Climate change impact on water resources is a global hot issue in recent years. According to the latest research progress, a new meaning of water resources vulnerability (WRV) and concept of adaptive water management were proposed. For evaluating the WRV under changing environment in Huai River Basin (HRB) as the sixth largest river basin in China, a quantitative assessment model coupling with exposure, droughts risk, sensitivity, adaptability of water resources system was established. Besides, adaptive regulation of WRV under five scenarios of water demand control, water efficiency control, pollutant restriction of water function zone, the minimum water demand control of ecosystem and integrated control were analyzed in this study. The results indicated that the regions with the greatest value of WRV was Xiaoqing River in the benchmark year (2000) and the most unfavorable scenarios in which 33% and 87% of HRB were the extreme vulnerable regions. Among all adaptive regulation scenarios, the most sensitive scenario was the integrated control, followed by controlling of water function zones compliance, water use efficiency, water demand and the minimum water demand control of ecosystem. This study will provide scientific foundation to integrated water resources management in China.
- adaptive regulation
- climate change
- Huai River Basin
- water resources vulnerability
- First received 21 January 2016.
- Accepted in revised form 15 June 2016.
- © IWA Publishing 2016