Your search found 2 records
1 Xu, Z.; Yao, L.. 2022. Opening the black box of water-energy-food nexus system in China: prospects for sustainable consumption and security. Environmental Science and Policy, 127:66-76. [doi: https://doi.org/10.1016/j.envsci.2021.10.017]
Water resources ; Energy consumption ; Food security ; Nexus ; Energy generation ; Water extraction ; Socioeconomic aspects ; Sustainable development ; Economic development ; Trends / China / Beijing / Tianjin / Hebei
(Location: IWMI HQ Call no: e-copy only Record No: H050784)
(4.05 MB)
Water-energy-food (WEF) nexus system enables to examine the implications for sustainability. Inevitably, shocks from socioeconomic subsystems would impact the stability and reliability of the WEF nexus system. This paper aims to identify the reasons for changes in water withdrawal, energy consumption, and crop consumption, and uncover differentiated effects from both the national and provincial perspectives, and finally offer the main strategies in China that balance socioeconomic development and resource-saving from the consumption perspective. Empirical results in China from 2011 to 2017 show that (1) the reduction of per capita energy consumption leads to a decrease in water withdrawal, while increased population and water withdrawal intensity in energy sectors have adverse effects on diminishing water withdrawal. (2) The decrease in energy consumption mainly results from improved energy use efficiency for the whole period. (3) Reduction in national crop consumption is mainly caused by the decline in energy consumption per person over the years, which implies a positive effect of food-energy nexus effect on the decrease in crop consumption. (4) Spatially-temporarily contribution rates of drivers offer implications to the implementation of resource-saving and sustainability in the future. Directions and magnitudes of driving forces are different from the sub-nation perspective, hence, finally takes Beijing-Tianjin-Hebei (BTH) region as an example, we analyze clearly the relative planning and reports and propose several pathways to accelerate the sustainable development in the BTH region.
2 Cai, X.; Yao, L.; He, X. 2022. Assessing water options trading willingness in irrigation areas with heterogeneous resource endowments. Journal of Hydrology, 613(Part B):128471. [doi: https://doi.org/10.1016/j.jhydrol.2022.128471]
Water markets ; Options trading ; Irrigated sites ; Water demand ; Water resources ; Water rights ; Arable land ; Land resources ; Agriculture ; Forecasting ; Risk ; Crops ; Case studies
(Location: IWMI HQ Call no: e-copy only Record No: H051424)
(4.49 MB)
Water options trading (WOT) is an effective way to promote efficient allocation of water resources and to manage risks of water scarcity. Scientific prediction information can help hedge the risks brought by uncertain hydrological and market environment to WOT. However, confronting with the prediction information, irrigation areas characterizing with heterogeneous resource endowments often exhibit different willingness in WOT. Therefore, through using prediction information, this study provides a novel perspective to assess the water option trading willingness (WOTW) in irrigation areas with heterogeneous resource endowments. Firstly, according to multi-objective optimization and expected utility theory, a three-phase dynamic adjustment model involving tradable water prediction, expected return analysis of WOT, and WOTW calculation is constructed and integrated. Then, based on three sets of comparative analysis data from 2014 to 2020 in five irrigated areas, the influence mechanism of heterogeneous resource endowments on the evolution, intensity and improvement potential of the WOTW is analyzed and the option contract with optimal water demand to motivate the WOTW in heterogeneous irrigation areas is proposed. The results of the case study suggest that the WOTW is largely affected by the matching equilibrium of water and arable land resources in irrigation areas. Larger water resource endowment per unit of arable land indicates smaller fluctuation of the WOTW evolution and greater intensity and improvement potential of the WOTW. Conversely, larger inter-annual variation of the water resource endowment per unit of arable land implies more inclination of the WOTW intensity in irrigation areas to be weakened, in which situation the irrigation areas prefer the option contracts with less water demand. This study provides a new method and theoretical foundation for the optimal allocation and options trading of agricultural water resources.
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