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题目材料：
Much of ecological theory consists of models that are so highly idealized that they are of little real-world predictive value. In addition, many of the parameters used in models such as birth and death rates are exceedingly difficult to estimate accurately in the field. Consequently, ecological theory is rarely directly relevant to the practice of conservation biology. One notable exception is MacArthur's theory of island biogeography, which predicts the species richness of an island on the basis of its size and degree of isolation. This theory could provide important insights into nature preserves, which can be analogous to islands, often consisting of relatively undisturbed ecosystems surrounded by biologically distinct areas.
以上解析由 考满分老师提供。
