大食物观下农食系统碳排放效率与粮食安全的互动关系OA

To investigate the relationship between the carbon emission efficiency of the agri-food system and food security,this study calculated the carbon emission efficiency of the agri-food system and the level of food security for 30 provincial-level administrative regions in China from 2015 to 2022(Data do not include those of Xizang,Hong Kong,Macao,and Taiwan regions.The same applies below).A simultaneous equations model was employed to examine the interactive relationship and the underlying mediating mechanism between the two.The results indicate that:1)The total carbon emissions of the agri-food system showed an increasing trend,yet the growth rate has slowed in recent years.There were significant disparities in carbon emission efficiency across regions,with improvements concentrated in eastern regions.2)The spatial pattern of food security levels showed lower in the southwest and higher in the northeast.During the study period,food security levels generally improved.3)A positive interactive relationship was observed between the carbon emission efficiency of the agri-food system and food security,moreover the climate change and industrial agglomeration effects played significant mediating roles.4)Compared to the western region,the positive interaction in the eastern and central regions is markably more significant;With the increase of financial support,the positive interaction effect significantly strengthened.In conclusion,this study recommends promoting the application of low-carbon technologies and transitioning the energy structure,building an integrated industrial chain and policy system driven by industrial agglomeration to advance the low-carbon transformation of the agri-food system,and implementing differentiated support to facilitate the low-carbon transition of the agri-food system in western regions.