【摘要】 从物种多样性指数、均匀度和优势度角度分析不同人为干扰强度(ck原始甜槠林、A级择伐更新、B级天然更新、C级杉木林和D级毛竹林)对福建龙栖山甜槠林各层次恢复的影响。结果表明:随着人为干扰强度的加大,除灌木层均匀度略呈"S"型下降、草本层多样性指数和均匀度呈"S"型下降至C级后上升外,其他层次物种多样性指数和均匀度都为上升至A级后下降,而优势度除草本层上升至A级后下降,层外植物上升至C级后下降外,其他层次都呈线性上升。表5参13更多还原

【Abstract】 The effect of different intensity of artificial disturbance(ck,the original forest;class A,the regeneration of selection cutting;class B,the natural regeneration;class C,Chinese fir;class D,Phyllostachys heterocycla cv.pubescens)on the restoration of different layers of Castanopsis eyrei forest in Mount Longxi,Fujian,was discussed with diversity indices of species(DI),evenness degree(ED) and dominant degree(DD).The results show that with the increasing of intensity of disturbance,DI and ED of all species go up to class A then go down,excluded that ED of shrubs layer present Slike descant and DI and ED of herb layer in "S" patterns come down to class C then ascend.Excepting that Dd of herb layer rise to class A then descend and DD of vive layer go up to class C then go down,DD of other layers shows linear increase.更多还原