Separation of the impacts of climate change and human activity on runoff variations
- Publication Type:
- Journal Article
- Hydrological Sciences Journal, 2015, 60 (2), pp. 234 - 246
- Issue Date:
© 2014, © 2014 IAHS. Abstract: A practical approach to separate the impact of the processes of climate change (CC) and human activities (HA) on streamflow is presented. A non-parametric Mann-Kendall-Sneyers test, combined with moving t test and Yamamoto methods, was used to recognize abrupt change points in the runoff time series to determine a baseline period. A new algorithm to separate CC and HA influence on streamflow was deduced based on the climate elasticity concept. Application to the Chao River, China, shows that CC imposed a positive impact on streamflow in this region (25%, on average), while HA exerted a continuous negative impact of –75% in the period after the 1950s. These results are of great use in understanding the variation of CC and HA impacts under different human development patterns.
Please use this identifier to cite or link to this item: