|本期目录/Table of Contents|

[1]俞文灏 吴保锋 刘勇波.生境破碎化对动植物遗传多样性的影响研究进展[J].应用与环境生物学报,2019,25(02):1-19.[doi:10.19675/j.cnki.1006-687x.2018.07040]
 YU Wenhao,WU Baofeng & L IU Yongbo**.The Effects of Habitat fragmentation on genetic diversity of plants and animals*[J].Chinese Journal of Applied & Environmental Biology,2019,25(02):1-19.[doi:10.19675/j.cnki.1006-687x.2018.07040]
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生境破碎化对动植物遗传多样性的影响研究进展()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年02期
页码:
1-19
栏目:
综 述
出版日期:
2019-04-25

文章信息/Info

Title:
The Effects of Habitat fragmentation on genetic diversity of plants and animals*
文章编号:
201807040
作者:
俞文灏 吴保锋 刘勇波
中国环境科学研究院,环境基准与风险评估国家重点实验室 北京 100012
Author(s):
YU Wenhao WU Baofeng & L IU Yongbo**
?State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
关键词:
生境破碎化遗传多样性基因交流遗传漂变滞后效应
Keywords:
habitat fragmentation genetic diversity gene flow gene drift time-delayed effect
DOI:
10.19675/j.cnki.1006-687x.2018.07040
摘要:
生境破碎化是生物多样性降低的主要原因之一,但是研究多集中在生境破碎化对物种和生态系统多样性的影响,而对遗传多样性的影响机理和效应仍不清楚。综述了生境破碎化的成因、度量和理论基础,以及对动植物遗传多样性的影响机理和生态学效应。生境破碎化主要通过增加种群间隔离程度和降低有效种群大小等途径限制种群间基因交流、提高遗传漂变频率,从而影响动植物遗传多样性;但是影响效应取决于植物繁殖策略和动物迁移能力,以及传粉方式、种群大小、生命周期、生境的景观特性等因素。而且生境破碎化对动植物遗传多样性的影响大多存在滞后效应。由此可见,生境破碎化对动植物遗传多样性的影响复杂,受影响因素多,而且不易及时发现而忽略生境破碎化对遗传多样性的负面影响。因此,未来应加强生境破碎化对动植物遗传多样性的影响研究,特别是在更长时间尺度上的生境破碎化研究。(表1参73)
Abstract:
Habitat fragmentation (HF) is considered as a key factor in decreasing biological diversity. Previous studies focused on species and ecosystem diversity, while the effects of HF on genetic diversity and its mechanism remain s unclear. Here we reviewed the causes, measurements and theoretical foundation of HF, and the ecological consequences and effects of HF on genetic diversity of plants and animals. Habitat fragmentation affects genetic diversity through increasing isolation distance among populations and decreasing effective population size, with the alteration of gene flow frequency among populations and genetic drift probability within populations. However, the HF effects depend on the reproductive strategy of plants and the mobility of animals, which interacts with other factors, such as mating pattern, population size, life cycle, landscape attributes and so on. For example, HF significantly affects animals with low mobility, such as mammals and amphibians, while animals with high mobility, like birds, are insensitive to HF. Trees can buffer the effects of genetic drift due to their longevity, but grasses and shrubs with short life cycle cannot. Moreover, there is often a time-delayed effect of HF on genetic diversity. These results indicate that the effect mechanism of HF on genetic diversity is complicated, and its negative effects are likely to be ignored because of the time-delayed phenomenon . Hence, it is important to study the effects of HF on genetic diversity, especially in a longer temporal scale.? ? ? ? ?

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备注/Memo

备注/Memo:
收稿日期: 2018-07-28 接受日期 Accepted: 2018-09-25*中央级公益性科研院所基本科研业务专项(2006001001004005)资助 **通讯作者(E-mail: liuyb@craes.org.cn)点击摘要页题目后的“PDF”可下载阅读全文;本文为已录用的作者修定稿,尚未经编辑全面修改。引用本文请注明出处本刊;发表刊期和页码将以正式出版时的安排为准,但DOI确定不变。
更新日期/Last Update: 2018-11-14