| 山西翅果油树群落优势种群分布格局研究 |
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| 引用本文： | 张峰,上官铁梁.山西翅果油树群落优势种群分布格局研究[J].植物生态学报,2000,24(5):590-594. |
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| 作者姓名： | 张峰 上官铁梁 |
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| 作者单位： | [1]山西大学生命科学系,太原 [2]山西大学环境科学系,太原 |
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| 基金项目： | 山西省留学基金!（960024） |
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| 摘 要： | 应用扩散系数、聚集指数、平均拥挤度、聚块性指数、Green指数、聚集强度、Poisson分布和负二项分布的X2拟合检验等方法，研究了山西翅果油树群落优势种群的分布格局，并用相关分析比较了6个指数间的关系，结果表明：翅果油树分布格局呈随机型，其余22个优势种的分布格局皆为聚集型，这主要与物种本身的生态和生物学特性有关，以及与物种的竞争排斥作用有密切联系。在判定物种分布格局的8种方法中，以方差／均值比率、Poisson分布和负二项分布的X2拟合检验联合运用效果较好，不仅生态学意义明确，而且结果具有严格的统计学意义。
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| 关 键 词： | 翅果油树群落 优势种群 分布格局 山西 |
POPULATION PATTERNS OF DOMINANT SPECIES IN ELAEAGNUS MOLLIS COMMUNITIES, SHANXI |
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| ZHANG Feng.POPULATION PATTERNS OF DOMINANT SPECIES IN ELAEAGNUS MOLLIS COMMUNITIES, SHANXI[J].Acta Phytoecologica Sinica,2000,24(5):590-594. |
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| Authors: | ZHANG Feng |
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| Abstract: | The patterns of dominant species in Elaeagnus mollis communities in Shanxi were studied using the following measures: dispersal index, clump intensity, mean crowding, patchiness index, Green's index, intensity index, the test for fit to the Poisson and negative binomial distribution. The relationships among the first six methods were analyzed by correlation coefficient. The results indicated that E. mollis showed random distribution while the other species in the community were all clumped. Moreover, the patterns not only were closely related to the ecological and biological characteristics of each species, but also relationships of competitive exclusion among them. Among 8 methods used to measure pattern, the application of variance/mean ratio together with the X2 test for fit to the Poisson and negative binomial distributions were deemed the best as their ecological meaning is explicit. Furthermore, their results have more obvious statistical significance. |
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| Keywords: | Elaeagnus mollis community Dominant populations Pattern Shanxi |
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