%0 Journal Article
%T Runoff of the upper Yellow River above Tangnag:characteristics, evolution and changing trends<br>
%A LAN Yong-chao
%A KANG Er-si
%A MA Quan-jie
%A ZHANG Ji-shi
%A CHEN Ren-sheng
%A <br>
%J 地理学报
%D 2001
%I 
%X Runoff and its evolution, based on hydrometeorological data from surface measurement stations, are analyzed for the upper reaches of the Yellow River above Tangnag. Some mathematical statistical models, for example, Period Extrapolation-Gradual Regression Model, Grey Topology Forecast Model and Box-Jinkins Model, are applied in predicting changing trends on the runoff. The analysis indicates that the runoff volume in the upper Yellow River above Tangnag is ending a period of extended minimum flows. Increasing runoff is expected in the coming years.
%K runoff
%K upper Yellow River
%K trend
%K forecast<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=869B153A4C6B5B85&jid=F7B5B947C24B9D649491012214E4BEF4&aid=3D1D083C8753FC3385FF88C3172BD9DE&yid=14E7EF987E4155E6&vid=708DD6B15D2464E8&iid=38B194292C032A66&sid=E42CAFB11D4BE21A&eid=8ED630AD8C61FAE8&journal_id=0375-5444&journal_name=地理学报&referenced_num=0&reference_num=0