Shuitu baochi tongbao (Jun 2023)
Spatial Correlation Characteristics of Amount and Intensity of Carbon Emissions Resulting from Cultivated Land Utilization in an Urban Agglomeration in Middle Reaches of Yangtze River
Abstract
[Objective] The spatial correlation characteristics of the amount and intensity of carbon emissions resulting from cultivated land utilization in an urban agglomeration in the middle reaches of the Yangtze River were analyzed in order to provide theoretical and practical guidance for achieving regional high-quality development. [Methods] The IPCC coefficient method, the overall coupling analysis model, and the bivariate spatial autocorrelation method were used in this study. [Results] ① The amount of carbon emissions resulting from cultivated land utilization in the study area showed a significant upward trend during 2010—2013, with an average annual growth rate of 2.0%. Carbon emissions showed a downward trend during 2014—2020, with an average annual decline of -2.6%. During the study period, the difference between the carbon emissions of each city tended to expand. ② The intensity of carbon emissions resulting from cultivated land utilization in the study area showed a fluctuating downward trend, with an average annual decline of -4.9%. However, due to the marginal decline effect, it was increasingly difficult to further improve the carbon emission intensity. ③ During the study period, the center-weighted distance between the amount and intensity of carbon emissions resulting from cultivated land utilization in the study area decreased from 0.571 km to 0.312 km. The included angle between their moving directions also showed a general declining trend, and the coupling situation continued to strengthen. ④ From 2010 to 2020, there was a significant spatial positive correlation between the amount and intensity of carbon emissions resulting from cultivated land utilization in the study area, and there was also spatial heterogeneity in this effect. The agglomeration situation was mainly manifested in the “high-high” and “low-low” area, which was represented by the Wuhan urban agglomeration and the Changsha-Zhuzhou-Xiangtan urban agglomeration, respectively. [Conclusion] Different regulation measures should be taken according to the spatial correlation pattern between the amount and intensity of carbon emissions resulting from cultivated land utilization. The “dual control” mechanism for the amount and intensity of carbon emissions resulting from cultivated land utilization is also an important consideration.
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