Biological invasion , exotic species , native species, invasion ecology and related concepts were discussed.

探讨了生物入侵 、 外来种及入侵种等相关的概念.

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The leaf venation of eighty - nine species, including two exotic species, were cleared and observed.

制作并观察了89种植物叶片的脉序, 其中2种为外国种.

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That both indigenous species and exotic species should be recorded separately for Nature Reserve was suggested.

自然保护区管理部门不仅要建立本土物种的档案,也应建立外来物种的档案.

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