The trunk runoff is decrease gradually with tree diameter breast height increased, the crowncover areas enlarged and the bark thickened.
树干茎流量随着林木胸径的增加、林冠覆盖面积的增大和树皮增厚而减小。
2
Objective: to observe ERA crowncover attachment of the long-term effects of teeth to determine ERA crowncover attachment abutment the scope of choice.
目的：临床观察era冠内覆盖附着体基牙的远期效果，确定ERA冠内覆盖附着体基牙选择的范围。
3
The species component, density and index of crowncover in the tree layer effect on distribution of illumination and under plants in the plant community.