大陈岛植物群落结构及物种组成  

Community structure and species composition in Dachen Island

作　　者：杨佰润 吴江 官凯程 沈伟康 洪旭杰 王江[1] YANG Bairun;WU Jiang;GUAN Kaicheng;SHEN Weikang;HONG Xujie;WANG Jiang(College of Life Science,Taizhou University,Taizhou 318000,Zhejiang,China;Forestry Technology Extension Station,Taizhou 318025,Zhejiang,China)

机构地区：[1]台州学院生命科学学院,浙江台州318000 [2]台州市黄岩区林业技术推广总站,浙江台州318025

出　　处：《浙江农林大学学报》2025年第2期321-328,共8页Journal of Zhejiang A&F University

基　　金：浙江省自然科学基金资助项目(LY22C030001);国家自然科学基金资助项目(31870504)。

摘　　要：【目的】研究大陈岛植物群落结构、物种组成及其与土壤因子的关系,为大陈岛海岛植物维护与管理提供科学依据。【方法】基于大陈岛15个20 m×20 m的海岛植物监测样地,结合冗余分析(RDA)等方法,对群落物种组成、径级结构、群落相似性及其环境因子进行研究。【结果】大陈岛群落共记录木本植物34种,隶属26科32属。物种个体径级分布总体呈倒“J”型。以木麻黄Casuarina equisetifolia为优势物种的群落多样性指数较高,以柃木Eurya japonica、天仙果Ficus erecta为优势物种的群落多样性指数较低。以柃木-黄檀Dalbergia hupeana为优势物种的群落和以柃木-海州常山Clerodendrum trichotomum为优势物种的群落之间相似度最高,以天仙果为优势物种的群落和以海州常山-朴树Celtis sinensis为优势物种的群落之间相似度最低,而且土壤全磷质量分数与群落相似性系数呈负相关。土壤硝态氮、铵态氮和有效磷质量分数与群落物种多样性呈现正相关。【结论】大陈岛植物群落主要以木麻黄、柃木、天仙果为优势物种,土壤全磷质量分数与群落的物种组成存在紧密的联系。[Objective]This study,with an exploration of the structure and species composition of the plant community of Dachen Island and its relationships with soil factors,is aimed to provide a scientific basis for its maintenance and management.[Method]Based on the investigation of 15 plots(20 m×20 m)on Dachen Island and combining with the method of Redundancy Analysis(RDA),a study was conducted of its species composition,diameter structure,community similarity and environmental factors.[Result]The Dachen Island community boasts a record of 34 species of woody plants,which belong to 26 families and 32 genera.The sizeclass distribution of species individuals was generally inverse J-shaped.The communities dominated by Casuarina equisetifolia had higher value of diversity indexes,while those dominated by Eurya japonica and Ficus erecta had lower value diversity indexes.The communities dominated by E.japonica and Dalbergia odorifera and those dominated by E.japonica and Clerodendrum trichotomum had the highest similarity coefficient,while the community dominated by F.erecta and those dominated by Clerodendrum trichotomum and Celtis sinensis had the lowest similarity coefficient.Furthermore,there was a negative correlation between soil total phosphorus content and community similarity coefficient whereas soil nitrate nitrogen,ammonium nitrogen,and available phosphorus showed a positive correlation with species diversity of communities.[Conclusion]The communities in Dachen Island are primarily dominated by Casuarina equisetifolia,E.japonica and F.erecta,and the soil total phosphorus had a close link with species composition.

关 键 词：海岛植物 物种组成 径级结构 相似性分析 土壤环境因子 大陈岛 

分 类 号：S718.5[农业科学—林学]