生态学杂志2025，Vol.44Issue(3)：713-719,7.DOI:10.13292/j.1000-4890.202503.022
低海拔移植对六种杜鹃花幼树叶片功能性状的影响
Effect of low-altitude transplantation on functional traits of saplings of six Rhododendron species
摘要
Abstract
Leaf functional traits have been widely used to characterize plant responses and adaptations to environ-mental changes.Rhododendron spp.are important horticultural and ecologically valuable species,the heat sensitivi-ty of which limits their survival in low-altitude areas.However,few studies have examined the response of Rhodo-dendron to climate warming based on functional traits.In this study,we compared the differences in leaf morphology[leaf mass(LM),leaf area(LA),leaf thickness(LT),specific leaf area(SLA)],leaf dry matter content(LDMC),nutrients[leaf nitrogen(N),phosphorus(P),nitrogen-phosphorus ratio(N/P)]and net photosyn-thetic rate(Pn)of saplings of six Rhododendron species at two altitudes in Dujiangyan area of Sichuan Province.The results showed that:(1)There were significant differences in leaf morphology(except SLA),nutrient concen-trations(except leaf P),and Pn among the six Rhododendron species at high altitude(1800 m),but no significant difference in LMDC and Pn between species after transplantation at low altitude(550 m).(2)In general,low-alti-tude transplantation significantly increased SLA,Pn,N and P,and decreased LM,LA,LT and LDMC.The re-sponse magnitudes of these traits were different among different species.(3)For the trait correlations,Pn was sig-nificantly positively correlated with SLA,N content and N/P in high-altitude habitats,but not significantly after low-altitude transplantation.These results implied inconsistent sensitivity of different Rhododendron species to tem-perature increases.Our results can provide a scientific basis for understanding the responses and adaptation of Rho-dodendron species in the context of global warming.关键词
气候变暖/叶片功能性状/海拔/比叶面积Key words
climate warming/leaf functional trait/elevation/specific leaf area引用本文复制引用
张永强,李明喜,曾文汐,王飞,余海清,张超,邵慧敏,马文宝,董廷发..低海拔移植对六种杜鹃花幼树叶片功能性状的影响[J].生态学杂志,2025,44(3):713-719,7.基金项目
四川省自然科学基金项目(2022NSFSC0094)、四川省创新团队岗位项目(LCTD2023CZ01-6)、四川省濒危野生动物保护生物学重点实验室开放课题(2021KCPB-02)和甘孜州科技计划项目(220013)资助. （2022NSFSC0094）
