Fertilizer management for global ammonia emission reduction

Fig. 2 Global cropland NH3 EFs and emissionsat a five-arcminute resolution in 2018 derived by machine learning. The global maps of the NH3 EFs for rice (a), wheat (b) and maize (c). Mapping of NH3 emissions per unit fertilized hectares of rice (d), wheat (e), and maize (f).  

Supplementary Table 3. The full data set and list of references for publications used in our machine learning model.