Carbon emission source

Carbon emission coefficient

Reference source

Chemical fertilizer

0.8956 kg/kg

West and Marland, (2002) , Oak Ridge National Laboratory

Chemical pesticide

4.9341 kg/kg

Oak Ridge National Laboratory (Zhi & Gao, 2009)

Plastic film for agriculture

5.18 kg/kg

Nanjing agricultural university institute of agricultural resources and ecology

Diesel oil

0.5927 kg/kg

Intergovernmental Panel on Climate and Climate (IPCC, 2007)

Ploughing

312.6 kg/km²

College of Biology and Technology, China Agricultural University (Wu et al., 2007)

Agricultural irrigation

266.48 kg/hm²

West and Marland, (2002)