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ex situ conservation of plant
释义
ex situ conservation of plant
Encyclopedia
农学
〔资源保存〕
释
ex situ conservation of plant
植物迁地保存
当物种原有的生境破坏严重,或原有生境消失,或物种数量下降到极低水平,种内难以进行繁殖或物种的生存条件突然恶化时进行异地保护的方法。又称迁地保护、非原生境保护、异地保护。
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operator sine function
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operator-theoretic method
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operator-valued function
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operator with a trace
operator with continuous spectrum
operator with dense domain
operator with the boundary condition
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