Effects of Density on the Growth of Quercus variabilis Plantations at the Southern Foot of Taihang Mountains
In this paper, 6 densities of 30-year-old Quercus variabilis plantations on Dagouhe State-owned Forest Farm in Jiyuan City, Henan Province were used as the study objects in order to determine the rational forestation density of the plantations at the southern foot of Taihang Mountains. A sample -plot survey was made on the growth indexes of the plantations with different densities. The results showed that there was a close correlation between the stand density and the mean tree height, mean DBH, mean canopy diameter and the single mean volume. The mean tree height, mean DBH, mean canopy diameter and the single mean volume decreased with the progressive increase of the stand density. The optimum stand density of the 30-year-old Quercus variabilis plantations at the southern foot of Taihang Mountains should be controlled at 1400/hm2, which would be conducive to their growth.
NETL
NSTL
万方数据
维普
