Two-Step Measurement of Water–Energy–Food Symbiotic Coordination and Identification of Key Influencing Factors in the Yangtze River Basin

Abstract

With the intensification of people’s production and life behaviors, the systemic risks of water, energy and food in the Yangtze River Basin have become increasingly prominent, which has become a bottleneck for sustainable development of social, economic and ecological in the basin. Therefore, studying the symbiotic coordination between water, energy and food is of great significance to promoting regional sustainable development. First, from the perspective of water–energy–food symbiosis, with the water–energy–food ecosystem conceptual model as the nexus, the two-step measurement model of the symbiotic index and the symbiotic level index is used to study the water–energy–food symbiosis of the Yangtze River. Then, we use the BP-DEMATEL-GTCW model to identify the key influencing factors that affect the symbiotic security of the water–energy–food ecosystem. In this research, it is found that the average value of the symbiotic degree of the water–energy–food ecosystem of the 11 provinces or municipalities in the Yangtze River Basin only reached the risk grade. It can also be seen from the identification results of key influencing factors that energy microsystem-related indicators have a greater impact on the symbiotic development of the entire WEF ecosystem. Therefore, special attention needs to be paid to increasing energy sources and reducing expenditure. Relevant departments need to effectively develop primary energy production and expand energy-saving investment through multiple channels to expand energy self-sufficiency and ultimately promote the coordinated and effective development of water, energy and food in the Yangtze River Basin.

Assessment and Prediction of Water Resources Vulnerability Based on a NRS-RF Model: A Case Study of the Song-Liao River Basin, China

“…Among them, this paper uses the game weighting method [ 74 ] to determine the constructed water resource vulnerability indicator weights and uses the calculated weights to calculate the comprehensive evaluation value of natural vulnerability, man-made vulnerability and vulnerability of carrying capacity. The calculation steps are as follows: Step 1 : Perform non-dimensional standardization on the original data.…”

“…The calculation is relatively simple, and it is also suitable for the actual situation with a small amount of sample data, so it is more suitable for this paper. Among them, this paper uses the game weighting method [74] to determine the constructed water resource vulnerability indicator weights and uses the calculated weights to calculate the comprehensive evaluation value of natural vulnerability, man-made vulnerability and vulnerability of carrying capacity. The calculation steps are as follows:…”

Analysis of the Dynamic Change of the Environmental Carrying Capacity and Influencing Factors of Mature Coal Cities

“…The results indicated that ecological factors are the most important guarantee of urban ecological security in this region [24]. Chen et al used BP-DEMATEL model to identify the key factors affecting the symbiotic security of water-energy-food ecosystem in the Yangtze Basin, and proposed that this area should pay more attention to energy conservation [25].…”

Large-scale group-hierarchical DEMATEL method for complex systems

“…In the knowledge economy era, the number of influence factors for complex organizations and systems is increasing, and the complex interrelationships between factors lead to complexity and uncertainty in management of complex organizations and systems. Accurately identifying key factors and clarifying the importance between factors have become important research topics in organizational management and decision-making, leading to the emergence of a series of evaluation and decision-making methods [1][2][3].…”