Identifying Optimal Security Management Policy for Water–Energy–Food Nexus System under Stochastic and Fuzzy Conditions

Jing Liu,Yongping Li,Xiao Li

doi:10.3390/w12113268

Jing Liu, Yongping Li + Show 1 more

Open Access

https://doi.org/10.3390/w12113268

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Journal: Water	Publication Date: Nov 21, 2020
Citations: 8	License type: CC BY 4.0

Affiliation: Xiamen University of Technology, Beijing Normal University

Abstract

An interval-stochastic-fuzzy policy analysis model is proposed to generate optimal security management policy for a water–energy–food nexus system of the urban agglomeration under multiple uncertainties. A number of planning policies under interval-stochastic surface water and groundwater conditions are obtained. Ranking scores of all policies in descending order, policy with the highest score is the best choice. Results disclose that (a) interval-stochastic available water resources lead to changing system benefits. (b) The shares of cropland area targets are 2.7% (Xiamen), 42.6% (Zhangzhou), and 54.7% (Quanzhou). (c) Different available water scenarios result in varied irrigation patterns. (d) Surface water takes a high fraction of the total water supply (about [71.34, 73.68]%), diesel agricultural machinery service more than 60% of the total cropland. (e) Zhangzhou contributes about 50.01% of total TN and TP emissions, while Quanzhou contributes about 50.61% of total carbon emission. (f) Security level of policies would change with the varied σ and α values, due to the risk attitudes of policy makers. (h) Sweet potato and others are the crops with the highest safety performance; (i) Zhangzhou is the city with highest comprehensive safety performance.

Highlights

The water–energy–food nexus system represents a method to enhance the security and efficient management taking the inherent interactions into account [1]
Increasing resource interlinks due to growing scarcities, resources supply crises, and failures of sector-driven management strategies justified the need for the cross-sectoral integration of the resources [5]
System benefit would increase by [2.34, 165.16]% from the lowest value to the highest value. (b) The shares of cropland area targets are 2.7% (Xiamen), 42.6% (Zhangzhou), and 54.7% (Quanzhou). (c) Early rice and late rice are main water consumers. (d) More than 60% of the total cropland area were served by diesel agricultural machinery

Summary

Introduction

The water–energy–food nexus system represents a method to enhance the security and efficient management taking the inherent interactions into account [1]. A city often takes advantage of resources outside the city boundary, and generates adverse environmental impacts inside other borders of cities. The idea behind the nexus is to look at the interdependent resource issues of water, energy, and food using an integrated framework in scientific analysis and policymaking. It is important to encompass the relationship between different resources in different cities, which formulate intricate water–energy–food nexus (WEF) systems. Global WEF securities (e.g., improved WEF policies lead to adaptive ecosystem and resource governance and management, in turn achieving sustainability outcomes) are facing unprecedented challenges from the fast speed of urbanization, increment of food demands, shortage of

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Conclusion