Abstract
Underground space development has gradually become an organic part of China’s urban development and construction. Comprehensively developing underground space scientifically and rationally to give full play to its comprehensive benefits is the main problem faced by China’s underground space development at this stage. This research starts with the measurement of the level of urban underground space (UUS) development. This paper constructs a UUS development level measurement indicator system, which is composed of Construction of UUS (D1), urban economic development indicators (D2), and urban population development indicators (D3), which has 12 secondary indicators, and then we use entropy-TOPSIS method to quantitatively evaluate the development level of underground public space in 39 prefecture-level cities and above in my country and analyze its spatial differentiation. The results show that the urban agglomeration has the characteristics of “high-high” cluster distribution with the development level of underground space. However, the overall level of underground space development in China’s major cities is not high and there are apparent differences in the level of UUS development. In terms of spatial distribution, the sustainable development level of cities in the eastern coastal regions of China is relatively high, with towns in the central and northeastern areas ranking second and western towns and northeastern cities ranking the lowest. At the same time, we found that there is a mismatch between the underground space development index and the economic population development index in the evaluation index. Finally, some suggestions are put forward to realize the balanced development of UUS development in our country.
Highlights
Since the reform and opening up, with the rapid development of China’s economy, the amount of underground space development in China’s cities has increased year by year [1]
Urban construction is closely related to urban economic development level, population-scale, and population density. erefore, underground space (UUS) development involves urban development, society, economy, and other aspects and is an auxiliary means for planners to select schemes. erefore, the index system is composed of the UUS construction index (D1), urban economic development index (D2), and urban population index (D3) (Figure 3)
The measurement of UUS development level is composed of UUS construction, economic development, and population development
Summary
Since the reform and opening up, with the rapid development of China’s economy, the amount of underground space development in China’s cities has increased year by year [1]. Since 1997, UUS development regulations have increased year by year (Figure 1). On October 28, 2019, the Global Underground Space Development and Utilization Shanghai Summit released the “Shanghai Declaration” on the global underground space development and utilization. One of the essential topics is: using underground space to save land resources and improve land-use efficiency. Underground space development is to meet current and future human needs for the rapid growth of cities. Conflicts, resource waste, and environmental effects caused by the fragmented story are becoming increasingly prominent. Erefore, promoting the coordinated development of underground spaces in different regions is essential to promote sustainable urban development [2] Conflicts, resource waste, and environmental effects caused by the fragmented story are becoming increasingly prominent. erefore, promoting the coordinated development of underground spaces in different regions is essential to promote sustainable urban development [2]
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