Dynamic Evolution,Regional Differences and Spatial Convergence of China's Agricultural Carbon Compensation Rates
Exploring the distribution dynamics,regional differences and convergence charac-teristics of agricultural carbon compensation rate can provide quantitative support for the formula-tion of agricultural carbon emission reduction and carbon sequestration policies across the country and in sub-regions.By incorporating both agricultural carbon emissions and carbon sinks into the agricultural carbon compensation rate accounting system,the agricultural carbon compensation rates of 30 provinces(municipalities and autonomous regions)in China from 2006 to 2021 are measured,and their dynamic evolution,regional differences and spatial convergence characteristics are analyzed using the kernel density estimation method,Dagum Gini coefficient and spatial econo-metric model.The results show that:(1)China's agricultural carbon compensation rate shows the characteristics of"absolute level rises and dispersion degree expands",and the main grain sales areas show the opposite characteristics of"absolute level declines and dispersion degree narrows".(2)Inter-regional differences are the main source of the overall differences in agricul-tural carbon compensation rates.Among them,the inter-regional differences between the main grain-producing areas and the production and sales balance areas are small.(3)There is no σconvergence in the national and three regional agricultural carbon compensation rates,but there is absolute and conditional β convergence.There is a positive spatial spillover effect in the growth of agricultural carbon compensation rates nationwide and in major grain-producing regions.On the contrary,the siphon effect and the"core-periphery"pattern in the regions with balanced produc-tion and sales are significant.There is also significant heterogeneity in the impact of agricultural technological progress,mechanical power per labor,agricultural industrial structure,and agricultural development level on the agricultural carbon compensation rates in different regions.It is suggested to speed up the transformation of agricultural energy structure,improve soil carbon se-questration capacity,strengthen the balance within the region,and promote the coordinated devel-opment of agricultural emission reduction and sink increase among regions.