%0 Journal Article
%T Exploration of Eco-environment Range in the Source Regions of the Yangtze and Yellow Rivers<br>长江黄河源区生态环境范围的探讨
%A DING Yongjian
%A YANG Jianping
%A LIU Shiyin
%A CHEN Rensheng
%A WANG Genxu
%A SHEN Yongping
%A WANG Jian
%A XIE Changwei
%A ZHANG Shiqiang
%A <br>丁永建
%A 杨建平
%A 刘时银
%A 陈仁升
%A 王根绪
%A 沈永平
%A 王建
%A 谢昌卫
%A 张世强
%J 地理学报
%D 2003
%I 
%X On the basis of geographical and hydrological ranges definition, four principles are determined, which are the foundation for deciding the extents of the source regions of the Yangtze and Yellow rivers, in this paper. Under the comprehensive analysis of topographical characteristics, climate conditions, vegetation distribution and hydrological features, ranges of the source regions of eco-environment study are defined. The Dari hydrological station is the eastern boundary point of the source region of the Yellow River which drains an area of 4.49×104 km2. The eastern boundary point is the convergence point of the Nieqia and the Tongtian rivers in the source region of the Yangtze River, which drains an area of 12.24×104 km2.
%K the source regions of the Yangtze and Yellow rivers
%K eco-environment
%K extent<br>江河源区
%K 生态环境
%K 长江
%K 黄河
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=869B153A4C6B5B85&jid=F7B5B947C24B9D649491012214E4BEF4&aid=0A6BFA43B972E6B7&yid=D43C4A19B2EE3C0A&vid=9FFCC7AF50CAEBF7&iid=E158A972A605785F&sid=89389F643CA3F778&eid=E3D3D8D1B650AE1E&journal_id=0375-5444&journal_name=地理学报&referenced_num=25&reference_num=44