紫金山栓皮栎群落主要乔木种群的种间联结性  

Interspecific associations of the tree populations of the Quercus variabilis community in Purple Mountain,Nanjing

作　　者：沈年华 Shen Nianhua(Suzhou Tourism and Finance Institute,Jiangsu Union Technical Institute,Suzhou 215104,China;Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]江苏联合职业技术学院苏州旅游与财经分院,江苏苏州215104 [2]南京林业大学,江苏南京210037

出　　处：《江苏林业科技》2022年第3期42-47,共6页Journal of Jiangsu Forestry Science & Technology

基　　金：江苏省教育科学“十三五”规划课题“省级名师工作室引领作用及建设策略研究”(D/2016/03/70);江苏联合职业技术学院立项课题“五年制高职《园林植物》课程教学资源建设研究”(B/2020/10/079)。

摘　　要：为探寻南京紫金山栓皮栎(Quercus variabilis)群落主要种群的种间联结性,采用方差比法、χ^(2)检验、联结系数(AC)、共同出现百分率(PC)和点相关系数(Φ)对18个乔木种群的种间联结测定与分析。结果表明:栓皮栎群落的总体联结性VR<1,χ^(2)_(0.95)(56)<W<χ^(2)_(0.05)(56),主要乔木种群总体表现为不显著负联结,各物种趋于独立,群落整体不稳定;χ^(2)检验显示绝大多数(90.20%)的种对间联结不显著,种间联结较弱,群落处于不稳定演替阶段;联结系数AC测定表明大部分(70.59%)种对联结不显著,种间联结较为松散;共同出现百分率PC测定表明种间总体上联结较为松散,种间对生境的需求有所不同,同时出现的概率小;点相关系数Φ测定表明多数(57.52%)种对呈负联结,大部分种对(90.19%)的种间联结程度较弱。To explore the interspecific association of the main populations of Quercus variabilis community in Purple Mountain,Nanjing,the variance ratio(VR),χ^(2)test,association coefficient(AC),percentage co-occurrence coefficient(PC)and point correlation coefficient(Φ)were used to analyze and determine the interspecific associations of the 18 main tree populations.The results showed that there was no significant negative correlations among these 18 main tree populations based on VR less than one(χ^(2)_(0.95)(56)<W<χ^(2)_(0.05)(56)),as the species tended to be distributed independently and the community was unstable.Theχ^(2)test results showed that the majority(accounting for 90.20%of the total logarithm)of species pairs had no significant association,the interspecific association among the species was weak,and the community was in the stage of unstable succession.The determination of AC showed that most species(70.59%)had no significant pair association,and the interspecific association was relatively loose.The determination of PC showed that the interspecific connection was loose,the species generally had different needs for habitat,and the probability of simultaneous occurrence was small.TheΦshowed that most species pairs(57.52%)showed negative association,and the interspecific association degree of most species pairs(90.19%)was weak.

关 键 词：栓皮栎 种群 种间联结 紫金山 南京 

分 类 号：S718.54[农业科学—林学] S792.18