CollectHomepage AdvertisementContact usMessage

Arid Land Geography ›› 2024, Vol. 47 ›› Issue (6): 967-979.doi: 10.12118/j.issn.1000-6060.2023.266

• Biology and Environment • Previous Articles     Next Articles

Spatiotemporal correlation characteristics and driving forces of human activity intensity and surface temperature in the Guanzhong area

JI Wangdi1(), HUANG Xiaojun1,2,3(), BAO Wei1, MA Yaozhuang1   

  1. 1. College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, Shaanxi, China
    2. Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Xi’an 710127, Shaanxi, China
    3. Shaanxi Xi’an Urban Forest Ecosystem Research Station, Xi’an 710127, Shaanxi, China
  • Received:2023-06-07 Revised:2023-09-14 Online:2024-06-25 Published:2024-07-09
  • Contact: HUANG Xiaojun E-mail:jwangd2000@163.com;huangxj@nwu.edu.cn

Abstract:

The accelerating role of human activities in the rise of global temperature has become increasingly evident. The scientific measurement of human activity intensity and the exploration of its spatiotemporal correlation with surface temperature has become a hot topic in research. Taking the Guanzhong area as an example, we integrate five indicators(population density, regional gross domestic product, nighttime light intensity, proportion of construction land area, and electricity consumption) to analyze spatiotemporal variations in human activity intensity and surface temperature. Furthermore, we explore the correlation and driving forces between human activity intensity and surface temperature. The results show that: (1) From 2001 to 2020, the average surface high and low temperature areas in the Guanzhong area demonstrated overall increasing and decreasing trends, respectively, with the scope of the surface high temperature areas continuously expanding. (2) The human activity intensity in the Guanzhong area gradually increased from 2000 to 2020, especially in downtown districts and major residential areas of prefecture-level cities. High-intensity areas continued to expand, while low-intensity areas were mainly located in the Qinling Mountains. (3) From 2000 to 2020, the human activity intensity in the Guanzhong area showed a significant positive correlation and spatial agglomeration with surface temperature. The area of positive correlation areas shows an increasing trend, mainly transforming from insignificant and negative correlations to positive correlation areas, with high-high type agglomeration areas primarily distributed in the main urban areas of cities, while low-low type agglomeration areas are mainly found in the Qinling Mountains. (4) Nighttime light intensity, population density, and the proportion of construction land area were identified as the most significant indicators of human activity intensity influencing surface temperature. Moreover, the explanatory power is most substantial for the interaction between nighttime light intensity and the proportion of construction land area as well as the interaction between population density and the proportion of construction land area.

Key words: human activity intensity, surface temperature, temporal-spatial correlation, Guanzhong area