西南林业大学学报2024，Vol.44Issue(7)：34-44,11.DOI:10.11929/j.swfu.202310001
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
Study on the Interspecific Associations in Arbor Layer of Evergreen Monsoon Rainforest in Fangcheng Golden Camellia National Nature Reserve
摘要
Abstract
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.关键词
防城港/常绿季雨林/种间联结/生态种组/群落/自然保护区Key words
Fangchenggang/evergreen monsoon rainforest/interspecific association/ecological species group/community/nature reserve分类
农业科技引用本文复制引用
梁志慧,梁士楚,邓镕馨,蔡中伦,姜勇,董阳,黄名丽,李武峥..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[J].西南林业大学学报,2024,44(7):34-44,11.基金项目
国家自然科学基金项目(32260283)资助 （32260283）
中央财政林业改革发展资金项目(GXZ2022-C3-002212-YZLZ)资助 （GXZ2022-C3-002212-YZLZ）
广西金花茶生态研究项目(2022-HT/XY-61)资助 （2022-HT/XY-61）
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(2022-HT/XY-60)资助 （2022-HT/XY-60）
2023年广西壮族自治区大学生创新创业训练计划项目(S202310602177)资助. （S202310602177）
