference_num=6