A study on coupling coordination of resources and environmental carrying capacity and high-quality development based on TOPSIS-VHSD model in Gansu Province, China
Objective The study aims to investigate the spatiotemporal evolution characteristics and driving mechanisms of the relationship between resource and environmental carrying capacity (RECC) and high-quality development (HQD), providing a foundation for ensuring coordinated human-land development and sustainable growth in Gansu Province. Methods This study employed the technique for order preference by similarity to ideal solution (TOPSIS)-vertical and horizontal scatter degree (VHSD) model, a modified coupling coordination model, spatial econometric models, and Geodetector to systematically analyze the coupling coordination degree and driving factors of RECC and HQD in Gansu Province from 2013 to 2023. Results (1) The RECC and HQD levels in Gansu Province increased from 0.647 9 and 0.377 8 in 2013 to 0.692 9 and 0.546 6 in 2023, respectively. Their spatial distribution pattern exhibited a reciprocating movement along the “southeast-northwest” axis centered on Lanzhou City. (2) The coupling coordination degree in Gansu Province improved from barely coordinated to moderately coordinated, showing a decreasing trend from the northwest to the southern regions. By 2019, the coupling coordination status of all cities within the province had transitioned to primary coordination and continued to improve, while spatial correlation gradually shifted from a dispersed pattern to a more clustered structure. (3) Detection results indicated that innovation and water environment subsystems were the primary driving factors of the coupling coordination degree. Conclusion The TOPSIS-VHSD model effectively reveals regional disparities in RECC and HQD levels in Gansu Province and indicates that the current coupling coordination degree remains relatively low. To effectively promote the synergistic development of RECC and HQD, it is recommended that Gansu Province continue to pursue innovation-driven development and strengthen water environment improvements.
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