IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Seasonal variations in leaf delta C-13 and nitrogen associated with foliage turnover and carbon gain for a wet subalpine fir forest in the Gongga Mountains, eastern Tibetan Plateau
Luo, Tianxiang1; Li, Mingcai1; Luo, Ji2
Corresponding AuthorLuo, TX
2011
Source PublicationECOLOGICAL RESEARCH
ISSN0912-3814
EISSN1440-1703
Volume26Issue:2Pages:253-263
SubtypeArticle
AbstractIt is still unclear to what extent variations in foliar delta C-13 and nitrogen can be used to detect seasonal changes in canopy productivity. We hypothesize that in a wet and cloudy fir forest, seasonally higher litterfall and lower leaf area index (LAI) are correlated with higher mass-based leaf nitrogen (N (mass)) and net primary productivity (NPP), while foliar delta C-13 may change with specific leaf area (SLA), area-based leaf nitrogen (N (area)), and/or starch concentration. In order to test our hypotheses, stand-level litterfall and the means of delta C-13, N (mass), N (area), SLA, and starch concentration of canopy needles for a wet and cloudy Abies fabri forest in the Gongga Mountains were monthly measured during the growing season. Seasonal estimates of LAI were obtained from our previous work. A conceptual model was used to predict seasonal NPP of the fir forest. Seasonal mean delta C-13 and N (mass) and climatic variables were used as inputs. The delta C-13 across 1-7-year-old needles increased from May to September associated with decreasing SLA and increasing N (area). There were no significant differences in seasonal starch concentration. With increasing litterfall and decreasing LAI, seasonal mean N (mass) increased, while the delta C-13 varied little. The simulated NPP increased with increasing litterfall and related traits of N (mass) and N (area). Our data generally supported the hypotheses. The results also suggest that in the forest with relatively moist and cloudy environment, the largest fraction of annual carbon gain may occur in the early part of the growing season when higher litterfall results in higher N (mass) of canopy leaves.
KeywordDelta C-13 Leaf Area Index Leaf Nitrogen Litterfall Net Primary Productivity Seasonality Specific Leaf Area
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11284-010-0779-y
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordWATER-USE EFFICIENCY ; NET PRIMARY PRODUCTIVITY ; FAGUS-SYLVATICA L. ; ISOTOPE DISCRIMINATION ; STOMATAL CONDUCTANCE ; ORGANIC-MATTER ; GAS-EXCHANGE ; TREE-RINGS ; AREA INDEX ; ECOSYSTEM
Language英语
Quartile4区
WOS SubjectEcology
WOS IDWOS:000288552900003
Funding OrganizationNational Key Projects for Basic Research of China(2010CB951301) ; National Natural Science Foundation of China(40701008 ; 40671069)
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5515
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, TEL Lab, Beijing 100085, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Luo, Tianxiang,Li, Mingcai,Luo, Ji. Seasonal variations in leaf delta C-13 and nitrogen associated with foliage turnover and carbon gain for a wet subalpine fir forest in the Gongga Mountains, eastern Tibetan Plateau[J]. ECOLOGICAL RESEARCH,2011,26(2):253-263.
APA Luo, Tianxiang,Li, Mingcai,&Luo, Ji.(2011).Seasonal variations in leaf delta C-13 and nitrogen associated with foliage turnover and carbon gain for a wet subalpine fir forest in the Gongga Mountains, eastern Tibetan Plateau.ECOLOGICAL RESEARCH,26(2),253-263.
MLA Luo, Tianxiang,et al."Seasonal variations in leaf delta C-13 and nitrogen associated with foliage turnover and carbon gain for a wet subalpine fir forest in the Gongga Mountains, eastern Tibetan Plateau".ECOLOGICAL RESEARCH 26.2(2011):253-263.
Files in This Item:
File Name/Size DocType Version Access License
Seasonal variations (516KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Luo, Tianxiang]'s Articles
[Li, Mingcai]'s Articles
[Luo, Ji]'s Articles
Baidu academic
Similar articles in Baidu academic
[Luo, Tianxiang]'s Articles
[Li, Mingcai]'s Articles
[Luo, Ji]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Luo, Tianxiang]'s Articles
[Li, Mingcai]'s Articles
[Luo, Ji]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Seasonal variations in leaf δ13C and nitrogen associated with foliage turnover and carbon gain for.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.