森林采伐后随着顺行演替的进行，乔木层郁闭度、平均树高和胸径逐渐增长，群落的物种丰富度和多样性指数逐渐降低。
The canopy , mean height and mean breast diameter of tree layer raised step by step , but the species richness and diversity of communities lowed progressively along with community succession ;
采伐演替