 8-band worldview, 2-satellite data can accurately identify 10 tree species in a temperate forest with an overall accuracy of around 82%, and the object-based approach outperforms the pixel-based approach. The new worldview, 2-bands have limited impact on classification accuracy if only 4 main tree species are separated, but using full spectral resolution can significantly increase accuracy when more tree species are included. RF output provides two measures to evaluate the importance of spectral bands, and a literature review on tree species classification is presented. This article was authored by Tatjana Kukul, Marcus Immitzer, and Clement Atzberger.