基于功能性状及系统发育的桂林喀斯特石山群落构建

doi:10.16088/j.issn.1001-6600.2022063003

摘要/Abstract

摘要： 群落构建是生态学研究的中心议题,采用功能性状和系统发育研究方法可以完善生态位理论在群落构建中的作用。本研究以桂林市喀斯特石山阴坡和阳坡植物群落为研究对象,基于生境内出现的82个物种构建系统发育树,对阴坡和阳坡的土壤含水量、全氮、有机质和叶干物质、叶绿素、叶厚度和木材密度的植物功能性状进行测定,检验功能性状的系统发育信号。结果表明:1)土壤含水量、全氮和有机质含量为阳坡显著高于阴坡(P<0.05);2)叶绿素、叶厚度和木材密度为阴坡显著高于阳坡(P<0.05);3)4种功能性状表现出微弱的系统发育信号;4)阴坡和阳坡群落的系统发育结构均呈发散分布,暗示生境过滤作用是阴坡和阳坡群落构建的主要驱动力。

关键词: 系统发育, 功能性状, 群落构建, 喀斯特石山

Abstract: Community assembly is a central issue in ecology research. The research methods of functional traits and phylogeny can improve the role of niche theory in community assembly. In this study, the plant communities on the sunny slope and shady slope of Guilin Karst Hills were taken as the research subjects, based on 82 species appearing in the habitat, the phylogenetic trees were constructed, soil water content, total nitrogen, organic matter and the plant functional traits of leaf dry matter, chlorophyll, leaf thickness and wood density on the sunny slope and shady slope were measured, and the phylogenetic signals of the functional traits were examined. The results showed that: 1) Soil water content, total nitrogen and organic matter content on sunny slope were significantly higher than those on shady slope (P<0.05). 2) The chlorophyll, leaf thickness and wood density on the shady slope were significantly higher than those on the sunny slope (P<0.05). 3) The four functional traits showed weak phylogenetic signals. 4) The phylogenetic structures of communities on both shady slope and sunny slope showed divergent distributions, suggesting that habitat filtration was the main driving force for the community assembly on both shady slope and sunny slope.

Key words: phylogenetic, functional traits, community assembly, karst hills

中图分类号: Q948

何芳远, 苏权, 陈坤铨, 陈善栋, 姜勇, 罗明, 梁士楚. 基于功能性状及系统发育的桂林喀斯特石山群落构建[J]. 广西师范大学学报（自然科学版）, 2023, 41(3): 171-181.

HE Fangyuang, SU Quan, CHEN Kunquan, CHEN Shandong, JIANG Yong, LUO Ming, LIANG Shichu. Exploring Community Assembly of Guilin Karst Hills Based on Functional Traits and Phylogeny[J]. Journal of Guangxi Normal University(Natural Science Edition), 2023, 41(3): 171-181.

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