Economic activity patterns and land use patterns greatly affect the carbon emission patterns of a certain region. This article is based on 30 meter precision land use data and energy consumption data of the Changzhutan urban agglomeration, using a grid with a side length of 5 kilometers as the research unit. We inferred the spatiotemporal pattern and changes in carbon emissions in the region from 2000 to 2020. We also explored the evolution process of carbon emission grids, carbon source grids, and carbon sink grids at different intensity levels in the region over the past 20 years. This article uses Geoda software to conduct a comprehensive and local Moran's analysis of regional carbon emissions, to explore the spatial autocorrelation between grids. Research has shown that: the total carbon emissions of the Chang-Zhu-Tan urban agglomeration have gone through three stages: first rapid growth, then slow growth, and finally rapid decline. The carbon emissions in 2010 and 2015 were much higher than those in 2000, 2005, and 2020.In 2010 and 2015, a large number of extremely high intensity grids with annual carbon emissions exceeding 500000 tons appeared in the three urban areas of Changsha, Zhuzhou, and Xiangtan. Subsequently, by 2020, the total carbon emissions had fallen back to close to 2005; The central urban area of the three cities of Changsha, Zhuzhou, and Xiangtan is the region with the largest changes in carbon emission patterns within the study area. It is also a high-value core area for carbon emissions and carbon sources. The high carbon emission grid has become increasingly concentrated in the area. The area along National Highway 106 in Zhuzhou is another area with high carbon emissions and carbon source values. The connection between this area and the core area of the Chang-Zhu-Tan metropolitan area is relatively weak due to the influence of terrain and distance. The mountainous and hilly areas are the main functional carriers of carbon sequestration in the entire research area. Several large mountain ranges within the territory are gathering areas for high-value carbon sequestration grids. The carbon emission grid exhibits low to low aggregation in this area. Regarding the task of achieving dual carbon, this article believes that: We must take into account the transformation of economic models within the built-up area, the rational planning and control of regional land use types, and the protection of existing ecological green spaces, and these three directions must be jointly promoted and implemented.

Gao Ziheng, He Dong, Jing Jie, Chen Yu, Chen Huiling. Analysis of spatio-temporal pattern of land-use carbon emission in Chang-Zhu-Tan metropolitan area at the grid scale. Academic Journal of Environment & Earth Science (2023) Vol. 5 Issue 8: 80-91. https://doi.org/10.25236/AJEE.2023.050809.

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