nodum
... 复原分类群 restored taxa 植被分类群 nodum 罕见分类群 rare taxa ...
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鉴于多建群种植被的客观存在及其存在形式多样， 在分类系统中给出相应的位置——多建群种植被纲。
Steps and methods to establish the vegetation classification systems are given and the new plant life-form and vegetation classification system are established.
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