应用生态学报2018，Vol.29Issue(2)：449-458,10.DOI:10.13287/j.1001-9332.201802.008
不同种源刨花楠林下幼苗叶功能性状与地理环境的关系
Relationships between leaf functional traits of Machilus pauhoi understory seedlings from different provenances and geographical environmental factors
摘要
Abstract
To understand the adaptation mechanism of Machilus pauhoi seedlings to environmental changes,leaf functional traits of M.pauhoi seedlings from nine provenances,as well as relationships between leaf traits and environmental factors were analyzed.The results showed that leaf functional traits of M.pauhoi seedlings from different provenances showed significant intraspecific variations,with the coefficient of variation ranging from 8.8％ to 28.2％.Specific leaf area,leaf relative water content,leaf tissue density and leaf thickness differed significantly among seedlings from different provenances,implying high leaf morphological plasticity.Moreover,leaf tissue density was positively correlated to leaf dry matter content and leaf relative water content,but negatively correlated to specific leaf area and leaf thickness.Specific leaf area showed significantly negative correlations with leaf dry matter content and leaf area.The covariation among those traits examined here indicated that M.pauhoi seedlings could adjust and balance the combination of leaf traits in response to environmental changes.Longitude,latitude,＞ 10 ℃ annual accumulated temperature and mean annual temperature contributed largely to the variation of leaf functional traits of M.pauhoi seedlings.Leaf thickness decreased with the increase of longitude,while leaf dry matter content and leaf relative water content increased with the increase of longitude.Leaf tissue density was positively correlated with longitude and mean annual temperature,suggesting that longitude rather than mean annual temperature had greater effects on it.Leaf area was positively correlated with ＞ 10 ℃ annual accumulated temperature and longitude,indicating that annual accumulated temperature rather than longitude had greater effects on the variation of leaf area.关键词
叶功能性状/地理环境/冗余分析/逐步线性回归分析/种源Key words
leaf functional trait/geographical environment/redundancy analysis/stepwise linear regression analysis/provenance引用本文复制引用
余华,钟全林,黄云波,程栋梁,裴盼,张中瑞,徐朝斌,郑文婷..不同种源刨花楠林下幼苗叶功能性状与地理环境的关系[J].应用生态学报,2018,29(2):449-458,10.基金项目
本文由国家自然科学基金项目(31170596,31170374,31370589)、国家重点研发计划项目(2017YFC0505400)、福建省种业创新和产业化工程项目(2014S1477-4)、福建省科技厅重大项目(2014N5008)和福建省教育厅教育科研项目(JAT170443)资助 This work was supported by the National Natural Science Foundation of China (31170596,31170374,31370589),the National Key Research and Development Plan (2017YFC0505400),the Seed Industry Innovation Project of Fujian Province (2014S1477-4),the Major S&T Project of Fujian Province (2014N5008),and the Educational and Scientific Research Project of Fujian Provincial Education Department (JAT170443). （31170596,31170374,31370589）
