黄庆阳;谢立红;曹宏杰;杨帆;倪红伟;

• 1:黑龙江省科学院自然与生态研究所
• 2:湿地与生态保育国家地方联合工程实验室
• 3:黑龙江省林业科学院

摘要(Abstract)：

【目的】探讨五大连池火山山杨叶功能性状特征,揭示植物对火山生境的适应,以及对不同坡向的生存策略,为特殊生境和微地形生境下植物的适应机制提供参考依据。【方法】以5座火山共有植物山杨为对象,测定叶面积(LS)、叶厚度(LT)、比叶面积(SLA)、叶干物质量(LDMC)、叶碳含量(LCC)、叶氮含量(LNC)、叶磷含量(LPC)和叶氮磷比(LNP)等8种功能性状在坡向间、火山间的变化规律和变异特征,分析叶功能性状间相互关系和主成分。【结果】(1)除LCC外,其他7种功能性状在南北坡向间均具有显著差异,LT、LDMC、LNC、LNP表现为南坡大于北坡,而LS、LCC、LPC表现为南坡小于北坡。(2)山杨SLA、LCC、LPC在新、老期火山间差异显著,但在老期火山间差异不显著。(3)火山南坡、北坡山杨LT与LDMC呈显著负相关,南、北坡向及火山间山杨LNP与LNC均呈极显著正相关、与LPC呈极显著的负相关关系。(4)火山环境中山杨LNP、LPC、LNC和LS在叶功能性状分化中起到主要贡献作用。【结论】五大连池火山山杨叶功能性状的变异与火山喷发的特殊性有关,山杨通过调节自身功能性状形成不同的生存策略来适应南、北坡向和不同火山环境,在生长过程中更容易受到氮元素缺乏的限制。火山森林生态系统是一个特殊环境,研究火山植被演替和植物功能性状等问题需要结合火山喷发的特殊情况深入讨论。

关键词(KeyWords)： 五大连池火山;叶功能性状;变异;生存策略

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(31770497);; 黑龙江省科学院基金项目(CXJQ2018ZR03、KY2021ZR03、YY2019ZR01)

作者(Author): 黄庆阳;谢立红;曹宏杰;杨帆;倪红伟;

Email:

DOI:

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