在一个案例中，一群自然资源保护主义者已经自己采取行动，通过协助迁徙的方式来拯救一种濒临灭绝的树——佛罗里达香榧树。
In one case, a group of conservationists has already taken it upon itself to try on their own to save an endangered tree, the Florida Torreya tree, through Assisted Migration.
在拥有特殊微气候的北佛罗里达，香榧树曾经数量众多。
Torreya used to be found in abundance in the northern part of Florida, which has a specific microclimate.
无论是那种原因，该区域的很多地方都变得很干旱，同原来香榧树生长的佛罗里达微气候已经不同。
Either way, many areas across the region are becoming dries, so it's unlikely that Torrey would have the conditions it needs to survive anywhere within its original Florida micro-climate.
在野外生长的树木一般可以满足这些要求，但是研究中心没有能力保护数量足够多，基因足够多样化的香榧树。
Tree populations in the wild usually satisfy those criteria, but research centers would simply not have enough capacity to keep a large and diverse population of Torreya trees.
在野外生长的树木一般可以满足这些要求，但是研究中心没有能力保护数量足够多，基因足够多样化的香榧树。
Tree populations in the wild usually satisfy those criteria, but research centers would simply not have enough capacity to keep a large and diverse population of Torreya trees.
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