当然，种植基因改良树木是有好处的，但是真的有利到可以作为首选作物吗?当你仔细审视这些理由的时候，就会发现基因改良树木会带来一些严重的问题。

　　First, genetically modified trees may be resistant to one particular condition, but it doesn’t necessarily ensure their survival. You see: a typical non-modified tree population is genetically diverse. That means that for most threatening conditions, for climate, insects, and pests, whatever, there will be at least some individual trees of any given species tree that are resistant. So, even if the most of one kind of tree were killed, those few resistant ones will survive and ensure the survival of that species of tree. But, genetically modified trees are genetically much more uniform, so if there is supposed to an environmental challenge they have not been designed for, they will all die. So, if the climate changes or new pest engages in, the genetically modified trees will likely be completely wagged out.