白龙江濒危树种大果青杄优势种群种间关系  

Interspecific correlations among dominant populations of the natural forest of Picea neoveitchii in the Bailongjiang River

作　　者：谢飞 郭星 闫倩倩 杨帆 何丽娟 XIE Fei;GUO Xing;YAN Qianqian;YANG Fan;HE Lijuan(Institute of forestry Sciences,Bailongjiang Forestry of Gansu Province,Lanzhou 730030,Gansu,China;Gansu Bailongjiang National Forest Ecosystem Research Station,Gannan 747000,Gansu,China)

机构地区：[1]甘肃省白龙江林业科学研究所,甘肃兰州730030 [2]甘肃白龙江森林生态系统国家定位观测研究站,甘肃甘南747000

出　　处：《中南林业科技大学学报》2023年第6期105-115,共11页Journal of Central South University of Forestry & Technology

基　　金：甘肃省青年科技基金计划项目(20JR5RA087);中央财政林业科技推广示范资金项目([2022]ZYTG08)资助。

摘　　要：【目的】揭示白龙江流域大果青杄Picea neoveitchii天然林群落乔木层、灌木层、草本层主要物种的种间关系,探讨群落伴生种间相关性及的资源竞争压力,以期为大果青杄保护策略提供科学的理论依据。【方法】通过典型样地调查,采用方差比率、Pearson相关检验和Spearman秩相关检验方法,分析大果青杄群落乔、灌、草3个层次优势种群的种间相关性。【结果】大果青杄群落内共出现植物35科62属78种,其中乔木层6科10属14种,灌木层21科32属37种、草本层13科23属27种。乔木层大果青杄为第一优势树种,其次为华山松、油松等。灌木层中优势种群有蒙古栎、刺叶高山栎、茶藨子,其次为毛叶水栒子、毛黄栌、光果莸、堆花小檗、小叶鼠李等。草本层的优势种群为青绿薹草和东方草莓,其次为野棉花、牛尾蒿、蒙古风毛菊、豨莶、车前等。大果青杄群落乔木层总体联结性呈显著的正联结,灌木层和草本层种间总体联结性呈不显著正联结,结合Pearson相关检验和Spearman秩相关检验的结果,乔、灌、草3个层次种间相关性均不存在显著负相关情况,不显著种对数均大于显著种对数,总体趋于不显著负相关。【结论】大果青杄群落内物种对资源环境竞争趋于平稳,乔、灌、草3个层次物种间相关程度较弱,物种呈偶然聚合,群落演替处于较高阶段,结构稳定性较强。【Objective】An endangered species in the Bailongjiang River of Gansu Province was investigated to reveal the interspecific relationship between the main species in the arbor,shrub and herb layers of Picea neoveitchii community,and explore the interspecific correlation and resource competition pressure associated with the community,in order to provide a theoretical basis for the protection of the community.【Method】Through the investigation of the sample plots,the arbor,shrub and herb layers of the dominant population of Picea neoveitchii natural forest were analyzed by using variance ratios,the Pearson correlation test and the Spearman rank correlation test.【Result】There were 78 species belonging to 62 genera of 35 families in the community of Picea neoveitchii.Among them,14 species belonged to 10 genera of 6 families in the arbor layer,37 species belonged to 32 genera of 21 families in the shrub layer,and 27 species belonged to 23 genera of 13 families in the herb layer.Picea neoveitchii was the most dominant species in the arbor layer,followed by Pinus armandii and Pinus tabuliformis.The dominant populations in the shrub layer were Quercus mongolica,Quercus spinosa and Ribes janczewskii,followed by Cotoneaster submultiflorus,Cotinus coggygria var.pubescens,Caryopteris tangutica,Berberis aggregatea and Rhamnus parvifolia,etc.The dominant populations in the herb layer were Carex breviculmis and Fragaria orientalis,followed by Anemone vitifolia,Artemisia dubia,Saussurea mongolica,Sigesbeckia orientalis and Plantago asiatica.The arbor layer showed a significant positive association,while the shrub layer and the herb layer showed a insignificant positive association.Combined with the results of the Pearson correlation test and Spearman rank correlation test,there was no significant negative correlation among the three layers of arbor,shrub and herb.The number of insignificant species was greater than the number of significant species,and the overall trend is insignificantly negative.【Conclusion】The com

关 键 词：大果青杄 种间相关性 白龙江 濒危树种 

分 类 号：S718.541[农业科学—林学]