The coupling relationship between construction land expansion and high-temperature area expansion in China's three major urban agglomerations

• Published in: International journal of remote sensing Vol. 40; no. 17; pp. 6680 - 6699
• Main Authors: Yang, Zhiwei, Chen, Yingbiao, Qian, Qinglan, Wu, Zhifeng, Zheng, Zihao, Huang, Qingyao
• Format: Journal Article
• Language: English
• Published: London Taylor & Francis 02-09-2019; Taylor & Francis Ltd
• Subjects: Agglomeration; Construction; Coupling; Expansion; High temperature; Land surface temperature; Surface temperature; Urban areas; Urban heat islands; Urbanization; Variation; China
• ISSN: 0143-1161; 1366-5901
• DOI: 10.1080/01431161.2019.1590877

With the development of urbanization in China, construction land (CL) expansion is obvious, and urban heat island (UHI) is becoming more and more serious. Many scholars have shown a strong interest in the study of UHI caused by land expansion, but less attention has been paid to the coupling relationship between CL expansion and high-temperature area (HTA) expansion during the process of urbanization. This study obtained the land surface temperature (LST) data of China's three major urban agglomerations (CTM-UAs) in 2000, 2005, 2010 and 2015. Then this paper used overall coupling model and spatial coupling model to reveal the coupling relationship between the CL expansion and HTA expansion of CTM-UAs in different periods. The results showed that: (1) From 2000 to 2015, the trend of CL expansion and HTA expansion in CTM-UAs was synchronous; (2) The distance between the CL barycentre and HTA barycentre in CTM-UAs was shrinking, the spatial overlap was constantly strengthening, and the overall coupling was constantly strengthening. And the highest value of the overall coupling was reached in 2015; (3) The number of grid units of very strong coupling and strong coupling increased with fluctuation in Beijing-Tianjin-Tangshan Urban Agglomeration (BTT), that in Yangtze River Delta Urban Agglomeration (YRD) was increasing, and that of Guangdong-Hong Kong-Macao Urban Agglomeration (GHM) has gone through the process of increasing to decrease.