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<p>Due to imbalanced economic development and agricultural structure, agricultural goods and their embodied carbon emissions present significant disparities in different Chinese provinces. This study constructs a sectoral multi-regional input–output (MRIO) model to account for agricultural carbon dioxide equivalent (CO₂e) emissions from both production and consumption-based perspectives. This model integrates crop-specific emission factors for six major crops across 31 Chinese provinces. The results show that production-based emissions are mainly concentrated in Heilongjiang (47.7 Tg CO₂e), Henan (49.57 Tg CO₂e), and Hunan (44.39 Tg CO₂e), while consumption-based emissions are mainly concentrated in Guangdong (57.84 Tg CO₂e), Shanghai (34.12 Tg CO₂e), and Beijing (17.97 Tg CO₂e). From a crop type perspective, Henan, Jiangsu, Shandong, and Hebei contributed 64.76% of the total wheat production emission, while Heilongjiang alone accounted for approximately 33.6% of the total soybean production emission. Both Guangdong (12.06 Tg CO₂e) and Shanghai (12.71 Tg CO₂e) heavily relied on major crop producing regions, while Jiangsu had a limited value-added outflow, even though with a net carbon outflow of 9.98 Tg CO₂e. These findings provide valuable insights on preparing region-specific agricultural carbon mitigation strategies.</p>

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Measuring carbon footprints of major crops in China: spatial distribution features and carbon burdens from both production and consumption perspectives

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月17日

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  • Yifan Wu,
  • Meng Li,
  • Jingyu Liu,
  • Yong Geng

摘要

Due to imbalanced economic development and agricultural structure, agricultural goods and their embodied carbon emissions present significant disparities in different Chinese provinces. This study constructs a sectoral multi-regional input–output (MRIO) model to account for agricultural carbon dioxide equivalent (CO₂e) emissions from both production and consumption-based perspectives. This model integrates crop-specific emission factors for six major crops across 31 Chinese provinces. The results show that production-based emissions are mainly concentrated in Heilongjiang (47.7 Tg CO₂e), Henan (49.57 Tg CO₂e), and Hunan (44.39 Tg CO₂e), while consumption-based emissions are mainly concentrated in Guangdong (57.84 Tg CO₂e), Shanghai (34.12 Tg CO₂e), and Beijing (17.97 Tg CO₂e). From a crop type perspective, Henan, Jiangsu, Shandong, and Hebei contributed 64.76% of the total wheat production emission, while Heilongjiang alone accounted for approximately 33.6% of the total soybean production emission. Both Guangdong (12.06 Tg CO₂e) and Shanghai (12.71 Tg CO₂e) heavily relied on major crop producing regions, while Jiangsu had a limited value-added outflow, even though with a net carbon outflow of 9.98 Tg CO₂e. These findings provide valuable insights on preparing region-specific agricultural carbon mitigation strategies.