Interactive quantitative modeling and cost optimization of regional sustainable development based on water-energy-food nexus
2022
Wang, Jiangjiang | Wang, Jiahao | Ge, Wenbiao | Xie, Kangzhen
As the critical resources for regional development, water, energy and food (WEF) are highly interdependent. Improving the cognition of the complex interactions of WEF nexus is the top priority of regional sustainable development and decision-making. This paper proposes a novel regional water-energy-food interaction model based on supply and demand to clarify the nexus between WEF resources and its impact on the development of the entire region. An indicator of sustainability index is employed to quantitatively evaluate the interactions between supplies and demands in WEF nexus. The scenario analysis method is used to predict the resources and demands for the future medium and long-term development in a high-tech industrial zone, China, and then the total regional cost is optimized to obtain the suitable development roadmaps. The analysis results indicate that energy is the key to WEF and significant regional development. The collaborative development of WEF, including the supply of external resources, can better promote the sustainability of the region. Appropriate adjustment of energy structures and power generation ratios can not only effectively reduce the total cost, but also control CO₂ emissions. The proposed WEF model with the indicator of sustainability index can quantitatively evaluate the region sustainable development.
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