中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Temporal variation of river flow renewability in the middle Yellow River and the influencing factors

文献类型:EI期刊论文

作者Xu Jiongxin
发表日期2005
关键词Dams Earth atmosphere Geographical regions Hydrology Precipitation (chemical) Rivers Soil conservation Temperature distribution
英文摘要In the past 30 years, the measured annual river flow of the Yellow River has declined significantly. After adding the diverted water back to get the 'natural' annual river flow, the tendency of decrease can still be seen. This indicates that the river flow renewability of the Yellow River has changed. The river flow renewability is indexed as the ratio of annual 'natural' river flow to annual precipitation over a river drainage basin, where the 'natural' river flow is the measured annual river flow plus the annual 'net' water diversion from the river. By using this index, based on the data from the drainage area between Hekouzhen and Longmen stations on the middle Yellow River, a study has been made of the river flow renewability of the Yellow River in the changing environment of the past 50 years. The river flow renewability index (Irr) in the drainage area between Hekouzhen and Longmen in the middle Yellow River basin has been found to decline significantly with time. In the meantime, annual precipitation decreased, annual air temperature increased, but the area of water and soil conservation measures has been increased. It has been found that Irr is positively correlated with the areal averaged annual precipitation, but negatively correlated with annual air temperature. There is close, negative correlation between Irr and the area of water and soil conservation measures including land terracing, tree and grass planting and checkdam building, implying that water and soil conservation measures have reduced the river flow renewability. Copyright © 2005 John Wiley & Sons, Ltd.
出处Hydrological Processes
19期:9页:1871-1882
收录类别EI
语种英语
源URL[http://ir.igsnrr.ac.cn/handle/311030/24476]  
专题地理科学与资源研究所_历年回溯文献
推荐引用方式
GB/T 7714
Xu Jiongxin. Temporal variation of river flow renewability in the middle Yellow River and the influencing factors. 2005.

入库方式: OAI收割

来源:地理科学与资源研究所

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