| 破碎生境中影响植物种群进化动态的因素 |
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| 引用本文： | 胡世俊,闫晓慧.破碎生境中影响植物种群进化动态的因素[J].现代农业科技,2013(10). |
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| 作者姓名： | 胡世俊 闫晓慧 |
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| 作者单位： | 西南林业大学林学院国家林业局西南地区生物多样性保育重点实验室;西南林业大学林学院; |
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| 基金项目： | 国家自然科学基金(31200319);西南林业大学校重点基金(111123) |
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| 摘 要： | 综述了生境破碎中植物种群进化的影响因素。生境破碎会导致遗传漂变、近交衰退、基因流下降,降低种群的遗传变异,增加种群间遗传分化,不利于物种的进化前景。生境破碎形成许多隔离的小种群,小种群面临高的局部灭绝的风险,应当加强对破碎生境中小种群的监测,分析其进化趋势,采取必要的保护措施。
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| 关 键 词： | 生境破碎 种群 进化 |
Factors of Affecting Plant Population Evolutionary Prospect in Fragmented Habitat |
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| Abstract: | The paper summarized the factors of affecting plant population evolution in fragmented habitat.Habitat fragmentation could lead to genetic drift , inbreeding depression and reduce gene flow , erode genetic variation , and increase population differentiation , which damaged population evolutionary prospect.Habitat fragmentation could produce many isolated small populations , and small populations were faced with high possibility of local extinction. Long time survey of the small populations in fragmented habitat was necessary before analyzing evolutionary prospect of small populations and taking necessary conservation strategies. |
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| Keywords: | habitat fragmentation population evolution |
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