Abstract
AbstractWater can be redistributed physically and virtually. We explored water allocation optimization to mitigate water stresses by constructing a physical–virtual dual water system and optimizing the 1987 Yellow River water allocation scheme. We calculated the virtual water volume, identified the virtual in-basin, out-of-basin, and export water volumes, and compared the total regional water demand (i.e., combined physical and virtual water volumes) with regional water planetary boundaries to optimize basin water allocation schemes. Virtual water accounted for > 90% of the total regional demands, whereas physical flows did not significantly impact them. Moreover, allocation quotas for Qinghai and Inner Mongolia should be reduced by 0.113 and 1.005 billion m3, respectively, for sustainability. Furthermore, improving the efficiency of water-intensive sectors and limiting virtual water outflows from heavy industry to out-of-basin sectors are vital to water intensification. Increased attention should be directed toward physical–virtual water demands than the current focus on supply-oriented water allocation.
Funder
the National Science Foundation of China
the Harbin Institute of Technology 2021 Student Future Technology Innovation Team Building Project
Publisher
Springer Science and Business Media LLC
Reference62 articles.
1. Wang, A. & Gao, C. Study on the relationship of spatio-temporal matching between water resources and economic development factors in the Yellow River Basin. Fresenius Environ. Bull. 27, 6591–6597 (2018).
2. Wang, Z., Yang, J., Deng, X. & Lan, X. Optimal water resources allocation under the constraint of land use in the Heihe River Basin of China. Sustainability 7, 1558–1575 (2015).
3. Almazán-Gómez, M. A., Duarte, R., Langarita, R. & Sánchez-Chóliz, J. Effects of water re-allocation in the Ebro river basin: A multiregional input-output and geographical analysis. J. Environ. Manage. 241, 645–657 (2019).
4. H, H., G, T., Z, W. & Q, X. Cross-regional ecological compensation under the composite index of water quality and quantity: A case study of the Yellow River Basin. Environ. Res. 238, 117152 (2023).
5. Zhou, Z., Sun, X., Zhang, X. & Wang, Y. Inter-regional ecological compensation in the Yellow River Basin based on the value of ecosystem services. J. Environ. Manage. 322, 116073 (2022).