黄河干流实际来水量不断减少的成因分析
收稿日期: 2004-01-09
修回日期: 2004-03-10
网络出版日期: 2004-05-25
基金资助
国家自然科学基金重点项目 (50239050); 国家重点基础研究发展规划项目 (G19990436)
Causal Analysis on Actual Water Flow Reduction in the Mainstream of the Yellow River
Received date: 2004-01-09
Revised date: 2004-03-10
Online published: 2004-05-25
Supported by
National Natural Science Foundation of China, No.50239050; Major State Basic Research Development Program of China, No.G19990436
刘昌明,张学成 . 黄河干流实际来水量不断减少的成因分析[J]. 地理学报, 2004 , 59(3) : 323 -330 . DOI: 10.11821/xb200403001
In recent 10 years, actual water flow in the mainstream of the Yellow River have been decreasing, ranging from 20% to 65% compared with the previous average inflow. THe cut-off of the lower Yellow River in successive years in the 1990s has attracted the world's attention. According to the previous studies and observational data, this paper analysed quantitatively actual water flow reduction and its root causes in the mainstream of the Yellow River based on the characteristics in climate change (eg. precipitation variation), impact of human activities (eg. constant increase in water use for national economy), and eco-environmental water demand. Results showed that actual water flow reduction was mainly caused by climate change (75%) in the upper Yellow River while it was affected by human activities (57%) in the middle reaches (Hekouzhen-Huayuankou section) especially since the late 1970s.
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