| 生境片断化对遗传多样性的影响 |
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| 引用本文： | 文陇英.生境片断化对遗传多样性的影响[J].科学．经济．社会,2006,24(1):70-72. |
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| 作者姓名： | 文陇英 |
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| 作者单位： | 乐山师范学院,化学与生命科学系,四川,乐山,614004 |
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| 摘 要： | 由于人类活动造成的生境破碎,对生态系统的影响很大,使片断状生境中的生物因子和非生物因子都发生了一系列变化,生境片断化将物种种群分割为若干个小种群,影响物种的迁入和迁出,基因的流动受阻,遗传变异丧失,加之小种群易于灭绝,结果使种群遗传多样性减少,从而加速物种灭绝的进程。
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| 关 键 词： | 生境片断化 小种群 遗传多样性 物种灭绝 |
| 文章编号： | 1006-2815（2006）01-0070-03 |
| 收稿时间： | 2005-11-17 |
| 修稿时间： | 2005年11月17 |
The Effects of Genetic Diversity From Habitat Fragment |
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| WEN Long-ying.The Effects of Genetic Diversity From Habitat Fragment[J].Science Economy Society,2006,24(1):70-72. |
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| Authors: | WEN Long-ying |
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| Abstract: | There are tremendous effects on ecology system produced by habitat fragment due to human beings activities.This would be lead to a series changes in biological factors and nonbiological factors and result in grave consequences,such as the species population divided into many small populations,the gene flow was impacted because of the immigrate and emigrate of species were affected,and the population would lose genetic variation.Moreover,these small populations would become extinct more easily.As the result,the genetic diversity of population should decrease.Thus could be prompt the process of species extinct. |
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| Keywords: | habitat fragment small population genetic diversity species extinct |
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