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Chicago/Turabian Style Shi, Jiahao, Huan Yang, Fuqiang Wang, Di Sun, and Yushan Run. 2023. "Comprehensive Evaluation and Coupled Coordinated Development Study of Water–Economic–Ecological Systems in the Five Northwestern Provinces of China" Water 15, no. 24: 4260. https://doi.org/10.3390/w1...
The closer CCD gets to 1, the higher the degree of harmony and mutual support between the two subsystems; otherwise, they would be difficult to adapt to each other. The CCD values are divided into six levels by referencing the previous studies [23,24]. The coupling state is defined as ...