Logistic regression models including the model parameters of the northern and the western sides.

<p>Classification accuracy was shown with the numbers of pixels that were observed and predicted in the two classes of tree and non-tree.</p><p>The variables that have considerable effects on the models are marked in bold. Significance of all variables: <i>P</i> < 0.001.</p><p>PRR represents potential relative radiation which sums daily values over the growing season.</p><p>SPI represents snow potential index which indicates the snow accumulation in topography. LST represents land surface temperature.</p><p>Logistic regression models including the model parameters of the northern and the western sides.