2 树种确定 根据确定的天然和潜在植被类型 , 确定造林选 用的种类 ,主要是建群种类( Canopy tree species) 和优 势种类( Dominant species) , 也包括灌木种类。 通常 种类至少 10～20 种。
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At the Kirstenbosch Arboretum visitors can explore and observe some of the world's most endangered plant species while walking along Mark Thomas Architects' serpentine Tree Canopy walk.
漫步在克斯坦布希植物园的蛇形树冠走道上(马克·托马斯设计)，游客们可以探索和观察到世界濒危的植物物种。
Tree Canopy Walk - the natural environment of Cape Town is abundant with biodiversity, and is known for their extraordinary nature reserves, containing some of the rarest plant species in the world.
树冠长廊——开普敦物种多样，它的自然保护区内有世界上最珍贵植物物种。
Tree seedlings of pioneer species and non-pioneers may respond differently to canopy gaps.
先锋种和非先锋种可能对林窗产生不同的反应。
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