Fig. 11

Importance scores for predictor variables. a The importance scores difference of predictors in different models. Predictor variables importance scores are the same in the ANN and SVM model. Because NDVI had a very small importance score in the MLR and RF models, removing it from the two models will be taken into consideration and then re-modeled. CRR can also be removed from ANN and SVM for the similar reasons. b The importance scores of predictors are aggregated based on four model types and are displayed on the x axis