首页|防城金花茶国家级自然保护区常绿季雨林乔木层种间联结研究

防城金花茶国家级自然保护区常绿季雨林乔木层种间联结研究

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
采用方差比率、x2检验、AC指数、Pearson相关、Spearman秩相关系数检验,结合PCA排序和采用M.Godron群落稳定分析方法,对群落中的16个乔木层优势种进行种间联结分析、生态种组划分和群落稳定性评估,揭示防城金花茶国家级自然保护区内常绿季雨林群落的种间关系及其群落稳定性.结果表明:乔木层优势种的总体关联性呈不显著负联结,群落整体结构松散;x2检验显示正负联结比出现异常,显著率为1.6％;AC指数的正负联结比为0.125,但显著率偏大,为了更全面准确地判定群落的种间关联性应结合x2检验和AC指数等方法进行综合量化;Pearson相关和Spearman秩相关系数检验结果较一致,即种间关系均以负相关为主,正负相关比皆较低,显著率都较小;PCA将16个乔木层优势种划分为3个生态种组,推测第1生态种组多为演替早期喜光喜温、耐阴耐旱瘠的先锋树种,第2生态种组多为演替中期喜温暖湿润气候的常绿物种,第3生态种组均为演替后期喜光喜湿的常绿物种;M.Godron稳定性结果显示交点值为(30.93,69.07),表明群落处于不稳定阶段,且为不稳定的演替中后期.
Study on the Interspecific Associations in Arbor Layer of Evergreen Monsoon Rainforest in Fangcheng Golden Camellia National Nature Reserve
To reveal interspecific relationships within the evergreen monsoon rainforest communities and ex-plore their community stability in Fangchenggang Golden Camellia National Nature Reserve,this study em-ployed Variance Ratio(VR),x2test,AC index,Pearson correlation,and Spearman rank correlation coefficient.Ad-ditionally,PCA sequencing and the M.Godron community stability analysis method were utilized for interspecif-ic association analysis,ecological species group classification,and community stability assessment of the 16 dom-inant tree species in the community.The findings are summarized as follows:The overall correlation among dom-inant species in the tree layer was not significantly negative,indicating a relatively loose community structure.The x2 test shows that the positive and negative connection ratio is abnormal,and the significant rate is 1.6％.The positive and negative connection ratio of AC index is 0.125,but the significant rate is large.In order to determine the interspecific association of the community more comprehensively,the comprehensive quantification should be combined with x2 test and AC index.The results of both Pearson correlation and Spearman rank correlation coeffi-cient tests were consistent,that is,the interspecific relationship is mainly negative correlation,the positive and negative correlation is low,and the significant rate is small.Principal Component Analysis(PCA)categorized the 16 dominant tree layer species into 3 ecological species groups.It is estimated that the first ecological species group is mostly pioneer species that liked light in the early succession and drought tolerance,the second ecologic-al species group is evergreen species with warm and humid climate in the middle succession,and the third ecolo-gical species group is evergreen species that like light and humidity in the late succession.The intersection value of the M.Godron stability results is(30.93,69.07),indicating that the community is in an unstable phase and is in the middle and late period of unstable succession.

Fangchenggangevergreen monsoon rainforestinterspecific associationecological species groupcommunitynature reserve

梁志慧、梁士楚、邓镕馨、蔡中伦、姜勇、董阳、黄名丽、李武峥

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广西师范大学生命科学学院,珍稀濒危动植物生态与环境保护教育部重点实验室,广西桂林 541006

广西壮族自治区防城金花茶国家级自然保护区管理中心,广西防城港 538021

防城港 常绿季雨林 种间联结 生态种组 群落 自然保护区

国家自然科学基金项目中央财政林业改革发展资金项目广西金花茶生态研究项目防城金花茶国家级自然保护区维管植物多样性及其保护研究项目2023年广西壮族自治区大学生创新创业训练计划项目

32260283GXZ2022-C3-002212-YZLZ2022-HT/XY-612022-HT/XY-60S202310602177

2024

10.11929/j.swfu.202310001

西南林业大学学报
西南林业大学

西南林业大学学报

CSTPCD北大核心
影响因子：0.773
ISSN：2095-1914
年,卷(期)：2024.44(7)
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