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野生大豆群落种群空间分布特性

吴东丽1,2;张金屯3;王春乙1;薛红喜4   

  1. 1中国气象科学研究院, 北京 100081;2国家气候中心, 北京 100081;3北京师范大学生命科学学院, 北京 100875;4中国气象局大气探测技术中心, 北京 100081
  • 收稿日期:2007-11-01 修回日期:1900-01-01 出版日期:2008-08-10 发布日期:2008-08-10

Spatial distribution characteristics of species populations in Glycine soja community.

WU Dong-li1,2;ZHANG Jin-tun3;WANG Chun-yi1; XUE Hong-xi4   

  1. 1Chinese Academy of Meteorological Sciences, Beijing 100081, China; 
    2National Climate Center of China Meteorological Administration, Beijing 100
    081, China;3College of Life Science, Beijing Normal University, Beijing 1
    00875, China;4Atmospheric Observation Technology Center of China Meteorological Administration, Beijing 100081, China
  • Received:2007-11-01 Revised:1900-01-01 Online:2008-08-10 Published:2008-08-10

摘要: 野生大豆为中国二级保护植物。本文选取北京地区野生大豆群落中的28个种群,以Spearman秩相关系数为例,分析了野生大豆与其他种群的种间关系。结果表明:野生大豆与多数种群间无显著相关性,说明野生大豆在群落中的存在是相对独立的;同野生大豆呈显著性正相关的物种,它们具有相似的生物性特性,对小生境要求相似,而同野生大豆呈显著性负相关的物种,它们具有不同的生物学特性,对小生境有不同的要求;28个种群种间关系分析表明,大多数种群之间的相关性并不显著,表明群落结构发育不完善,种间关系还不稳定,体现出该群落的不成熟性;秩相关系数与生态位重叠的结合分析显示,相关性越显著的种对,其生态位重叠值也越大;以秩相关系数值为基础,参考种对的生态位重叠值,将28个种群划分为4个生态种组,各生态种组内的种具有相同的资源利用方式和生态需求。

关键词: 赖草, 营养繁殖世代, 分蘖株, 根茎, 芽, 构件, 年龄结构, 无性系生长

Abstract: Glycine soja mainly distributes in eastern Asia, and its germplasm is abundant in China. However, G. soja is under the threat of extinction because of human disturbances, and has been ranked as an endangered species in China. For its conservation, 28 species in G. soja community were studied with Spearman’s rank correlation to assess the interspecific relationships of G. soja community in Beijing. The results indicated that there were no significant relationships between G. soja and most of other species, which implied thatG. soja was distributed independently in the community. The species having ositive associations with G. soja owned similar biological features and habitats, while those having negative associations with G. soja wned different biological features and habitats. Most interspecific associations of species-pairs among the 28 species were not significant, which indicated that the community development was not perfect, and the interspecific relationship was not stable. Analyses of rank correlation coefficient and niche overlap showed that the degree of niche overlap was high when interspecific association for pairs of species was high. The 28 species were divided into 4 ecological groups by using rank correlation and niche overlap, and the species in the same ecological groups had the same utilization ways of resources and the same ecological demands.

Key words: Leymus secalimus, Vegetative reproduction generation, Tiller, Rhizome, Bud, Module, Age structure, Clone growth