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题目材料：
Reestablishing commercial tree species after the destruction of forests by wildfires is often appropriate where timber production is the primary aim (such as on tree plantations) and dense forests are characteristic. However, establishing dense forests is inappropriate where they did not exist before, because this creates conditions that can increase the likelihood of fires. Such naturally unsustainable conditions are appropriate only with long-term commitments to managing sites for intensive timber production. This commitment is not appropriate where intensive timber production is neither consistent with ecological goals nor economically sound.
Tree planting to reestablish denser forest cover on burned sites may also be unwise in view of other ecological objectives, since large, slowly generating, undisturbed areas often exhibit considerable biodiversity. For example, following volcanic eruptions, some unsalvaged and unplanted areas host rich communities of animals.
Tree planting to reestablish denser forest cover on burned sites may also be unwise in view of other ecological objectives, since large, slowly generating, undisturbed areas often exhibit considerable biodiversity. For example, following volcanic eruptions, some unsalvaged and unplanted areas host rich communities of animals.
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以上解析由 考满分老师提供。
