China's Grain System Resilience:Level Measurement and Dynamic Evolution
Based on the analysis of the theoretical connotation of grain system resilience,this article builds a comprehensive evaluation index system from three dimensions of risk resistance,adaptive adjust-ment capacity and innovation and transformation ability,measures and evaluates China's grain system re-silience from 2011 to 2021 with entropy method,Moran's I index,Kernel kernel density,spatial Markov chain,Dagum Gini coefficient,etc.The study finds that:(1)China's grain system resilience has im-proved significantly,but the overall level is low;Its level in the main grain marketing areas is higher;the index value of sub-dimension ranks,in descending order,are the risk resistance,innovation and transfor-mation ability,and adaptive adjustment capacity.(2)China's grain system resilience has a significant positive spatial correlation,most provinces are located in high-high agglomeration area and low-low ag-glomeration area,and the degree of spatial agglomeration gradually decreases.(3)The level of China's grain system resilience rises in fluctuation with a certain gradient effect,but the polarization effect is weak;the increase in the spatial lag level of adjacent regions can increase the probability of upward transfer in this region.(4)The regional differences are obvious but there is a certain trend of conver-gence,and the inter-group differences and hypervariable density are the main reasons for the unbalanced and insufficient development of the toughness of the grain system.
grain safetygrain system resiliencecapacity of innovationregional differences
NETL
NSTL
万方数据
维普
