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animal
:
vegetation
>
field outroot
Contents
·
No. 1
·
Containing Phrases
·
More results...
No. 1
野外绝灭
extinct in the wild(ew)
如果已知一分类单元只生活在栽培、圈养条件下或者只作为自然化种群(或种群)生活在远离其过去的栖息地时,即认为该分类单元属于
野外绝灭
。于适当时间(日、季、年),对已知的和可能的栖息地进行彻底调查,如果没有发现任何一个个体,即认为该分类单元属于
野外绝灭
。但必须根据该分类单元的生活史和生活形式来选择适当的调查时间。
Containing Phrases
field outroot species