Table 2 Comparison of the scope of environmental impacts between Yunnan Province and other regions.
Unit | Rice | Wheat | Maize | ||||
|---|---|---|---|---|---|---|---|
Yunnan Province | Northeast China | Yunnan Province | Europe | Yunnan Province | America | ||
Greenhouse gas emissions | kg CO2-eq Mg−1 | 796–1019 | 987–1486 | 684–1134 | 610–650 | 683–942 | 254–824 |
Acidification potential | kg SO2-eq Mg−1 | 8.2–11.8 | – | 15.0–22.4 | 4.9–6.5 | 15.0–22.4 | 2.7–7.8 |
Eutrophication potential | kg PO4-eq Mg−1 | 1.4–2.1 | – | 2.6–3.9 | 5.0–7.6 | 2.6–3.9 | 0.7–2.3 |
