[1]李 丽,胡 君,于倩楠,等.横断山区高山栎组灌木型植物C、N、P生态化学计量特征[J].山地学报,2018,(06):878-888.[doi:10.16089/j.cnki.1008-2786.000383]
 LI Li,HU Jun,YU Qiannan,et al.Stoichiometric Characteristics of Carbon, Nitrogen and Phosphorus in Quercus Sect. Heterobalanus Shrubs in the Hengduan Mountain, China[J].Mountain Research,2018,(06):878-888.[doi:10.16089/j.cnki.1008-2786.000383]
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横断山区高山栎组灌木型植物C、N、P生态化学计量特征()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2018年06期
页码:
878-888
栏目:
山地环境
出版日期:
2018-11-30

文章信息/Info

Title:
Stoichiometric Characteristics of Carbon, Nitrogen and Phosphorus in Quercus Sect. Heterobalanus Shrubs in the Hengduan Mountain, China
文章编号:
1008-2786-(2018)6-878-11
作者:
李 丽1胡 君1于倩楠123阳小成4李 婷1刘 庆1*
1.中国科学院 成都生物研究所,成都 610041; 2.西南交通大学 地球科学与环境工程学院,成都 611756; 3.四川省环境工程评估中心,成都610041; 4.成都理工大学 材料与化学化工学院,成都 610059
Author(s):
LI Li1 HU Jun1 YU Qiannan123 YANG Xiaochen4 LI Tin1 LIU Qing1*
1.Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041,China; 2. Faculty of Geosciences & Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China; 3.Sichuan Environment & Engineering Appraisal Center, Chengdu 610041, China; 4.College of Material and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China
关键词:
生态化学计量特征 高山栎组 灌木型 植物器官 横断山区
Keywords:
ecological stoichiometry Heterobalanus shrub plant organs Hengduan Mountain
分类号:
Q948.1
DOI:
10.16089/j.cnki.1008-2786.000383
文献标志码:
A
摘要:
为了解横断山区高山栎组[Quercus sect Heterobalanus(Oerst.)Menits.]灌木型植物不同器官碳(C)、氮(N)、磷(P)生态化学计量特征及分布格局,该文采用随机抽样方法布设18个高山栎组植物灌丛样地,采集高山栎组植物的根、茎、叶、枝器官样品,分析样品C、N、P含量。结果表明:(1)高山栎组植物C、N、P在各器官中分别表现为叶(477.88 g·kg-1)>枝(469.29 g·kg-1)>茎(445.26 g·kg-1)>根(431.42 g·kg-1),叶(13.83 g·kg-1)>茎(6.08 g·kg-1)>枝(5.82 g·kg-1)>根(4.70 g·kg-1),叶(1.26 g·kg-1)>枝(1.21 g·kg-1)>根(1.16 g·kg-1)>茎(0.71 g·kg-1),分配到叶中的营养元素相对较多;(2)各器官中C含量较N、P含量相对稳定,其中变异系数最大值发生在根部;(3)各器官C:N范围为36.50~105.33,最大值在根中,最小值在叶中,C:P范围为418.15~768.36,最大值在茎中,最小值在枝中,N:P范围为4.89~11.69,最大值在叶中,最小值在枝中;(4)各器官C与N、P间均呈负相关关系,N与P间均呈正相关关系,但相关关系是否显著在不同器官中不同;(5)各器官C、N、P含量受海拔的影响较小,仅叶片C含量、枝P含量与海拔间存在弱负相关关系。由此可见,高山栎组灌木型植物各器官营养元素的含量与其生长期及相应器官的功能结构密切相关。
Abstract:
Few studies have been performed on the stoichiometry of carbon, nitrogen and phosphorus(C, N and P)in plateau shrublands across China. Heterobalanus is a typical shrub species representative of the Hengduan Mountain Region. Thus, exploring the carbon, nitrogen and phosphorus distribution patterns in its various organs could help us understand both the mechanisms of C, N and P cycling and nutrient balance in the Heterobalanus-dominated shrub ecosystem. A stratified random sample of seventeen sampling sites was selected in the Hengduan Mountain Region, and then 101 biological samples of Heterobalanus plant organs were collected and measured. The results showed that:(1)The C, N and P concentrations varied in different organs, in the following decreasing orders: leaf(477.88 g·kg-1)> twig(469.29 g·kg-1)> shoot(445.26 g·kg-1)> root(431.42 g·kg-1); leaf(13.83 g·kg-1)> shoot(6.08 g·kg-1)> twig(5.82 g·kg-1)> root(4.70 g·kg-1); leaf(1.26 g·kg-1)> twig(1.21 g·kg-1)> root(1.16 g·kg-1)> shoot(0.71 g·kg-1), respectively.(2)The C concentration was relatively higher and more stable than the N and P concentrations, and the maximum coefficient of variation for C, N and P were all observed at the root.(3)The N: P ratio varied in different organs from 4.89-11.69, with the minimum found in the twig organ and the maximum found in the leaf.(4)The correlation analysis results indicated that the C concentration was negatively correlated with N and P concentrations, while the N concentration correlated positively with the P concentration. However, the magnitude of correlation differed significantly in the different organs.(5)In all organs, the C, N and P concentrations were hardly affected by altitude, but only the C concentration of the leaf and the P concentration of the twig increased with latitude. These results indicate that the C, N and P stoichiometric characteristics in Heterobalanus shrubs are somewhat related to homeostasis, and the distributions of C, N and P are closely related to both the growth period and the function of the organ.

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备注/Memo

备注/Memo:
收稿日期(Received date):2018-03-12; 改回日期(Accepted date): 2018-11-01
基金项目(Foundation item):中国科学院战略性先导科技专项(XDA05050303); 科技部科技基础性工作专项(2015FY210200,2015FY110300)。 [Strategic Priority Research Program of Chinese Academy of Sciences(XDA05050303); Science and Technology Basic Work Project of the Ministry of Science and Technology of China(2015FY210200,2015FY110300)]
作者简介(Biography):李丽(1994-),女,贵州贵阳人,博士研究生,从事植被生态学研究。[ LI Li(1994-),female, born in Guiyang, Guizhou province, Ph. D. candidate, research on vegetation ecology] E-mail: lili@cib.ac.cn
*通讯作者(Corresponding author):刘庆,男,博士,研究员,从事森林生态与全球变化、灌丛生态和恢复生态学研究 [LIU Qing, male, Ph. D.,professor, research on forest ecology and global change, shrub ecology and restoration ecology] E-mail: liuqing@cib.ac.cn
更新日期/Last Update: 2018-11-30