[Spatiotemporal Differentiation of Carbon Budget and Carbon Compensation Zoning in the Yangtze River Delta Urban...

The Yangtze River Delta urban agglomeration is one of the most economically developed regions in China and a hotspot for carbon emissions. Analyzing the spatiotemporal changes in carbon emissions and the changes in carbon compensation zoning in the Yangtze River Delta urban agglomeration is of great significance to achieving the regional "dual carbon" goals. The land use carbon balance method was used in this study to calculate the land use carbon emissions and absorption of 26 cities in the Yangtze River Delta urban agglomeration from 2000 to 2021. The carbon compensation value of each city was calculated and zoned using the revised carbon compensation value calculation method, and its spatial evolution was analyzed through compensation priority. Finally, corresponding policy recommendations were given. The results showed that： ① From 2000 to 2021, the total net carbon emissions from land use in the Yangtze River Delta urban agglomeration increased by 274.88%, from -120.008 1 million tons to 209.875 million tons, with an average increase of 68.72% every five years. ② The key areas of carbon emissions were consistently in the northeastern cities of the Yangtze River Delta, and the key areas of carbon absorption were in the southwestern cities. ③ From 2000 to 2021, the carbon compensation rate of most cities in Zhejiang Province and Anhui Province was greater than 1, requiring that they obtain carbon compensation funds. Shanghai and some cities in Jiangsu Province also need to pay carbon compensation funds. The compensation areas were concentrated in the central part of the Yangtze River Delta, and the compensated areas were mainly distributed on both sides of the compensation areas. ④ From 2000 to 2021, the priority of the compensation area showed a trend of moving from central to the southeast, and the priority of the compensated area showed a trend of moving from the south to the northwest.