大叶栎萌芽林密度效应初步研究OA

In order to investigate effects of stump density and sprout number per stump on growth of Castanop-sis fissa sprouting forest,taking naturally regenerated C.fissa sprouting forest following clear-cutting in 2015 as research object,four stump density treatments(450,600,750 and 900 stumps/hm2)were established.Linear mixed model was used to control sprout number per stump and random plot effects,effects of stump density treatments on sprout DBH,tree height,individual volume and stand accumulation were analyzed.Results showed that stump density had no significant effects on sprout DBH,tree height,individual volume and stand accumulation.Sprout number per stump was significantly negatively correlated with DBH and individual vol-ume,but showed no significant correlation with tree height.600 stumps/hm2 treatment exhibited the highest pro-portion of sprouts with DBH≥10 cm,while also maintaining relatively higher stand accumulation,which demon-strated better yield stability.Under site conditions and stump density range of this study,stump density effect was weak and sprout number per stump was primary factor constraining individual growths.