misc. macrophanerophytes
Species diversity indices of shrub layer were higher than those in arbor layer and herb layer.
群落的物种多样性高,各项物种多样性指数的大小关系:灌木层>草本层>乔木层。
参考来源 - 广西千家洞自然保护区珍稀濒危植物福建柏群落的研究With the succession, the species diversity of the tree layer increased gradually.
随着青冈群落演替进行，乔木层物种多样性逐渐增大。
参考来源 - 古田山自然保护区森林植被研究·2,447,543篇论文数据，部分数据来源于NoteExpress
修剪像灌木和乔木这样的木本植物必须小心翼翼。
Care must be taken when trimming around woody plants like shrubs and trees.
四种常绿乔木的除尘能力等级排列为：云杉，针刺杜松，圆柏和柏油松。
The dusts-removing abilities of four types of evergreen trees are ranked as: spruce, needle juniper, Sabina chinensis, and pitch pine.
常绿的乔木，为照片提供了良好的背景。
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