“American vegetation classification system”的概念、定义、翻译、参考文献-科学参考

单词	American vegetation classification system
释义	American vegetation classification system Encyclopedia 理学美国植被分类系统释 American vegetation classification system美国植被分类系统美国建立的高级单位主要依据生态-外貌结构特征，中低级单位侧重于群落的种类组成，基于鉴别种（diagnostic species）（生长型）的等级分类系统。
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