植物功能性状系统发育保守性的类群和地理分异研究——以中国被子植物最大株高为例  

Taxonomic and geographic differentiation of phylogenetic conservatism of plant functional traits:a case study of maximum plant height of Chinese angiosperms

作　　者：邢冰冰 李垚[1] 毛岭峰 XING Bingbing;LI Yao;MAO Lingfeng(College of Ecology and Environment,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京林业大学生态与环境学院,江苏南京210037

出　　处：《南京林业大学学报（自然科学版）》2024年第1期59-66,共8页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家自然科学基金项目(31870506)。

摘　　要：【目的】株高是植物生态策略的核心部分。本研究旨在揭示中国被子植物最大株高的系统发育保守性,探明其类群、地理分异规律及与环境因子的关联。【方法】利用中国20295种被子植物的最大株高和地理分布数据,检测不同生长型、不同类群和不同植被区域植物最大株高的系统发育保守性,分析系统发育信号(Pagel’sλ值)与纬度、温度和降水量等因子的关联。【结果】中国被子植物最大株高的系统发育保守性较强(Pagel’sλ=0.893)。其中,草本植物的系统发育保守性程度略低于木本植物,豆目(Fabales)、石竹目(Caryophyllales)、天门冬目(Asparagales)、唇形目(Lamiales)、伞形目(Apiales)、虎耳草目(Saxifragales)等6个目的系统发育信号均高于0.9。所有被子植物与木本植物的系统发育信号与纬度、温度均呈单峰曲线关系,但与降水量呈负相关。草本植物系统发育信号的纬度格局不明显,与温度、降水量均呈多峰曲线关系。【结论】中国被子植物最大株高的系统发育保守性具有明显的地理格局,但趋势因生长型而异。总体来说,中纬度地区被子植物整体及木本植物株高的系统发育保守性强于高、低纬度地区。【Objective】Plant height is a fundamental component of plant ecological strategies.This study aims to elucidate the phylogenetic conservatism of maximum plant height in Chinese angiosperms,investigate its variation across taxonomic groups and geographic regions,and explore its associations with environmental factors.【Method】Using data on the maximum plant height and geographic distribution of 20295 Chinese angiosperm species,this study assessed the phylogenetic conservatism of maximum plant height among different growth forms,taxonomic groups,and vegetation zones.The study analyzed the correlation between the phylogenetic signal(Pagel'sλ)and factors such as latitude,temperature,and precipitation.【Result】The maximum plant height of Chinese angiosperms exhibited a strong phylogenetic conservatism(Pagel'sλ=0.893).Among them,herbaceous plants showed slightly lower phylogenetic conservatism compared to woody plants,while six orders including Fabales exhibited phylogenetic signals higher than 0.9.The phylogenetic signals of all plants and woody plants displayed a unimodal relationship with latitude and temperature but showed a negative correlation with precipitation.The latitudinal pattern of phylogenetic signals in herbaceous plants was less pronounced,instead showing a multi-peak relationship with temperature and precipitation.【Conclusion】The maximum plant height of Chinese angiosperms demonstrated a clear geographic pattern in terms of phylogenetic conservatism,but the trend varied among different growth forms.Overall,the phylogenetic conservatism of maximum plant height of angiosperms and woody plants was stronger in middle latitudes compared to both high and low latitudes.

关 键 词：被子植物 功能性状 系统发育信号 系统发育保守性 最大株高 中国 

分 类 号：S718.5[农业科学—林学]