方岩丹霞地貌岩生植物种间联结性研究  

Study on Interspecific Association of Lithophytesin Fangyan Danxia Landform

作　　者：李传磊 朱渊[2] 沈年华 LI Chuanlei(Wuxi Open University,Jiangsu Wuxi 214011)

机构地区：[1]无锡开放大学,江苏无锡214011 [2]浙江农林大学风景园林与建筑学院,浙江临安311300 [3]苏州旅游与财经高等职业技术学校,江苏苏州215104

出　　处：《林业科技》2022年第6期35-38,共4页Forestry Science & Technology

基　　金：江苏省高校哲学社会科学研究课题2021SJA0752;江苏城市职业学院教改课题YB2021018。

摘　　要：为探寻方岩丹霞地貌岩生植物种间联结性,采用方差比法,基于2×2联列表的χ2检验、联结系数AC、共同出现百分率PC和点相关系数Φ进行了12个主要种群的种间联结测定与分析。结果表明:方岩丹霞地貌岩生植物的12个主要种群总体表现为显著正联结,群落整体处于较为稳定的状态;χ2检验显示大部分种对间联结不显著,种间关联较弱,表明种群间的竞争还在环境的容纳范围内,未出现种对间极强竞争和资源危机,群落处于较稳定的发展状态;联结系数AC、共同出现百分率PC和点相关系数Φ测定都表明大部分种对联结不显著,种间联结较松散。In order to explore the interspecific association of lithophytes in Fangyan Danxia landform,the variance ratio(VR),χ2 test,association coefficient(AC),percentage co-occurrence coefficient(PC)and point correlation coefficent(Φ),which were based on 2×2 contingency tables,were used to analyze and determine the interspecific associations of the 12 main lithophytes populations.The results showed that there were significant positive correlations among these populations,the community as a whole was in a relatively stable state.Theχ2 test results showed that the connection between most species pairs was not significant,and the correlation between species was weak,indicating that the competition between populations was still within the tolerance of the environment,there was no strong competition between species pairs and resource crisis,and the community was in a relatively stable state of development;The association coefficient(AC),percentage co-occurrence coefficient(PC)and point correlation coefficent(Φ)showed that the association of most species pairs was not significant,and the interspecific association was relatively loose.

关 键 词：方岩 丹霞地貌 岩生植物 种群 种间联结 

分 类 号：S718.54[农业科学—林学]