Influences of large-scale farming on carbon emissions from cropping: Evidence from China

种植 农业 碳纤维 温室气体 环境科学 肥料 发射强度 农学 数学 地理 生态学 化学 复合数 有机化学 考古 离子 生物 算法
作者
Ya-ling LI,Fujin Yi,Chong-jun YUAN
出处
期刊:Journal of Integrative Agriculture [Elsevier BV]
卷期号:22 (10): 3209-3219 被引量:4
标识
DOI:10.1016/j.jia.2023.08.006
摘要

Reducing agricultural carbon emissions is important to enable carbon emission peaking by 2030 in China. However, China's transformation towards large-scale farming brings uncertainties to carbon emission reduction. This study quantifies the carbon emissions from cropping based on life cycle assessment and estimates the effects of farm size on carbon emissions using a fixed effects model. Furthermore, the variations of the carbon emissions from cropping driven by the changes in farm size in future years are projected through scenario analysis. Results demonstrate an inverted U-shaped change in total carbon emission from cropping as farm size increases, which is dominated by the changes in the carbon emission from fertilizer. Projections illustrate that large-scale farming transformation will postpone the peak year of total carbon emission from cropping until 2048 if the change in farm size follows a historical trend, although it is conducive to reducing total carbon emission in the long run. The findings indicate that environmental regulations to reduce fertilizer usages should be strengthened for carbon emission abatement in the early stage of large-scale farming transformation, which are also informative to other developing countries with small farm size.

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