The reasons of gap formation were discussed. The component of regeneration of Fagus engleriana had a positive correlation with the size of gap.
探讨了林窗的形成原因，米心水青冈的更新成分与林窗的大小呈正相关性。
2
The loss rate of dry weight of Pterocarya insignis and Cercidiphyllum japonicum was 77% and 71%, and shat of Fagus engleriana and Cyclobalanopsis multinervis was 43% and 42%.