Abstract
The development of urban low carbonization is an important foundation for achieving the goal of “dual carbon.” The differences in spatial differences based on scientific methods revealing the characteristics of urban carbon emissions and its efficiency are of great significance for shaping the green low-carbon land space pattern. This article uses urban standard models and scale adjustments to the urban index (SAMIs) identification in 2006–2017 308 Chinese urban carbon discharge standards and efficiency time and space evolution pattern and their characteristics. The results of the study show that there is a stable secondary relationship between carbon emissions and urban population scale, which means that the growth rate of urban carbon emissions is significantly lagging behind the growth of urban systems. The analysis of urban carbon emission efficiency based on SAMI values shows significant spatial heterogeneity: the carbon emission efficiency of cities in North China, East China, and Northeast China is lower than that of other regions. In terms of temporal changes, there was a phenomenon of SAMI high-value cities moving north and low-value cities moving south between 2006 and 2017, and △SAMIs showed a pattern of hot in the west and cold in the east. This study broadens the applicability of urban scaling law models in urban environmental research, providing a new perspective for evaluating urban carbon emission efficiency and China’s energy conservation and emission reduction work.
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The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Funding
This work was supported by the Major Program of National Social Science Foundation of China (No. 19ZD172), National Natural Science Foundation of China (42001334), Key Laboratory of Territorial Spatial Planning and Development-Protection of the Ministry of Natural Resources of PRC and CAUPD Beijing Planning & Design Consultants LTD (ID. TSPDP23/01), and Independent Innovation Fund for Young Teachers of Huazhong University of Science and Technology (ID. 2021WKYXQN031 and 2022WKFZZX025).
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This idea was given by Yingxue Rao and Qingsong He. Yi Zhong analyzed the data and wrote the complete paper. Qingsong He provided supervision and approved the final version.
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Rao, Y., Zhong, Y. & He, Q. Evaluation of carbon emission efficiency based on urban scaling law: take 308 cities in China as an example. Environ Sci Pollut Res 30, 105166–105180 (2023). https://doi.org/10.1007/s11356-023-29634-y
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DOI: https://doi.org/10.1007/s11356-023-29634-y