应用生态学报2024，Vol.35Issue(3)：597-605,9.DOI:10.13287/j.1001-9332.202403.004
秦岭3种优势栎树叶脉性状与生态因子的关系
Relationship between leaf vein traits of three dominant Quercus species and ecological factors in the Qinling Mountains,China
摘要
Abstract
We investigated the inter-and intra-species differences of leaf vein traits of three dominant Quercus spe-cies,Q.wutaishanica,Q.aliena var.acutiserrata,and Q.variabilis of Niubeiling(subtropical humid climate)and Taohuagou(warm temperate semi-humid climate),located in the eastern and western Qinling Mountains.The nine examined leaf vein traits included primary leaf vein width,secondary leaf vein width,mean fine vein width,primary vein density,fine vein density,vein areole diameter,areole density,3D fine vein surface area,and fine vein vol-ume.We further elucidated the influencing mechanisms and regulatory pathways of biotic and abiotic factors on leaf vein traits.The results showed that species identity had significant effects on eight out of nine leaf vein traits except 3D fine vein surface area,while habitat had significant effects on primary leaf vein width,secondary leaf vein width,vein areole diameter,fine vein density,and areole density.Altitude had significant effects on primary vein density,mean fine vein width,vein areole diameter,fine vein density and areole density.Habitat,tree species identity,and altitude had significantly interactive effects on primary leaf vein density,3D fine vein surface area,and fine vein volume.There were significant differences in primary leaf vein width,mean fine vein width,areole density,3D fine vein surface area,fine vein volume,primary vein density of Q.wutaishanica between the two stud-ied habitats,but the differences were only found in secondary leaf vein width and areole density of Q.aliena var.acutiserrata and Q.variabilis.The examined leaf vein traits were influenced both by biotic and abiotic factors,with varying effect sizes.Among the biotic factors,petiole length,leaf length and width ratio had strong effect on leaf vein traits.Among the abiotic factors,climatic and soil factors had high effect size on vein traits,with the former being higher than the latter.Leaf vein traits were affected directly by biotic factors,but indirectly by abiotic factors(soil and climatic factors)via regulating biotic factors(leaf stoichiometry and leaf phenotypic traits).关键词
叶脉性状/生物因子/非生物因子/生境/栎树Key words
leaf vein trait/biotic factor/abiotic factor/habitat/Quercus引用本文复制引用
孙婧依,黄睿智,王奇,赵倚霈,杨绍微,程向芬,刘建锋..秦岭3种优势栎树叶脉性状与生态因子的关系[J].应用生态学报,2024,35(3):597-605,9.基金项目
本文由国家自然科学基金项目(42071065)和中央级公益性科研院所基本科研业务费专项重点项目(CAFYBB2022ZA001)资助. （42071065）
