The study looked at how young trees grow in secondary forests of a specific oak species in the Qinling Mountains. They found that this oak species is the most important in the forest, with other tree species not as significant. The forest has a lot of young trees growing, mainly from seeds. The young trees of some species are more common than others, and their numbers change with factors like how dense the forest is, which way the slope faces, and how high up they are on the mountain. Overall, the forest seems to be doing well in growing new trees.