Ecological compensation standard of cultivated land in Jiangxi Province from the perspective of food supply service flow.

Mismatch between supply and demand of ecosystem services will affect regional equity and restrict regional sustainable development. The formulation of reasonable ecological compensation standards can effectively coordinate regional environmental protection and economic development. At present, the ecological compensation mechanism of cultivated land is rarely adressed, which is in the conceptual analysis stage and lacks quantitative evaluation. Based on the supply and demand pattern of food supply services in Jiangxi Province from 2000 to 2020, we identified the supply and demand areas of food supply services, introduced comparative ecological radiant force model to quantify the flow of food supply services, and quantitatively assessed the ecological compensation standard of cultivated land. The results showed that there was a mismatch between supply and demand of food supply services in Jiangxi. The regional supply and demand relationship changed from deficit to surplus but the difference decreased. The degree of coupling coordination was relatively low. The food supply service flow changed from rapid rise to slow rise, flowing from the central part of Jiangxi to the surrounding areas. The total amount of ecological compensation for cultivated land continues to rise, from 2.214 billion yuan in 2000 to 12.638 billion yuan in 2020. The payment direction of cultivated land ecological compensation in Jiangxi was mainly characterized by the compensation of cultivated land from economically developed districts and counties of prefecture-level cities to the surrounding areas with rich cultivated land resources. This study provided theoretical support for regional sustainable development and some reference for cultivated land ecological compensation.