Table 1 Value, coefficient of variation (CV) or range of distribution of parameters.
From: China’s greenhouse gas emissions for cropping systems from 1978–2016
Agricultural activity | Parameter | Value | CV or (a, b) |
---|---|---|---|
Crop residue open burning | \({f}_{s}^{str}\) | Table S1 | Table S1 |
\({f}_{i}^{open}\) | Table S2 | Table S2 | |
f burn | 0.9 | 0% | |
EFCROP for CH4 | 3.23 g CH4/kg | 17% | |
EFCROP for N2O | 0.008 g N2O/kg | 23% | |
Rice cultivation | \({f}_{i,r}^{length}\), \(E{F}_{i,r}^{RICE}\) | Table S3 | Table S3 |
Cropland change | \(E{F}_{j,l}^{LAND}\) | Table S4 | Table S4 |
Cropland emission | f enn | 0.2 | 0% |
\({f}_{a}^{excr}\), \({f}_{a}^{mana}\), \({f}_{a}^{liq}\), \({f}_{a}^{sol}\) | Table S5 | Table S5 | |
\({f}_{s}^{retu}\) | 0.14 | 11% | |
\({f}_{s}^{dry}\), \({f}_{s}^{rb}\), \({f}_{s}^{harv}\), \({f}_{s}^{rbrate}\) | Table S6 | Table S6 | |
\(E{F}_{i}^{CRLA,d}\) | Table S7 | Table S7 | |
f Fvolat | 0.1 kg NH3-N and NOX-N/kg N applied | (0.03, 0.3) | |
f Ovolat | 0.2 kg NH3-N and NOX-N/kg N applied | (0.05, 0.5) | |
EFCRLA,atm | 0.01 kg N2O-N/kg NH3-N and NOx-N volatilzed | (0.002, 0.05) | |
f leach | 0.3 kg N/kg N additions or deposition by grazing animals | (0.1, 0.8) | |
EFCRLA,leach | 0.0075 kg N2O-N/kg N leaching or runoff | (0.0005, 0.025) | |
Machinery use | \({f}_{e}^{LCV}\), \({f}_{e}^{carb}\), \({f}_{e}^{oxid}\) | Table S8 | Table S8 |
\(E{F}_{j,e}^{ENER}\) | Table S9 | Table S9 | |
Nitrogen fertilizer production | EFFERT for CO2 | 6.08 kg CO2/kg N | 50% |
EFFERT for CH4 | 0.02 kg CH4/kg N | 50% | |
EFFERT for N2O | 0.0009 kg N2O /kg N | 50% | |
Pesticide production | \({f}_{j}^{plPest}\) | Table S10 | 50% |
EFPEST | 16.35 kg CO2-equivalent/kg application | 50% |