福建海岛桃金娘叶功能性状及其对环境的响应  

Characterization of Leaf Functional Traits of Rhodomyrtus tomentosa and Its Responses to Environmental Factors in Fujian Islands

作　　者：黄阿青 温清燕 钱志军[1] 陈颖[1] 王迎雪 邓传远[1] HUANG Aqing;WEN Qingyan;QIAN Zhijun;CHEN Ying;WANG Yingxue;DENG Chuanyuan(College of Landscape Architecture,Fujian Agriculture and Forestry University,Fuzhou Fujian 350002)

机构地区：[1]福建农林大学风景园林与艺术学院,福建福州350002

出　　处：《山东林业科技》2024年第4期20-26,共7页Journal of Shandong Forestry Science and Technology

基　　金：海洋公益性行业科研专项经费项目(201505009);福建省区域发展科技项目计划(2018Y3006);福建农林大学科技创新专项基金项目(CXZX2019086)。

摘　　要：为研究桃金娘(Rhodomyrtus tomentosa)的叶功能性状及其与环境因子的关系,揭示海岛桃金娘灌丛对环境变化的适应策略。以福建省沿海的东山岛、粗芦岛、目屿岛、西洛岛的桃金娘为对象,通过测定桃金娘9项叶功能性状及17项环境因子,分析了环境因子对桃金娘叶功能性状的影响。结果表明,桃金娘的叶功能性状变异系数介于0.94%~16.93%,其中叶磷含量变异幅度最大(16.93%),叶碳含量变异幅度最小(0.94%),整体上桃金娘叶功能性状相对保持稳定。桃金娘叶功能性状间存在一定的相关性,且各功能性状间关系紧密。冗余分析发现,福建海岛桃金娘的叶功能性状主要受土壤全钾、土壤全氮、风速、年均温等环境因子的影响。研究结果表明,桃金娘的叶片可以通过一定的性状变异和组合来较好地适应海岛恶劣的环境。通过这项研究,可以更好地了解桃金娘对各种海岛环境的反应特征,更好地了解它们的生态策略,这将为保护和合理利用桃金娘野生种质资源以及维护海岛植被提供重要的参考。In order to study the leaf functional traits of Rhodomyrtus tomentosa and their relationships with environmental factors,and to reveal the adaptation strategies of island R.tomentosa scrub to environmental changes.The effects of environmental factors on the leaf functional traits of R.tomentosa were analyzed by measuring 9 leaf functional traits and 17 environmental factors on Dongshan Island,Culu Island,muyu Island,and Xiluo Island along the coast of Fujian Province.The results showed that the coefficients of variation of leaf functional traits of R.tomentosa ranged from 0.94%to 16.93%,with leaf phosphorus content showing the highest variation(16.93%)and leaf carbon content the lowest(0.94%),and the overall leaf functional traits of R.tomentosa remained relatively stable.There were certain correlations among the functional traits of R.tomentosa leaves,and the relationships among the functional traits were close.Redundancy analysis revealed that leaf functional traits of R.tomentosa in Fujian Island were mainly influenced by environmental factors such as soil total potassium,soil nitrogen,wind speed,and mean annual temperature.The results of this study showed that the leaves of myrtle can be adapted better to the harsh environment of the islands through certain trait variations and combinations.The results of the above study can deepen the understanding of the response characteristics of R.tomentosa to different island habitats and its ecological strategies in the islands,and provide important references for the conservation and utilization of R.tomentosa wild germplasm resources as well as the maintenance of island vegetation.

关 键 词：福建海岛 桃金娘 叶功能性状 环境因子 

分 类 号：S793.9[农业科学—林木遗传育种]