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Position: Home > Articles > Interspecific Association of the Plant Communities in Natural Secondary Forests on North Slope of Luya Mountain Journal of Northwest Forestry University 2020 (1) 54-61

芦芽山阴坡典型天然次生林群落的种间联结性

作者：

武秀娟

单位：

山西省林业科学研究院

关键词：

芦芽山;华北落叶松-云杉天然次生林;种间联结;方差比率;联结系数

摘要：

以芦芽山阴坡典型华北落叶松-云杉天然次生林群落为研究对象,采用方差比率法(VR),结合χ~2统计量、联结系数(AC)、共同出现百分率(PC)和Spearman秩相关系数,分析了乔木层、灌木层和草本层优势种群的总体关联性和各层种对间的关联性。结果表明,优势种群间的总体关联性表现为乔木层、草本层不显著负关联,灌木层为不显著正关联;乔、灌、草各层显著关联的种对数占各自总种对数的比例分别为10.0%、10.9%和26.7%,多数种对间联结系数和共同出现百分率不高,联结关系松散,独立性相对较强;乔木层以负相关占优势,而灌、草层以正相关占优势。乔木层通过种间竞争达到了稳定状态,灌草层通过适应生境的分离避免竞争而达到平衡状态。

译名：

Interspecific Association of the Plant Communities in Natural Secondary Forests on North Slope of Luya Mountain

作者：

WU Xiu-juan;Shanxi Academy of Forestry Sciences;

关键词：

Luya Mountain;;Larix principis-rupprechtii-Picea spp.secondary forest;;interspecific association;;variance ratio;;correlation coefficient

摘要：

Typical communities of the secondary natural forest of Larix principis-rupprechtii-Picea spp.occurring in Luya Mountain were selected as research objects to investigate the overall interspecific associations between the dominant plant populations in different layers(trees,shrubs and herbs) and between the species within the layer were examined by using the variance ratio method Combined with χ~2 test,association coefficient,percentage co-occurrence and Spearman correlation coefficient.The results showed that the overall interspecific associations among dominant plant populations in tree and herb layers displayed non-significantly negative,that in the shrub layer displayed non-significantly positive.The proportions of species-pairs with significant correlation in the tree,shrub and herb layers were 10.0%,10.9%,and 26.7%,respectively.The coefficients of interspecies associations were low,and the percentages of coexistence of two species were not high,indicating weak association and strong capability of independency of the species.The major species in the layers of tree,shrub and herb had obvious predominance with negative correlation,positive correlation and positive correlation,respectively.The population structure of tree layer reached a steady state through competitions,while those of shrub and herb layers reached the steady state through habitat segregation.

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芦芽山阴坡典型天然次生林群落的种间联结性

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