Evaluation of grain system resilience and analysis of obstacle factors in main grain producing regions in China
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.
resilience of food systemfood securitypressure-state-response modelobstacle modelmain grain producing areas
万方数据
维普
