Abstract: This paper was based on nighttime light data to estimate carbon emissions from land use in the Chaohu Lake Basin. It analyzed the spatio-temporal distribution characteristics and spatial correlations of land use carbon emissions at the county level, investigating the mechanisms of influencing factors. The results indicated that from 2012 to 2018, land use features in Chaohu Lake Basin were significant, primarily dominated by cultivated land, followed by construction land and forest land, with limited water bodies, grassland, and unused land. During the same period, carbon sources in Chaohu Lake Basin were mainly concentrated in the urban area of Hefei City, Feidong County, and Feixi County, while carbon sinks were mainly concentrated in Shucheng County, Chaohu City, and Lujiang County. Overall, net carbon emissions from land use showed an increasing trend, and there was a significant positive spatial correlation. Regional investments, economic development, population size, and land use structure had a substantial impact on land use carbon emissions in Chaohu Lake Basin, with the interactive effects of paired factors exceeding those of individual indicators. The research findings can provide references for formulating rational regional carbon emission optimization strategies.
Keywords: land use carbon emissions; nighttime light remote sensing; spatio-temporal changes; influencing factors; Chaohu Lake Basin
合肥工业大学学报自科版