关键词: 粮食体系韧性, 粮食安全, 压力—状态—响应模型, 障碍度模型, 粮食主产区

Abstract: Building a resilient agricultural food system is of great significance to comprehensively improve the  food security level in China. The index system of grain system resilience is constructed based on the “pressurestateresponse” model. The entropy weight method is used to comprehensively evaluate the grain system resilience of the main grain producing regions, and the barrier factors are diagnosed with the barrier degree model. The results show that from 2010 to 2020, the resilience level of the grain system of the provinces in the main grain producing regions presents  an upward trend, in which the average pressure value of the provinces gradually  decreases, the average state value first  increases and then  decreases, and the average response value gradually  increases. The pressure criterion layer has the highest barrier, and the pressure will also become the main factor affecting the resilience improvement of the main grain producing areas. The direct economic loss caused by natural disasters, fertilizer application amount per unit sown area, number of agricultural technicians of public economic enterprises and institutions, and per capita cultivated land area are the main obstacles to improve the resilience of the grain system in the main grain producing areas. Therefore, in order to improve the resilience of the food system, we should the emergency mechanism, coordination mechanism and longterm mechanism of the food system in the main food producing areas should be constantly established and improved.

Key words: resilience of food system, food security, pressurestateresponse model, obstacle model, main grain producing areas