西双版纳热带季节雨林椆琼楠种内功能性状  

Intraspecific Functional Traits of Beilschmiedia roxburghianain Xishuangbanna Tropical Seasonal Rainforest

作　　者：李晶晶 林露湘[1] 木陈会 李巧明[1] LI Jingjing;LIN Luxiang;MU Chenhui;LI Qiaoming(Key Laboratory of Tropical Forest Ecology,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Kunming,Yunnan 650201;University of Chinese Academy of Sciences,Beijing 100049;Nabanhe Basin National Nature Reserve Administration,Jinghong,Yunnan 666100,China)

机构地区：[1]中国科学院西双版纳热带植物园热带森林生态学重点实验室,云南昆明650201 [2]中国科学院大学,北京100049 [3]纳板河流域国家级自然保护区管理局,云南景洪666100

出　　处：《贵州农业科学》2018年第11期121-124,共4页Guizhou Agricultural Sciences

基　　金：国家自然科学基金面上项目"高多样性生态系统中遗传多样性和物种多样性互作效应"(3737026)

摘　　要：探究椆琼楠个体功能性状间的相关性及功能性状随胸径梯度的变化情况,为物种共存和群落构建提供理论基础。以西双版纳热带季节雨林310株椆琼楠为研究对象,测量树高、叶绿素含量、叶片厚度、叶面积、比叶面积、叶片干物质含量和木质密度等功能性状以及胸径,进行Pearson相关分析和线性回归分析。结果表明:叶绿素含量与叶片厚度呈显著正相关、与比叶面积呈显著负相关;叶片厚度与叶片干物质含量呈显著正相关、与比叶面积呈显著负相关;叶片干物质含量与比叶面积呈显著负相关。椆琼楠树高、叶绿素含量、叶片厚度和叶片干物质含量随胸径梯度递增呈线性升高趋势;叶面积、比叶面积和木质密度随胸径梯度递增呈线性降低趋势。The height,chlorophyll content,leaf thickness,leaf area,specific leaf area,leaf dry matter content,wood density and diameter at breast height(DBH)of 310 Beilschmiedia roxburghiana trees in Xishuangbanna Tropical Seasonal Rainforest were determined and their correlations were evaluated by Pearson’s correlation and linear regression analysis to provide the theoretic basis for species coexistence and plant community construction by discussing the correlations between different intraspecific functional traits and between the functional traits and DBH in B.roxburghiana.Result:The chlorophyll content is positively and significantly related to leaf thickness but negatively and significantly related to specific leaf area.The leaf thickness is positively and significantly related to leaf dry matter content but negatively and significantly related to specific leaf area.There is a significant negative correlation between leaf dry matter content and specific leaf area.The height,chlorophyll content,leaf thickness and leaf dry matter content of B.roxburghiana show the rising trend with DBH increase.But the leaf area,specific leaf area and wood density show the declining trend with DBH increase.

关 键 词：热带季节雨林 椆琼楠 种内功能性状 相关分析 

分 类 号：S792.23[农业科学—林木遗传育种]