Journal of Geo-information Science ›› 2018, Vol. 20 ›› Issue (11): 1592-1603.doi: 10.12082/dqxxkx.2018.180242

Special Issue: 粤港澳大湾区

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The Coupling Between Construction Land Expansion and Urban Heat Island Expansion in Guangdong-Hong Kong-Macao Greater Bay

YANG Zhiwei1,2(), CHEN Yingbiao1,2,*(), WU Zhifeng1,2, ZHENG Zihao1,2   

  1. 1. School of Geographical Sciences, Guangzhou University, Guangzhou 510006, China
    2. Guangdong provincial geographical condition monitoring and comprehensive analysis engineering technology research center, Guangzhou 510006, China
  • Received:2018-05-15 Revised:2018-09-11 Online:2018-11-20 Published:2018-11-20
  • Contact: CHEN Yingbiao;
  • Supported by:
    National Natural Science Foundation of China, No.41771127;Guangdong Provincial Frontier and Key Technology Innovation Special Funds (Major Science and Technology Projects), No.2017B010117004;Natural Science Foundation of Guangdong, No.2016A030313551.


To study the coupling between construction land expansion and urban heat island(UHI)expansion in Guangdong-Hong Kong-Macao Greater Bay, it is of great significance and scientific value to improve the ecological environment of the Greater Bay and realize the healthy development of urbanization. In this paper, the Guangdong-Hong Kong-Macao Greater Bay was used as the research area. We selected remote sensing image data and surface temperature data in 2000, 2008 and 2016 to extract construction land in the Greater Bay, classify heat island intensity level and identify UHI regions. Then this paper used overall coupling model and spatial coupling model to reveal the coupling relationship between the construction land expansion and UHI expansion of the Greater Bay in different periods. The overall coupling situation was reflected by measuring the spatial overlap and change track consistency of land expansion and UHI expansion. And the spatial coupling relationship between the land expansion and UHI expansion was studied by using the revised coordination coefficient model. The results showed that: (1) From 2000 to 2016, the trend of construction land expansion and UHI expansion in the Greater Bay was synchronous. And the expansion rate between 2008 and 2016 was faster than that from 2000 to 2008; (2) The area of UHI increased constantly, and multiple UHI centers appeared. On the two sides of the Pearl River Estuary, an inverted "U" shaped UHI belt has been formed, which linked Zhongshan, Foshan, Guangzhou, Dongguan, Shenzhen and Hongkong; (3) The overall coupling situation of the construction land expansion and UHI in the Greater Bay was constantly strengthening. By 2016, the distance between the gravity center of the two types of indexes reached the nearest distance in the study period, and the overall coupling situation was also the greatest at this time. (4) During the research period, there was no serious imbalance of construction land expansion and UHI expansion in the Greater Bay. In the two types of index coupling types in the Greater Bay area, the space coupling categories of construction land expansion and UHI expansion were mainly coupling category, approximate coupling category and slightly uncoupling category. The degree of space coupling was high. And there was little change in the number of each category, but the number of "double high" coupled units was greatly increased.

Key words: construction land, urban heat island, expansion, coupling, Guangdong-Hong Kong-Macao Greater Bay