Fig. 8

Transferability evaluation of the pre-trained classifiers for plastic-mulched farmland (PMF) mapping. (a) F1 values of PMF mapping based on locally adaptive classifiers trained on data in 2020 within each city of the Loess Plateau (Scenario–Ref). (b) Percentage change in F1 values (F1change) for temporal transferability scenario (Scenario–T). (c) F1change for spatial–temporal transferability scenario (Scenario–ST).