桢楠叶片中C∶N∶P化学计量比的季节变化  

Seasonal variations of leaf C ∶ N ∶ P stoichiometry of Phoebe zhennan

作　　者：李栎[1,2] 王光军[1,2,3] 周国新[1,2] 杜昕[1,2] 何丹[1,2] 

机构地区：[1]中南林业科技大学,湖南长沙410004 [2]南方林业生态应用技术国家工程实验室,湖南长沙410004 [3]湖南会同杉木林国家重点野外科学观测研究站,湖南会同418307

出　　处：《湖南林业科技》2015年第1期34-36,共3页Hunan Forestry Science & Technology

基　　金：湖南省研究生科研创新课题项目(CX2013B355);中南林业科技大学研究生科研创新基金项目(CX2013B23)

摘　　要：以会同县桢楠人工幼林为研究对象,对桢楠叶片有机C、全N、全P含量及其化学计量季节动态特征进行研究。结果表明:不同季节的桢楠叶片养分含量及其化学计量特征均有明显不同;叶片有机C的变幅较大,全N和全P的含量变幅较小;4月叶片的有机C含量最高,7月全N和全P的含量均为最高。不同季节的叶片C、N、P化学计量特征具有显著性差异,大致表现为春季与夏、秋、冬季的差异均显著。With Phoebe zhennan plantation of Huitong as study object, the leaf organic C, total N, total P content of Phoebe zhennan and its stoichiometry seasonal variations were studied. The results indicated that there were obvious differ- ences in nutrient contents of leaf of Phoebe zhennan and their stoiehiometry in different season. The C had larger variabili- ty, while the N and P had smaller variability in leaf. C content in leaf of Phoebe zhennan＇was high in April, and the N and P content were high in July. The C, N and P stoichiometry had significant difference in different seasons, roughly as follows spring was significant difference with summer, autumn and winter.

关 键 词：桢楠人工幼林 化学计量特征 季节变化 

分 类 号：Q946[生物学—植物学]