Spatio-temporal evolution characteristics and driving factors of food security system transformation in China
In the context of the increasingly severe global food crisis caused by multiple external factors,building a more productive,nutritious,resilient,and sustainable food security system to promote the transformation of the agricultural and food system had become more crucial,particularly because it is essential for stabilizing China's overall economic and social development.This paper was based on the perspective of the Nature-Society-Economy complex system.It divided the food security system into three levels:resources and environment,production and supply,and distribution and consumption.This paper constructed an index system based on the three-dimensional framework of Pressure-State-Response,employing provincial panel data from 2000 to 2021 to analyze the spatial and temporal spatial evolution characteristics of China's food security system transformation.A dynamic panel model was adopted to quantify the various driving factors related to the food security system transformation.The research results indicated the following:(1)The comprehensive index of food security system transformation from 2000 to 2021 increased by 97.90％,showing a two-stage change characteristic with a moderate rise from 2000 to 2012 and a rapid growth from 2013 to 2021.The transformation index of the resources and environment and the production and supply subsystems were consistent with the evolution of the comprehensive index of food security system transformation,also exhibiting a two-stage upward trend.The transformation index of the distribution and consumption subsystem showed a downward and then an upward trend.(2)The comprehensive index of provincial food security system transformation increased continuously from 2000 to 2021.The provinces that exceeded China's average shifted from a balanced distribution across the eastern,central,and western regions in 2000 to clustering in the main grain-producing areas in 2021.(3)The food security system transformation is an ongoing endeavor.The rate of urbanization,agricultural financing policies,birth rate,and dietary diversity index can significantly promote the transformation of the food security system.The transformation of the food security system can be seriously hampered by industrialization,relative returns from agricultural production,GDP growth rate,and per capita disposable income.
food securitytransformationnature-society-economy complex ecosystemspatio-temporal evolutiondynamic panel model
万方数据
维普
