Transforming county into district is an important administrative division adjustment policy for promoting the construction of new urbanization in China.But since 2021,China has repeatedly stated that transforming county into district should be strictly controlled.With transforming county into district as a natural quasi experiment and based on the county-level economic and social data from 2000 to 2019,this study analyzes the impact and action mechanism of the policy of transforming county into district on food production and food security by using multi-phase DID,PSM-DID,CMP model and mediating effect model,and demonstrates the rationality of China strictly controlling transforming county into district from the perspective of food security.It is found that firstly,the policy of transforming county into district is not conducive to food production and food security,and this conclusion is still robust when the regression model and explanatory variables are changed and the sample size is adjusted,with this negative impact existing in the long term;secondly,the policy of transforming county into district has a negative impact on food security through the reconfiguration of agricultural production factors and the shift of"government attention";and finally,regional heterogeneity exists in this negative impact,and transforming county into district has a more significant negative impact on non-grain production core areas,leading to a further imbalance in food security responsibility.It is recommended to cautiously promote transforming county into district,balance the responsibility of different provinces for food security,and orderly promote the improvement of comprehensive grain production capacity in counties.
关键词
撤县设区/粮食安全/粮食生产/多期DID/中介效应模型
Key words
transforming county into district/food security/grain production/multi-phase DID/mediating effect model
维普
万方数据