Journal
HYDROLOGICAL PROCESSES
Volume 24, Issue 6, Pages 749-757Publisher
WILEY
DOI: 10.1002/hyp.7505
Keywords
baseflow; the Yangtze River; extreme drought; human interference
Categories
Funding
- Funds for Ministry of Science and Technology of China [SKLEC: 2008KYYW01]
- Creative Research Groups of China [40 721 004]
- Programme strategic scientific alliances between China and the Netherlands [2008DFB90240]
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Attention has been given to baseflow in large rivers, but up to now, no study on baseflow for the Yangtze River in combination with extreme drought and extensive human activities has been carried out. Discharge data in 2000-2005 and in the extreme drought years, 1978 and 2006, at stations along the main stream, lakes and distributaries of the Yangtze River were collected to analyse the features of baseflow in 2006 by using baseflow separation technique, HYSEP. It can be seen that the baseflow relative to the streamflow in 2006 was greater than those in other years. The variation of baseflow discharge in the Upper Yangtze River Stream (UYRS) was larger than that in the Mid-Lower Yangtze River Stream (MLYRS). Human activities in MLYRS are more intensive than that in the UYRS and the baseflow discharge was greater. The baseflow is influenced by the extreme climate and human activities along the Yangtze River with the former being the dominant factor in 2006. The contribution of human interference to baseflow discharge was about 10% in 2006. Copyright (C) 2009 John Wiley & Sons, Ltd.
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