青冈叶功能性状和生态化学计量学特征对不同干扰强度的响应  

Response of leaf functional traits and eco-stoichiometric traits of Quercus glauca to different disturbance intensities

作　　者：杨洁 戴小华[1,2] YANG Jie;DAI Xiaohua(Leafminer Group,School of Life Sciences,Gannan Normal University,Ganzhou 341000,China;National Navel Orange Engineering Research Center,Ganzhou 341000,China)

机构地区：[1]赣南师范大学生命科学学院潜叶昆虫研究组,赣州341000 [2]国家脐橙工程技术研究中心,赣州341000

出　　处：《生态科学》2024年第6期129-136,共8页Ecological Science

基　　金：国家自然科学基金面上项目(41971059,32260282;);江西省自然科学基金重点项目(20232ACB205005)。

摘　　要：研究不同干扰强度下植物叶的功能响应,能帮助我们理解植物与环境关系,进一步明确植物在变化的环境下所采取的生存策略。以江西省赣州市赣县区三个不同干扰强度生境的青冈为研究对象,分析其叶功能性状及生态化学计量随干扰强度的变化特征。结果显示:(1)干扰强度最大的万象山,叶厚度、叶面积、形状系数、含水率最大,叶干物质含量和叶指数最小;(2)中度干扰的宝莲山叶氮含量、磷含量最大,碳含量、C:N、C:P最小;(3)不同干扰强度下青冈叶的许多功能性状特征、各化学计量指标之间具备显著的相关性。总体而言,高干扰条件下青冈叶更适应强光偏高温干旱的环境,中度干扰使青冈叶具备高生产力的特征。The studies on the functional response of plant leaves to different disturbance intensities can help us understand the relationship between plants and their environment,and further explore the survival strategies adopted by plants under changing environments.In this study,the leaf functional traits and leaf ecological stoichiometry of Quercus glauca growing under three different disturbance intensities(Wanxiangshan,Baolianshan,and Tianzifeng)at the Ganxian District of Ganzhou City were analyzed.The results are as follows.(1)At Wanxiangshan with the highest disturbance intensity,Q.glauca had the largest values of leaf thickness,leaf area,shape coefficient,and water content but the lowest values of leaf dry matter content and leaf index.(2)At Baolianshan with intermediate disturbance intensity,Q.glauca had the largest values of leaf nitrogen content and leaf phosphorus content but the lowest values of leaf carbon content,C:N,and C:P.(3)There were significant correlations between many leaf functional traits and between leaf stoichiometric indices of Q.glauca under different disturbance levels.In general,the leaves of Q.glauca under high disturbance level were more adaptable to the environment of strong light,high temperature,and drought,while the leaves of Q.glauca under moderate disturbance had the features of high productivity.

关 键 词：干扰 青冈 叶片 功能性状 生态化学计量学 

分 类 号：Q14[生物学—生态学] S718[生物学—普通生物学]