Research on Evaluation of Food Security in Southwest China
Food security is crucial to national welfare and people's livelihood,and is an important founda-tion of national security.Based on panel data of Southwest China and 42 municipal units from 2001 to 2020,a food security evaluation index system was constructed from four dimensions of food supply capaci-ty,availability,stability,and sustainability to assess the food security status in Southwest China.The re-sults showed that:① The overall level of food security in Southwest China has shown an upward trend,experiencing two stages of fluctuating decline and steady increase.② Among the four subsystems,the lev-el of food availability has increased at the fastest rate and with the largest magnitude,making the main contribution to the rise of food security in Southwest China,followed by stability,supply capacity,and sustainability.Each subsystem had different characteristics of evolution in different periods.③ There were significant differences in food security among different municipalities,and the cities with higher com-prehensive levels of food security and faster growth were mainly distributed in the Sichuan Basin.Between 2001 and 2020,the types of food security in various cities in Southwest China shifted from low and ex-tremely low food security to intermediate or higher food security,with types of high and extremely high food security were mainly concentrated in the Sichuan Basin,while intermediate food security types were mainly distributed around the high food security types.In the future,safeguarding food security in the Southwest China should focus on increasing farmland protection,improving farmland quality,strengthe-ning agricultural infrastructure construction,improving residents'income,increasing food supply sources,reducing the use of chemical fertilizer and promoting the renewal of agricultural technology.
NETL
NSTL
万方数据
