The impact of climate change on the efficiency of agricultural production in the world's main agricultural regions

Climate change has had a significant impact on global agricultural production. Hence, studying the impact of climate change on the efficiency of agricultural production has become crucial in helping major agricultural regions around the world adopt novel technologies to improve the adaptability of agricultural production. The efficiency of agricultural production can also be improved, and global food safety can be ensured at the same time. This paper used data collected from 43 countries around the world from 1992 to 2018. The data envelopment analysis-Malmquist model was used to estimate agricultural productivity with and without the presence of climate factors, and data comparison and analysis were performed among years and regions. The results show that climate factors can overestimate agricultural productivity. On the whole, climate factors have a positive impact on agricultural production in Sub-Saharan Africa and Latin America and a negative impact in other areas. In addition, the impact of climate change on technical progress is greater than the impact on technical efficiency. According to the results, this paper finds that relevant departments should pay attention to the development of agricultural technology under climate change and should carry out suitable management based on geographical location and climate conditions. In summary, the research methods and results of this article provide a reference for the progress of agricultural production under global climate change.