Table 1 The CO2 emission intensity of different intercity transport modes in China
Passenger transport | Freight transport | |||||||
|---|---|---|---|---|---|---|---|---|
Road | Rail | Air | Water | Road | Rail | Air | Water | |
Energy consumption intensity (EC) (in unit of gce/pkm or tkm, except air which is in g jet kerosene/pkm or tkm) | ||||||||
2000 | 15.9 | 5.7 | 36.0 | 2.4 | 58.0 | 5.7 | 400.0 | 7.2 |
2005 | 18.5 | 4.4 | 30.2 | 1.8 | 72.0 | 4.4 | 336.0 | 5.5 |
2010 | 16.7 | 3.7 | 25.6 | 1.3 | 40.0 | 3.7 | 284.0 | 4.0 |
2015 | 12.6 | 3.0 | 26.5 | 1.1 | 19.0 | 3.0 | 294.0 | 3.2 |
2019 | 13.1 | 2.5 | 25.7 | 0.9 | 17 0 | 2.5 | 285.0 | 2.6 |
2020 | 13.0 | 2.7 | 28.4 | 0.8 | 16.9 | 2.7 | 316.0 | 2.5 |
2021 | 12.9 | 2.5 | 27.8 | 0.8 | 16.8 | 2.5 | 305.0 | 2.5 |
CO2 emission intensity (EI) (in unit of g/pkm or tkm) | ||||||||
2000 | 39.0 | 13.9 | 113.5 | 2.9 | 143.2 | 13.9 | 1261.3 | 17.7 |
2005 | 45.5 | 10.7 | 95.4 | 4.5 | 177.7 | 10.7 | 1198.2 | 13.4 |
2010 | 40.9 | 9.1 | 80.6 | 3.2 | 97.3 | 9.1 | 1135.1 | 9.7 |
2015 | 31.0 | 7.5 | 83.4 | 2.6 | 46.7 | 7.5 | 1116.2 | 7.8 |
2019 | 32.2 | 6.0 | 80.9 | 2.1 | 41.8 | 6.0 | 898.6 | 6.3 |
2020 | 31.9 | 6.6 | 89.7 | 2.1 | 41.5 | 6.6 | 996.4 | 6.2 |
2021 | 31.7 | 6.1 | 87.7 | 2.0 | 41.2 | 6.1 | 974.3 | 6.0 |