ANNUAL CONGRESS 2025

Potential analysis of the coupling between urban development and surface temperature in Guanzhong area

Not scheduled

20m

Yildiz Technical University, Istanbul

Poster Track 05 | ENVIRONMENT AND CLIMATE

Speaker

Ms fei li (西安建筑科技大学)

Description

Changes in the urban physical environment under the development of urban agglomerations affect the evolution of spatial patterns of regional heat islands. Using time-series DMSP/OLS and NPP/VIIRS nighttime lighting data and MODIS surface temperature data, the overall coupled posture model, coupled coordination model, spatial autocorrelation model and landscape index were used to investigate the coupled interaction mechanism and spatial relationship between urban development and surface temperature in the Guanzhong Plain. The coupled interaction mechanism and spatial relationship between urban development and surface temperature were investigated. The high values of nighttime lighting index in Guanzhong Plain show the characteristics of centrality, expansion and connectivity, and the regional heat island connection is strengthening, and the development trend of urban-rural integration is highlighted. During the study period, the centers of gravity of nighttime lighting and surface temperature in Guanzhong Plain are shifted, and the distance between the centers of gravity is shortened from 45.0 km to 9.1 km, and the overall coupling between nighttime lighting and surface temperature is strengthened. The nighttime light-surface temperature coordination level in Guanzhong is dominated by the overshooting type, with the range spreading from the central and western parts of the region to the east, which indicates that this period is in the stage of rapid urbanization. The Moran's index of nighttime lighting and surface temperature in Guanzhong increased from 0.289 to 0.335 during the study period, showing a significant positive correlation between the two. The “high-high” and “low-low” clusters of nighttime lighting and surface temperature in the Guanzhong Plain are characterized by the development of spreading connectivity. The results provide theoretical references for the urban health and scientific development of Guanzhong Plain urban agglomeration.

References

[1] Ma J J, Guo J Y, Ahmad S, et al. Constructing a new inter-calibration method for DMSP-OLS and NPPVIIRS nighttime light［J］. Remote Sensing, 2020, 12(6): 937. DOI.org/10.3390/rs12060937.
[2] Elvidge C D, Baugh K E, Dietz J B, et al. Radiance calibration of DMSP-OLS low-light imaging data of human settlements［J］. Remote Sensing of Environment, 1999,68(1): 77-88.
[3] Sutton P. Modeling population density with night-time satellite imagery and GIS［J］. Computers, Environment and Urban Systems, 1997, 21(3/4): 227-244.
[4] Sutton P, Roberts D, Elvidge C, et al. Census from heaven: An estimate of the global human population using night-time satellite imagery［J］. International Journal of Remote Sensing, 2001, 22(16): 3061-3076.
[5] Imhoff M L, Lawrence W T, Elvidge C D, et al. Using nighttime DMSP/OLS images of city lights to estimate the impact of urban land use on soil resources in the United States ［J］. Remote Sensing of Environment, 1997, 59(1): 105-117.