Spatial-temporal evolution of coupling relationship between land development intensity and resources environment carrying capacity in China

Land development poses challenges to the sustainable use of resources and environmental health in regions. This study explores the coupling relationship and its spatial-temporal evolution trend between land development intensity and resources environment carrying capacity of 31 provinces in China from 2005 to 2017. The information entropy method, coupling degree model, and coupling coordination degree model are used to calculate the index weight, coupling degree, and coupling coordination degree. The results show that: (1) Three change types of resources environment carrying capacity are presented with land development intensity increasing: first decrease and then increase; first increase and then decrease; and alternating fluctuations. (2) The proportion of construction land, GDP per land, and population density are dominate determinants of land development intensity, while the water resources per capita, energy consumption per unit of GDP, and per capita cultivated land area are that of resources environment carrying capacity. (3) From the perspective of temporal evolution, both coupling and coordination relationship were found to have continuously strengthened. (4) In terms of spatial evolution, the coupling level presented a constantly narrowing inter-regional gap, and the coordination level has changed from initial two-level differentiation to final regional gap narrowing. These findings can provide evidence in support for integrating land development with resources environmental protection to promote regional coordinated development.

Automated summary

The study found that as land development intensity increases, the carrying capacity of resources environment shows different types of changes; the proportion of construction land, GDP per land, and population density are the main determinants of land development intensity, while water resources, energy consumption, and per capita cultivated land are the main determinants of resources environment carrying capacity; the coupling and coordination relationships have continuously strengthened over time, while the spatial evolution has shown a narrowing inter-regional gap.