Deciduous broad-leaved trees showed great self-fertilization capacity owing to plenty of litter under than and its rapid decomposition rate.
落叶阔叶树种由于凋落物丰富、分解速率快，而具有显著的自肥能力；
2
Inbreeding depression is the decrease of offspring fitness after inbreeding and is one of the primary forces selecting against the evolution of self-fertilization.
近交衰退指近交个体的适合度相对下降的现象，它是近亲繁殖的主要障碍。
3
Therefore, it should be emphasized to enhance the self - fertilization capability of forest by adjusting the species composition and increasing the proportion of native broad - leaved species.