SPECIES-DIVERSITY AND PATTERN-DIVERSITY IN STUDY OF ECOLOGICAL SUCCESSION
SPECIES-DIVERSITY AND PATTERN-DIVERSITY IN STUDY OF ECOLOGICAL SUCCESSION
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DOI：
10.1016/0022-5193(66)90133-0
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发表时间：
1966-01-01
影响因子：
2
通讯作者：
PIELOU, EC
中科院分区：
文献类型：
--
作者：
PIELOU, EC
任何包含一个以上物种的生物集合的一个可测量的特性是它的“物种多样性”。综述了基于标本信息含量测量物种多样性的方法。由无根生物群落组成的集合，如陆生植物，也具有“模式多样性”。当不同物种的个体完全混合在一起时，一个群落的模式多样性很高，在任何小的分区中通常都有几个物种存在；如果物种是分开的，那么小的子区域可能只包含少数物种的个体，这是低的。提出了一种测量模式分集的方法。在5年或10年的时间里，我们观察到了浓密的幼树群落中物种多样性和模式多样性的变化。结果表明，由于树木之间的竞争导致的自然间伐导致了格局多样性的增加。
A measurable property of any collection of organisms containing more than one species is its "species-diversity." Methods of measuring species-diversity based on the information content of a collection are reviewed. A collection consisting of a community of sessile organisms, such as terrestrial plants, also has "pattern-diversity." The pattern-diversity of a community is high when the individuals of the various species are thoroughly mingled so that several species are usually present in any small sub-area; it is low if the species are segregated so that small sub-areas are likely to contain individuals of only a few of the species. A method of measuring pattern-diversity is proposed. The changes that occurred in both species- and pattern-diversity, during periods of five or ten years, in young dense communities of forest trees were observed. It was found that the natural thinning resulting from competition among the trees caused an increase in pattern- diversity.