Abstract
Since the 21st century, China’s rapid urban development has had profound impacts on the regional eco-environment and posed severe threats to regional sustainable development. In order to scientifically evaluate the coupling relationship between urban development and the eco-environment in the Guanzhong region, in this paper, by combining nighttime lighting data and MODIS data in 2001, 2010 and 2018, we applied an overall coupling model and a coordination model to discuss the spatial–temporal coupling and coordination relationship between urban development and the eco-environment. The results showed the following: (1) From 2001 to 2018, the urbanization development in the Guanzhong region significantly improved and the links between cities were continuously strengthened, but the degree of contact still needed to be improved. (2) The eco-environment quality in the Guanzhong region slightly increased, but the overall level was low. The structure of the eco-environment quality grade changed greatly, and “Good” grades changed to “Very Good”. (3) During 2001–2018, the overall coupling situation between urban development and the eco-environment strengthened and the degree of coordination increased. The coupling coordinator subtype gradually transformed from system balanced development into system balanced development, the ecology lag type, and the urban development lag type coexisting phenomenon. The results of the study suggest that future urban development planning and ecological protection policies need to take the coordinated coupling between urban development and the eco-environment into account.
Highlights
With the rapid development of China’s social economy, the process of urbanization is accelerating
This work used ArcGIS to create a 3 km × 3 km grid, and used grid cells to extract the average value of CNTL and remote sensing ecological index (RSEI) pixels to realize grid data gridding in the Guanzhong region
It is an indisputable fact that the rapid development of urbanization and the replacement of the original natural surface by urban construction land will have a negative impact on the regional ecological environment [42]
Summary
With the rapid development of China’s social economy, the process of urbanization is accelerating. The expansion of the urban scale changes the physical properties of the urban underlying surface, and an artificial impervious surface replaces the original natural surface [2]. This is an important reason for the increasingly serious urban ecological environment problems, such as cultivated land reduction, air pollution, water pollution, and urban heat islands [3]. The eco-environment problems caused by urban development have become the focus of the international community [4]. It is of great significance to explore the interaction and spatial relationship between urban development and the eco-environment to improve the urban ecological environment, optimize the quality of urbanization, and realize regional sustainable development
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