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| Estimation of greenhouse gas emissions from production, transportation and fertilization of synthetic nitrogen for wheat and maize in typical provinces of China |
| Received:May 11, 2018 |
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| KeyWord:wheat;maize;synthetic N fertilizers;N2O;greenhouse gas emissions |
| Author Name | Affiliation | E-mail | | CHAI Ru-shan | Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China | | | WANG Qing-yun | Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agricultural Resources and Reginal Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | | YE Xin-xin | Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China | | | MA Chao | Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China | | | TU Ren-feng | Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China | | | GAO Hong-jian | Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China | hjgao@ahau.edu.cn |
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| Abstract: |
| In this research, the amount of greenhouse gas emissions induced by consumption of synthetic N for wheat and maize in typical provinces (Henan, Hebei, and Shandong) of China was assessed based on the analysis of statistical data using a data mining method, and included direct N2O emissions from soil, indirect N2O emissions through volatilization of NH3 and N leaching and runoff, and greenhouse gas emissions from production and transportation of different kinds of synthetic N fertilizers. In wheat production, the total greenhouse gas emissions from synthetic N fertilization were 15.36 million, 8.47 million, and 11.53 million tons CO2 equivalent per year for Henan, Hebei, and Shandong Provinces, respectively, or 2.85, 3.61, and 3.09 tons CO2 equivalent per hectare, or 0.46, 0.60, and 0.51 tons CO2 equivalent per ton of wheat, respectively. In maize production, the total greenhouse gas emissions from synthetic N fertilization were 7.17 million, 7.20 million, and 9.12 million tons CO2 equivalent per year for Henan, Hebei, and Shandong Provinces, respectively, or 2.19, 2.27, and 2.92 tons CO2 equivalent per hectare, or 0.40, 0.43, and 0.46 tons CO2 equivalent per ton of maize, respectively. Direct N2O emissions from soil and greenhouse gas emissions from the production of synthetic N fertilizers were the main sources of greenhouse gas emissions from synthetic N fertilization. |
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