秦岭南坡松栋林群落演替过程中种间联结性和相关性研究张岗岗】王得祥广张明霞▽刘文桢3郭小龙彳（1西北农林科技大学林学院，陕西畅凌712100；2青海省社会科学院,青海西宁810000；3小陇山林业科学研究所,甘肃天水741020）摘要：为了揭示秦岭南坡松栋林群落动态变化过程中物种间关系与群落演替的相互作用，基于2x2列联表，采用方差比率法、X?检验、Jaccard指数和Spearman秩相关性系数探讨了油松林T松栋混交林-锐齿栋林这一演替序列过程中3个演替阶段群落优势种群的种间联结性和相关性。结果表明：（1）油松林、松栋混交林和锐齿栋林群落总体联结性均为显著正联结，各口具有相对的稳定性。（2）油松和松栋混交林群落正负联结性和相关性比例较小，群落稳定性均低于锐齿栋林群落。（3）先锋种间及其与前期过渡种间、顶级种间及其与后期过渡种间竞争较为激烈，过渡种间（包插前期过渡种间、前期过渡种与后期过渡种间、后期过渡种间）正联结占优势，较为稳定。（4）不同演替阶段群落可分别划分为4个、5个、4个生态种组。综上所述，秦岭南坡松栋混交林演替过程中种间关系逐渐趋于稳定共存，实践中及时调整种间关系可促使秦岭南坡松栋林群落趋丁•健康稳定，有效缩短演替的进程。关键词：秦岭；松栋林群落；演替；种间联结；相关性中图分类号：S718.5；Q948.1文献标识码：A文章编号：InterspecificAssociationsandcorrelationofmainspeciesintheSuccessionProcessofPineOakForestsCommunityontheSouth-facingSlopesinQinlingMountainsZHANGGanggang1,WANGDexiang'\ZHAGNMingxia1LIUWenzhen3,GUOXionglong3(ICollegeofForestry;NorthwestA&FUniversity,Yangling,Shaanxi712100,China;2QinghaiAcademyofSocialSciences,Xining,Qinghai81()0()0;3XiaolongshanResearchinstituteofforestry,Tianshui,Gansu74IO2O,China)Abstract:Torevealthethecomplexrelationshipsbetweenthecharacteristicsofinterspecificassociationsandcommunitiessuccessioninthesuccessionprocessofpineoakforestscommunityonthesouth-facingslopesinQinlingMountains.Basedon2x2contingencytables,weusedtheVarianceRatio,£testandJaccardindexandSpearman'srankcorrelationcoefficienttostudythecharacteristicsofinterspecificassociationandcorrelationamongmainplantpopulationsofdifferentsuccessionalstagesinthesuccessiveserialsfromPinustabulaeformisforesttoP.tabulaeformis-Q・alienavar.cicuteserratamixedforestthentothesubsequentQuercusalienavar.cicuteserrataforestonthesouth-facingslopesinQinlingMountains.Theresultsshowedthat:(1)TheoverallinterspecificassociationsofdominantspeciesinPinustabulaefonnisforest,Quercusalienavar.acuteserrataforestandPinustcibulaeformis-Quercusalienavar.acuteserratamixedforestaresignificantpositiveconnection,eachcommunitieshasarelativestability・(2)ThepositiveandnegativeinterspecificassociationsandcorrelationpercentofmainspeciesinPinustahulaeformisforestandPinustabulaefonnis-Quercusalienava匚Acuteserratamixedforestissmaller,and收稿bl期：；修回日期：基金项目：林业公益性行业科研专项（201204504）；国家白然科学基金（31470644）；天水市科技支撑计划（2014-35）作者简介：张岗岗（1989-）,男，在读硕士研究生，主要从事森林可持续经营研究。E-mail：zg201394@163.com*通信作者：王得祥，教授，博士生导师，主要从事森林生态少可持续经营研究。E-mail：wangdx66@126.comtheircommunitystabilityareinferiortoQuercusalienava匚Acuteserrataforest.(3)InterspecificcompetitionAmongpioneerspecies,pioneerspeciesandpriortransitionaryspecies,climaxspecies,posttransitionaryspeciesandclimaxspeciesismoreintense,buttherearemorepositiveconnectionamongthetransitionalspecies(includingpriortransitionaryspecies,priortransitionaryspeciesandposttransitionaryspecies,posttransitionaryspecies),andtheinterspec...