Spatiotemporal correlation analysis between carbon emission intensity and intensive use level of construction land at county scale in Chongqing of China

The association between carbon emissions and construction intensive-use is still unknown. As a result, this research seeks to assess the carbon emission intensity and intensive use level of construction land in 38 districts (or counties) of Chongqing from 1997 to 2015 using data from construction land and economic and social development. Simultaneously, the spatial autocorrelation analysis approach is utilized to uncover the spatial correlation and spatial distribution characteristics between carbon emission intensity and intensive usage level of construction land in each district and county. The findings indicate that: (1) Because of the influence of complicated terrain types and differences in economic-social development, heavy carbon emissions and extremely intensive use are concentrated in the central parts of cities. The two main sites for micro carbon emissions and micro intensive use are the Three Gorges Reservoir Area in Northeast Chongqing and the Wuling Mountain Area in Southeast Chongqing. (2) The global spatial autocorrelation of carbon emissions and intensive use exhibits a trend of first increasing and then dropping, but it is a high value agglomeration overall. Local spatial autocorrelation reveals that the low-value agglomeration region is primarily found in Southeast and Northeast Chongqing, while the high-value area is primarily found in urban centre areas and urban development new areas. (3) In order to create a new land-use mode with the objective of "low-carbon and intensive use," various regions should make use of various mechanisms to encourage the movement of people, land, industry, and other elements between regions. Technology development, planning advice, mode selection, and policy design are some of these tools.