Abstract：Under the background of implementing the carbon peak and carbon neutralization strategy. Based on the survey and statistical data， this paper makes an empirical study on the production efficiency and greenhouse gas (GHG) emission reduction potential of China's corn by using the methods of Life Cycle Architecture and Data Envelopment Analysis (LCA＋DEA). The results are shown as follows： 1) In 2019， the average corn production efficiency of 20 main producing provinces (decision-making units) is 0.933 2， of which the scores of 11 low efficiency units are between 0.621 7～0.975 4， with an average value of 0.772 6. The sensitivity of production efficiency to pesticide input is the highest， followed by seeds， diesels and fertilizers are lower. 2) At present， the average amount of greenhouse gases emitted per hectare in inefficient provinces is 3 310.56 kg CO2-eq， of which the contribution rate of chemical fertilizers is the highest (75.10%)， followed by diesels (19.98%)， pesticides (3.59%) and seeds (1.32%) are lower. In the fertilizer emission structure， nitrogen fertilizer accounts for the highest proportion (54.84%)， followed by complex fertilizer (43.45%)， phosphate fertilizer (1.70%) and potassium fertilizer (0.02%) are lower.3) In order to achieve DEA effectiveness， the greenhouse gas per hm2 of low efficiency unit can be reduced by 30.69～2 345.02kg CO2-eq， with an average value of 844.64kg CO2-eq. Among them， the emission reduction potential of Shandong Province and Henan Province rank among the top two in China， and the emission reduction potential has a reverse relationship with production efficiency. This study provides some basis for improving corn production efficiency and exploring low-carbon guidance and control path.
宋文丽,王文芳,杨 振. 基于LCA＋DEA方法的玉米种植效率与温室气体减排潜力研究[J]. 华中师范大学学报(自然科学版), 2023, 57(2): 293-301.
SONG Wenli,WANG Wenfang,YANG Zhen. The efficiency and potential GHG reduction of corn planting based on LCA＋DEA method. journal1, 2023, 57(2): 293-301.
2023, Vol. 57 
