Table 2 Main data used for developing this new N fertilization dataset.
From: Global crop-specific nitrogen fertilization dataset in 1961–2020
Data name | Year | Spatial resolution | Reference |
|---|---|---|---|
Harvested area for 175 crops | average of 1997–2003 | 5 min by 5 min | EARTHSTAT28 |
Harvested area for 175 crops | 1961–2020 | Country level | FAOSTAT20 |
Gridded cropland area | 1960–2017 | 5 min by 5 min | HYDE3.231 |
Nitrogen application rate for 21 crop groups | 2000 | 5 min by 5 min | Zhan et al.29 |
Nitrogen application to cropland | 1961–2014 | 5 min by 5 min | Wang et al.24 |
Nitrogen application amount | 2014–2020 | Country level | FAOSTAT20 |
Crop-specific nitrogen application amount | 2006, 2007, 2010, 2014, 2018 | Country or region | FUBC33 |
Fertilizer inputs for different fertilizer types | 1961, 1973–2020 | Country or region | IFASTAT21 |
National GDP | 1961–2020 | Country level | Word Bank37 |
Population | 1961–2020 | Country level | FAOSTAT20 |
Cropland area | 1961–2020 | Country level | FAOSTAT20 |
No-tillage area of China | 1980–2017 | Province level | CAMI43 |
No-tillage area by USA | 1989–2008 | State level | CTIC44 |
No-tillage area for 75 countries | 1989–2018 | Country level | |
Harvested area of irrigated crops and rainfed crops | 2005,2010 | 5 min by 5 min | |
Field size | 2015 | 1 km by 1 km | Lesiv et al.47 |
Income level | 1987–2018 | Country level | Word Bank37 |
Water erosion | 2001,2013 | 5 min by 5 min | Borrelli et al.48 |
Potential evapotranspiration and precipitation | 1961–2020 | 0.5° by 0.5° | CRU30 |
