【摘要】 <正>1引言 森林衰亡是全球关注的林业问题,尤其在欧洲地区,大片森林死去,造成了巨大的经济损失,恶化了更多还原

【Abstract】 By investigating dead trees in 4 ha permanent plots of Korean pine-deciduous mixed forest of Changbai Mountain, the tree mortality of Korean pine-deciduous mixed forest is low. It ranges from 0.3 tree·ha^-1·yr^-1 or 0.46 t·ha^-1·yr^-1 to 2.1 tree·ha^-1·yr^-1 or 1.23 t·ha^-1yr^-1. Wind is one of the major causes of tree death. The influence of disturbances （windfall, fire, insects, diseases, human activities, ect.） on Korean pine-deciduous mixed forest during past survey period is iimited. This forest ecosystem is in steady state.更多还原