| Abstract: | This paper adopts the expansion intensity index, equal sector method, spatial auto-correlation, PCA-STIRPAT model, and geographic detectors to quantitatively reveal the characteristics and spatial-temporal driving factors of the construction land growth pattern in the CZT metropolitan area from 1990 to 2018. The results show that: (1) The construction land of CZT metropolitan area expanded slowly from 1990 to 2000, expanded rapidly from 2000 to 2010, and expanded slowly from 2010 to 2018. In the three stages, the main expansion directions of the construction land in the CZT metropolitan area are different. The direction of expansion of the Changsha metropolitan area changed from northeast to southwest, the expansion direction of Zhuzhou metropolitan area changed from southwest to west, and the expansion direction of Xiangtan metropolitan area changed from south to north. It can be seen that under the influence of the integrated construction of the CZT urban agglomeration, the expansion direction of the three cities tends to move closer to the central intersection. (2) From 1990 to 2018, the expansion of construction land in the CZT metropolitan area showed an overall trend of agglomeration. Wangcheng District and Changsha County of Changsha City were hot spots for construction land growth, while Lukou District of Zhuzhou City and Xiangtan County of Xiangtan City were extremely cold spots for construction land growth. (3) The dominant time driving factors for the expansion of construction land are local fiscal expenditure, fixed asset investment, highway passenger traffic, total population, number of employees, and number of patent authorizations. In a comprehensive view, socio-economic investment, population growth and technological progress are important driving forces for the expansion of construction land. Population and GDP are the dominant spatial driving factors for the expansion of built space. © 2023 World Regional Studies. All rights reserved. |
