Abstract
The digital transformation of heavy metal-related enterprises is the only way to improve the ecological capacity of river basins. This study explores the coupling relationship between heavy metal carrying capacity and enterprise digital transformation degree in the middle reaches of the Yangtze River urban agglomeration in 2019. Water quality simulation and data mining techniques were used to construct the material balance linear model-GIS ecological capacity evaluation framework based on ecological capacity theory. Fuzzy DEMATEL (Decision-making and Trial Evaluation Laboratory) and state space model methods were used to analyze the spatial heterogeneity of enterprises' digital transformation degree. The coupling characteristics of heavy metal ecological capacity and enterprise digital transformation degree in the middle reaches of the Yangtze River were obtained by coupling the coordination degree and obstacle degree model. The main conclusions are as follows. (1) The overall environmental capacity of heavy metals shows a spatial pattern of decreasing from the center of the Wuhan urban agglomeration to the surrounding areas. (2) The areas with a high degree of enterprise digital transformation are mainly concentrated in southern Anhui Province, eastern Jiangxi Province and the Dongting Lake Economic circle; in contrast, the areas with a low degree are mainly distributed in northern Anhui Province, central and eastern Hubei Province and southern Hunan Province. (3) On the whole, the coupling degree of heavy metal ecological capacity and enterprise digital transformation has obvious spatial differentiation. High (the degree of ecological carrying capacity)-high (the degree of digital transformation of heavy metal enterprises), high-low, low-high and low-low accounted for 24.48%, 47.1%, 18.47% and 9.95% of the total study area, respectively. The ecological carrying capacity of the river basin was highly related to the development stage of the digital transformation of heavy metal enterprises, and the two have a significant degree of coupling.
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