Predictive quality of three boosted regression tree (BRT) models for ln(SOC).

<p>Notes: MA, Topography + climate + Landsat TM; MB, Topography + climate; MC, Landsat TM; MAE, the mean absolute error; RMSE, the root mean squared error; R², the coefficient of determination; LCCC, Lin’s concordance correlation coefficient.</p><p>Predictive quality of three boosted regression tree (BRT) models for ln(SOC).