对于大多数种类，这种结果可由最近草原扩大而来的生境异质性降低解释。
For most species, this result can be explained by recent steppe expansion associated with a decrease of habitat heterogeneity.
初步推断我国蒙系绵羊品种间的遗传分化主要是自然选择(生境异质性)作用的结果。
It is concluded that genetic differentiation of sheep breeds of Mongolian Group in China is mainly the result of natural selection (different living conditions).
研究结果表明：喀斯特环境高度异质性，小生境小气候环境差异较大。
Then gave a series of technical measures. The result shows that: Karst environment's high heterogeneity, microhabitat and micro-climate are very different.
然后作者又提出求异质性在时间上的指数，这多半采用以下方法：生境：森林为—1，草甸或稀树草原为O。
The author then proposes to develop an index of heterogeneity in time, perhaps in the following manner: Habitat, applying the numbers-1 of forest, o for meadow or savanna.
环境的异质性是绝对的和普遍存在的，种内遗传分化是物种适应异质生境的重要对策。
Natural environments are not uniform but heterogeneous, and genetic differentiation is an important strategy for organisms to cope with heterogeneous habitats.
环境的异质性是绝对的和普遍存在的，种内遗传分化是物种适应异质生境的重要对策。
Natural environments are not uniform but heterogeneous, and genetic differentiation is an important strategy for organisms to cope with heterogeneous habitats.
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