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- Title
Streamflow into Beijing and Its Response to Climate Change and Human Activities over the Period 1956–2016.
- Authors
Mu, Xing; Wang, Hao; Zhao, Yong; Liu, Huan; He, Guohua; Li, Jinming
- Abstract
Streamflow is likely affected by climate change and human activities. In this study, hydro-meteorological data from six rivers upstream of Beijing, namely, the Yongdinghe, Baihe, Heihe, Chaohe, Juhe, and Jumahe Rivers, were analyzed to quantify the spatial and temporal variability of streamflow and their responses to climate change and human activities over the period of 1956–2016. The Mann–Kendall test and moving t-test were used to detect trends and changing points of the annual streamflow. Results showed that the streamflow into Beijing experienced a statistically significant downward trend (p < 0.05), abruptly changing after the early 1980s, owing to climate and human effects. The climate elasticities of the streamflow showed that a 10% decrease in precipitation would result in a 24.5% decrease in total streamflow, whereas a 10% decrease in potential evapotranspiration would induce a 37.7% increase in total streamflow. Human activities accounted for 87% of the reduction in total streamflow, whereas 13% was attributed to climate change. Lastly, recommendations are provided for adaptive management of water resources at different spatial scales.
- Subjects
BEIJING (China); CLIMATE change; STREAMFLOW; WATER supply; ACTIVITY-based costing; WATER management; METEOROLOGICAL precipitation
- Publication
Water (20734441), 2020, Vol 12, Issue 3, p622
- ISSN
2073-4441
- Publication type
Article
- DOI
10.3390/w12030622