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Table 1 Regional crop-specific direct N2O emission factors for synthetic N fertilizer in Chinese uplands

From: Greenhouse gas emissions from synthetic nitrogen manufacture and fertilization for main upland crops in China

Agricultural regionProvinceDirect N2O emission factor (kg N2O–N kg N−1)
WheatMaize
NECLiaoning, Jilin, Heilongjiang0.0051
NCHebei, Shanxi, Shandong, Henan, Inner Mongolia0.00280.0070
MLYRJiangsu, Anhui, Hubei0.00860.0067
NWCShannxi, Gansu, Xinjiang0.00320.0057
SSWCChongqing, Sichuan, Guizhou, Yunnan, Guangxi0.00500.0047
  1. Data are from a study by Yue et al. [21]
  2. NEC Northeast China, NC North China, MLYR Middle and lower reaches of Yangtze River, NWC Northwest China, SSWC South and Southwest China