重庆地区几种常见单叶与复叶树种叶内生物量分配及异速生长分析  

Analysis of leaf biomass allocation and allometric growth of several common single-leaf and compound-leaf tree species in the Chongqing area

作　　者：李金明 叶玉媛 刘锦春 Li Jin-Ming;Ye Yu-Yuan;Liu Jin-Chun(School of Life Sciences, Southwest University,Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, Chongqing 400715, China)

机构地区：[1]西南大学生命科学学院,三峡库区生态环境教育部重点实验室,重庆市三峡库区植物生态与资源重点实验室,重庆400715

出　　处：《植物科学学报》2021年第1期76-84,共9页Plant Science Journal

基　　金：中央高校基本科研业务费专项(XDJK2020B037);国家自然科学基金项目(31500399)。

摘　　要：以6种复叶和7种单叶树种为材料,对叶内光合结构和支撑结构的生物量分配及异速生长关系在单叶和复叶树种中的变化规律进行研究。结果显示:单叶树种支撑结构的生物量投资比例显著大于复叶。单叶树种的支撑结构质量比与叶大小(叶面积和总叶干重)无明显的相关性,其光合结构与支撑结构呈等速生长关系;复叶树种的支撑结构质量比随叶大小的增加而增加,其光合结构与支撑结构呈显著的异速生长关系,且支撑结构的增长速率大于光合结构的增长速率。在物种水平上,同一叶类型植物不同物种的叶内支撑结构质量比和叶大小的关系呈不同的变化趋势。In this study,six compound-leaf and seven single-leaf tree species were used as research materials.We explored the variations in biomass investment ratios between the photosynthetic and support structures in the leaves as well as the allometric growth relationship between the single-leaf and compound-leaf tree species.Results showed that the biomass investment ratio of the support structure of the single-leaf tree species was significantly greater than that of the compound-leaf tree species.No significant correlation was found between the support structure mass ratio of single-leaf tree species and leaf size(represented by leaf area and total leaf dry weight),and their photosynthetic and support structures showed an isometric growth relationship.However,the support structure mass ratio of the compound-leaf tree species increased with the increase in leaf size,and their photosynthetic and support structures showed a significant allometric growth relationship.Furthermore,the growth rate of the support structure was greater than that of the photosynthetic structure.In addition,at the species level,the relationship between the mass ratio of the support structure and leaf size in different species of the same leaf type showed different variation trends.

关 键 词：叶型 光合结构 支撑结构 生物量分配 异速生长 

分 类 号：Q945.3[生物学—植物学]