Response of streamflow to climate change and human activity in Xitiaoxi river basin in China
Article first published online: 17 OCT 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Volume 28, Issue 1, pages 43–50, 01 January 2014
How to Cite
Zhang, C., Zhang, B., Li, W. and Liu, M. (2014), Response of streamflow to climate change and human activity in Xitiaoxi river basin in China. Hydrol. Process., 28: 43–50. doi: 10.1002/hyp.9539
- Issue published online: 16 DEC 2013
- Article first published online: 17 OCT 2012
- Accepted manuscript online: 5 SEP 2012 12:13PM EST
- Manuscript Accepted: 20 AUG 2012
- Manuscript Received: 20 NOV 2011
- land use change;
- climate change;
- streamflow trends;
- moving t-test
In recent years, the Xitiaoxi river basin in China has experienced intensified human activity, including city expansion and increased water demand. Climate change also has influenced streamflow. Assessing the impact of climate variability and human activity on hydrological processes is important for water resources planning and management and for the sustainable development of eco-environmental systems. The non-parametric Mann–Kendall test was employed to detect the trends of climatic and hydrological variables. The Mann–Kendall–Sneyers test and the moving t-test were used to locate any abrupt change of annual streamflow. A runoff model, driven by precipitation and potential evapotranspiration, was employed to assess the impact of climate change on streamflow. A significant downward trend was detected for annual streamflow from 1975 to 2009, and an abrupt change occurred in 1999, which was consistent with the change detected by the double mass curve test between streamflow and precipitation. The annual precipitation decreased slightly, but upward trends of annual mean temperature and potential evapotranspiration were significant. The annual streamflow during the period 1999–2009 decreased by 26.19% compared with the reference stage, 1975–1998. Climate change was estimated to be responsible for 42.8% of the total reduction in annual streamflow, and human activity accounted for 57.2%. Copyright © 2012 John Wiley & Sons, Ltd.