关键词：
植物功能性状;摩天岭北坡;叶性状;木本植物;变异
摘 要：
【目的】以木本植物为研究对象,对植物叶性状的变异特征及其与植物科类群、高度、生活型、繁殖性状、分布区的关系进行研究,揭示摩天岭北坡植物叶性状的种间分异特征及其植物功能性状的变异规律,为植物功能性状的深入研究提供参考依据.【方法】对摩天岭北坡邱家坝保护站(海拔2338～2916 m)木本植物的植物功能性状进行研究,包括比叶面积(SLA)、叶干物质含量(LDMC)、叶氮含量(LNC)、叶碳含量(LCC)、叶磷含量(LPC)的变异特征及其与科类群、植物高度、生活型、花序、花色、果型和分布区的关系.【结果】摩天岭北坡邱家坝山地森林为针阔叶混交林带,共有木本植物37种,其中乔木21种,灌木和竹类16种.1)37种木本植物的SLA平均为14.22 m~2/kg、LDMC平均为0.43 g/g,LNC、LCC、LPC平均为23.69、458.94、36.30 g/kg;变异幅度依次为:SLA(103.45%)>LDMC(61.61%)>LPC(20.76%)>LNC(20.38%)>LCC(4.86%).2)相关分析显示,植物的高度与LCC呈极显著正相关关系(P<0.01),LNC与LPC呈显著正相关关系(P<0.05),LCC与LDMC呈显著负相关关系(P<0.05);方差分析显示,不同科类群的植物间LCC差异极显著(P<0.01),LNC差异显著(P<0.05),科类群能解释SLA、LDMC、LNC、LCC和LPC变异的42.4%、50%、63.3%、74.1%和32.4%;不同高度的植物间LDMC差异显著(P<0.05),LCC差异极显著(P<0.01);不同生活型的植物间LNC和LPC差异极显著(P<0.01);不同花序类型植物之间的LDMC(P<0.01)和LCC(P<0.001)差异极显著.不同花色的植物LNC差异显著(P<0.05).不同果实类型的植物间SLA(P<0.001)和LCC(P<0.01)差异极显著,其间LDMC差异显著(P<0.05).植物的分布区对叶性状无显著影响(P>0.05).【结论】植物功能性状并不是孤立发挥作用的,植物在长期适应环境过程中,其形态和功能性状的特征不仅受环境的影响,也可能受植物生活史和物种系统发育史的影响.
译 名：
Variation characteristics of functional traits of woody plants on the Motianling northern slope in Minshan Mountain
作 者：
HE Jing;TIAN Qing;HE Gui-ping;SONG Ling-ling;CAO Xue-ping;College of Forestry,Gansu Agricultural University;
关键词：
plant functional traits;;Motianling northern slope;;leaf traits;;woody plants;;variation
摘 要：
【Objective】 Taking woody plants as the research object,this paper studies the variation characteristics of plant leaf traits and their relationships with plant family groups,height,life forms,reproductive traits and distribution areas,reveals the interspecific differentiation characteristics of plant leaf traits and the variation rules of plant functional traits on the northern slope of the Motian Mountains,so as to deepen the study of plant functional traits.【Method】 The variation characteristics of functional characteristics of woody plants in Qiujiaba Conservation Station(2 338～2 916 m above sea level) on the Motianling northern slope,including specific leaf area(SLA),leaf dry matter content(LDMC),leaf nitrogen content(LNC),leaf carbon content(LCC),leaf phosphorus content(LPC),and their relationships with family groups,plant height,life form,inflorescence type,flower color,fruit type and distribution area of were studied.【Result】 The forests of Qiujiaba Mountain on the Motianling northern slope are coniferous and broad-leaved mixed forest zone,with 37 species of woody plants,including 21 species of trees,16 species of shrubs and bamboos.The average values of SLA was 14.22 m~2/kg,LDMC was 0.43 g/g,LNC,LCC and LPC of 37 woody plants were 23.69,458.94 and 36.30 g/kg,respectively.The variation ranges were SLA(103.45%) >LDMC(61.61%)>LPC(20.76%)>LNC(20.38%)>LCC(4.86%),respectively.The correlation analysis showed that plant height was positively correlated with LCC(P<0.01),LNC was positively correlated with LPC(P<0.05),and LCC was negatively correlated with LDMC(P<0.05).(3) Analysis of variance showed that there were significant differences in LCC among different families(P<0.01) and LNC(P<0.05).Family groups could explain 42.4%,50%,63.3%,74.1% and 32.4% of the variation of SLA,LDMC,LNC,LCC and LPC.There were significant differences in LDMC between plants of different heights(P<0.05),LCC(P<0.01),and plant LNC and LPC of different life forms(P<0.01).There were significant differences in LDMC(P<0.01) and LCC(P<0.001) among different inflorescence types.There were significant differences in LNC among plants with different flower colors(P<0.05).SLA(P<0.001) and LCC(P<0.01) were significantly different among different fruit types,and LDMC was significantly different among them(P<0.05).【Conclusion】 Plant functional traits do not play an isolated role.In the long-term adaptation process,plant morphology and functional traits are not only affected by the environment,but also by plant life history and phylogenetic history.
