南方农业学报2025，Vol.56Issue(4)：1212-1223,12.DOI:10.3969/j.issn.2095-1191.2025.04.019
海南岛吊罗山陆均松群落乔木树种多样性及空间分布格局分析
Spatial distribution pattern in arbor species diversity of Dac-rydium pectinatum community in Diaoluo Mountain,Hainan Island
摘要
Abstract
[Objective]To study the diversity characteristics and spatial distribution pattern of dominant species of ar-bor in the Dacrydium pectinatum community in Diaoluo Mountain,Hainan Island,which could provide theoretical basis for the protection of biodiversity in the mountainous rainforest of Hainan.[Method]A 1 ha tropical forest dynamic moni-toring plot was established in the Diaoluo Mountain rainforest of Hainan.All arbor plants with a diameter at breast height(DBH)≥3 cm were recorded and surveyed,recording species names,breast circumference,tree height,crown width,and relative coordinates.Community composition,diversity indexes,spatial distribution patterns of dominant species and interspecific relationships were analyzed.[Result]Dacrydium pectinatum community in Diaoluo Mountain recorded 44 families of arbor plants,with 7 dominant families:Fagaceae(11 species),Pentaphylacaceae(10 species),Myrtaceae(9 species),Aquifoliaceae(9 species),Symplocaceae(6 species),Lauraceae(6 species)and Moraceae(6 species).Eight dominant species were identified:D.pectinatum(356 plants),Dacrycarpus imbricatus(189 plants),Schefflera hep-taphylla(161 plants),Daphniphyllum paxianum(136 plants),Alniphyllum fortunei(128 plants),Symplocos polianei(93 plants),Decaspermum cambodianum(63 plants)and Engelhardia roxburghiana(56 plants).Rare species(1 plant)accounted for 40 species,33.61%of total species and 2.24%of total individuals.Within 1 ha tropical forest dynamic monitoring plot,1787 arbor plants(DBH≥3 cm)belonging to 44 families,68 genera,and 119 species were recorded.The frequency of Dacrydium pectinatum with a DBH of 10-30 cm was relatively high,indicating a large number of indi-viduals;the frequency of those with a DBH of 3-10 cm was relatively low,indicating a small number of individuals.Spa-tial analysis revealed random distributions at 0-10 m scale for Dacrydium pectinatum,Dacrycarpus imbricatus,Schef-flera heptaphylla and Alniphyllum fortunei.Significant negative correlations were observed between Dacrydium pectina-tum and Dacrycarpus imbricatus(5-12 m scale),Schefflera heptaphylla(6-12 m scale),and Symplocos polianei(6-20 m scale).Populations of Dacrycarpus imbricatus,Schefflera heptaphylla and Daphniphyllum paxianum showed high ju-venile individuals,indicating favorable regeneration.[Conclusion]Dacrydium pectinatum community in Diaoluo Moun-tain exhibits high arbor diversity and harbors numerous rare species,underscoring its high conservation value.However,the community is currently in an unstable stage with intense interspecific competition and frequent turnover of dominant species during succession.关键词
陆均松/乔木/空间分布格局/种间关系/海南吊罗山Key words
Dacrydium pectinatum/arbor/spatial distribution patterns/interspecific correlation/Diaoluo Mountain in Hainan分类
农业科技引用本文复制引用
袁浪兴,兰国玉,魏亚情,庞通,王欣,张柠,纪克鹏..海南岛吊罗山陆均松群落乔木树种多样性及空间分布格局分析[J].南方农业学报,2025,56(4):1212-1223,12.基金项目
国家自然科学基金项目(32271603) （32271603）
海南省自然科学基金高层次人才项目(320RC733) （320RC733）
海南省重点研发专项(ZDYF2024SHFZ096) （ZDYF2024SHFZ096）
海南省自然科学基金项目(325QN459) National Natural Science Foundation of China(32271603) （325QN459）
High-level Talent Project of Hainan Natural Science Foundation(320RC733) （320RC733）
Hainan Key Research and Development Special Project(ZDYF2024SHFZ096) （ZDYF2024SHFZ096）
Hainan Natural Science Foundation(325QN459) （325QN459）
