Abstract
Regional water-energy-food (WEF) synergetic development evaluation is an important prerequisite for promoting regional cooperative security development effectively. Under the framework of regional WEF nexus system, the concept of regional WEF synergetic development was proposed based on the synergetic theory, and evaluation index system was constructed from the aspects of function, structure and efficiency. The development degree was evaluated by measuring the gap between the existing state and the ideal state based on the distance synergy method. Considering the synergy relationship between each subsystem, the grey correlation analysis method was used to determine the pull factors between each subsystem, and then the synergy degree was calculated. The synergetic development degree was calculated by integrating development degree and synergy degree. This method was used to analyse the WEF synergy development degree of Ningxia Hui Autonomous Region in China from 2001 to 2015. The results show that the WEF synergetic development of Ningxia was increasing but still at a low level, food subsystem had significant pull function to the water and energy subsystems. While improving the development degree of each subsystem, Ningxia needs to strengthen the collaborative development among the subsystems to improve the synergetic development of regional water, energy and food.
Highlights
Water, energy and food are the necessary resources for human survival, and the “slow variables” or “defect” to regional sustainable development system, for the regional sustainable development is restricted by the integrated changes of Water, energy and food
Resource security is the fundamental guarantee of regional sustainable development, and regional water-energy-food (WEF) synergetic development evaluation is an important prerequisite for promoting regional cooperative security development effectively
There are two kinds of quantitative analysis includes thoughts: one is that the system synergy extent is reflected by testing the synergetic effects from synergetic factors, for instance, Peng Deng[4], Bo Bi[5], etc. implemented the couplingcoordinating model to research the couplingcoordinating evolution features of WEF system; the other one is that evaluating the system synergy degree by measuring the gap between the current status and ideal status, or estimating the progress extent comparing with the basic status, such as Shaoming Peng[6], etc., who proposed the computation method of basin WEF comprehensive operation based on the distance synergy thought, and presented the WEF synergetic optimal distribution in Yellow River Basin with the optimal objective of comprehensive regulation
Summary
Energy and food are the necessary resources for human survival, and the “slow variables” or “defect” to regional sustainable development system, for the regional sustainable development is restricted by the integrated changes of Water, energy and food. Implemented the couplingcoordinating model to research the couplingcoordinating evolution features of WEF system; the other one is that evaluating the system synergy degree by measuring the gap between the current status and ideal status, or estimating the progress extent comparing with the basic status, such as Shaoming Peng[6], etc., who proposed the computation method of basin WEF comprehensive operation based on the distance synergy thought, and presented the WEF synergetic optimal distribution in Yellow River Basin with the optimal objective of comprehensive regulation Both the qualitative analysis and the quantitative analysis are used in this study, the regional WEF synergy development concept was proposed based on the qualitative analysis of WEF system construction; evaluation index system of the WEF synergy development was established, which was integrated with grey correlation method and distance synergy method to put forward the quantitative evaluation method of regional WEF synergy development; the Ningxia Hui Autonomous Region is as study case to empirical analysis
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