郭志文;赵文霞;罗久富;郑景明;

• 1:北京林业大学林学院

摘要(Abstract)：

以大岗山亚热带常绿阔叶林的16种木本植物(11种常绿,5种落叶)为研究对象,探讨叶面积、比根长、木质部密度、叶氮含量等15个功能性状在种间和种内的变异特征.研究结果表明:不同功能性状的变异程度存在很大差异,比叶面积、比根长及各构件的N、P含量的变异较大(24. 38%～55. 60%),其次是各构件的组织密度(23. 00%～28. 80%),各构件的C含量变异程度最低(9. 29%～11. 00%);不同功能性状的变异来源存在很大差异,结构性状变异主要来源于个体水平(高于50%),而化学性状的变异主要来源于物种水平(高于50%),植物各构件的C含量种间变异高于70%,只有比叶面积、叶N和P含量在生活型水平上有较大变异(29. 94%、14. 74%、63. 09%).植物功能性状的种内变异是普遍存在的,但不同功能性状的种内变异程度存在差异.

关键词(KeyWords)： 木本植物;功能性状;生活型;种间变异;种内变异

Abstract:

Keywords:

基金项目(Foundation): 国家林业局林业公益性行业科研专项(201404303)

作者(Authors): 郭志文;赵文霞;罗久富;郑景明;

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