基于生态系统服务流的长三角城市群碳补偿研究

Key Points

• This research aims to analyze carbon compensation mechanisms based on ecosystem service flow theory in the Yangtze River Delta.
• Conducted clustering analysis on socioeconomic and ecological data from 2000 to 2022.
• Identified carbon compensation areas and beneficiary areas within the Yangtze River Delta.
• Employed breakpoint and field strength models to reveal spatial transfer paths of carbon capture services.
• Calculated carbon compensation amounts based on carbon sink contributions from each city.
• Carbon emissions in the Yangtze River Delta showed a continuous increasing trend, while carbon absorption declined.
• Spatial distribution of carbon emissions and absorptions exhibited opposite patterns, with emissions higher in the east and north, and absorptions higher in the west and south.
• The primary flow direction of solid carbon service was from southwest to northeast, with Xuancheng as the largest output area and Nanjing as the largest input area, reaching a payment of 41.0365 million yuan in 2022.
• A significant mismatch in spatial carbon balance was found, highlighting the need for an inter-regional carbon compensation mechanism to meet carbon neutrality goals.