中国农业科技导报2024，Vol.26Issue(3)：48-56,9.DOI:10.13304/j.nykjdb.2023.0438
不同树龄国槐叶片性状特征及其适应策略研究
Study on Leaf Traits and Adaptation Strategies of Sophora japonica at Different Ages
摘要
Abstract
The variation and correlation of leaf traits can reflect the resource utilization and adaptive survival strategies of plants.In order to explore the traits and variation rules of the leaves of Sophora japonica of different ages,taking the leaves of Sophora japonica of different ages in Liaocheng city as the research object,13 indicators including the leaf area(LA),leaf fresh weight(FW),leaf dry weight(DW),leaf length(LL),leaf width(LW),petiole length(PL),leaf thickness(LT),rachis length(RL),leaf shape index(LI),specific leaf area(SLA),leaf dry matter content(LDMC),leaf tissue density(LTD),and specific leaf weight(SLW)were measured,and one-way analysis of variance and coefficient variation analysis were used to explore the characteristics of leaf traits at different tree ages.Principal component analysis and correlation analysis were used to study the adaptation rules of Sophora japonica leaves at different tree ages.The results showed that the DW,LL and PL of reserve resources were significantly higher than those of other tree ages(P＜0.01).The total coefficient variations of 13 leaf traits of Sophora japonica were from 8.57％to 81.48％;among leaf traits of different tree ages,the coefficient variation of the reserve resource LTD was the largest which was 92.86％,and the coefficient variation of the secondary ancient tree LDMC was the smallest which was 5.84％.LA,FW,DW,LL and LW were extremely significantly positively correlated with each other(P＜0.01);SLA was significantly negatively correlated with FW,DW,LTD and SLW(P＜0.01),and positively correlated with LT(P＜0.01);LDMC was significantly positively correlated with FW,DW,LTD and SLW(P＜0.01).The leaf traits of reserve resources had the characteristics of high LDMC and SLW,low SLA,and belong to the survival strategy of"quick investment-income type";the secondary ancient trees and the first grade ancient trees showed high SLA,low LDMC and SLW leaf character combinations,and adopted a"slow investment-benefit"and"conservative"strategy.Above results provided a scientific basis for the formulation of maintenance and management strategies for different age classes of Sophora japonica.关键词
叶片性状/变异系数/古树/适应策略/叶经济谱Key words
leaf traits/coefficient variation/ancient trees/adaptation strategy/leaf economic spectrum分类
农业科技引用本文复制引用
褚蓉蓉,冯国庆,张中一,刘慧娇,董家鑫,文章镇,高祥斌,解孝满,刘丹..不同树龄国槐叶片性状特征及其适应策略研究[J].中国农业科技导报,2024,26(3):48-56,9.基金项目
山东省重点研发计划项目(2019GNC21410) （2019GNC21410）
聊城大学大学生创新训练计划项目(CXCY2022410) （CXCY2022410）
聊城大学风景园林学科建设基金项目(319462212) （319462212）
古树复壮效果评价指标体系研究项目(2022GSGHZ037). （2022GSGHZ037）
