IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Responses in leaf functional traits and resource allocation of a dominant alpine sedge (Kobresia pygmaea) to climate warming in the Qinghai-Tibetan Plateau permafrost region
Yang, Yan1,3; Wang, Genxu1; Klanderud, Kari2,4; Yang, Liudong1
Corresponding AuthorWang, GX
2011
Source PublicationPLANT AND SOIL
ISSN0032-079X
Volume349Issue:1-2Pages:377-387
SubtypeArticle
AbstractAssessing the influence of warming on leaf traits, carbon, and nutrient concentrations above and below ground to understand how the dominant sedge Kobresia pygmaea (C. B. Clarke) C. B. Clarke may respond and adapt to extant and future climate in the alpine meadow of the Qinghai-Tibetan Plateau. A warming experiment was conducted in the permafrost region of the Qinghai-Tibetan Plateau from 2008 to 2009. Two 2-year warming treatments (T1, annual warming of 2.1A degrees C; T2, annual warming of 4.4A degrees C) were used, and responses of leaf traits and above- and belowground carbon, nitrogen, and phosphorus concentrations of K. pygmaea were examined. The results show that both moderate (T1) and more extensive (T2) warming decreased leaf mass, leaf thickness, and vascular bundle size, and increased the mass-based photosynthetic rate (A(mass)) and photosynthetic nitrogen use efficiency (PNUE). A moderate warming significantly decreased leaf carbon (C), nitrogen (N), and phosphorus (P), and root C and N concentrations of K. pygmaea. These decreases were even more pronounced under the more extensive warming. The decreases in leaf N and P were significantly larger than the decrease in leaf C concentration. Root P concentration increased more under the extensive than the moderate warming. The observed increase in leaf C:N ratio in the warming treatment indicates that enhanced temperature may increase the long-term nitrogen use efficiency of K. pygmaea leaves. This again suggests that K. pygmaea might adapt well to future climate warming, and that nitrogen might be a more important factor for K. pygmaea dominated alpine meadows under future climate warming.
KeywordAlpine Meadow Leaf Mass (Lma) Nitrogen Open Top Chamber
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11104-011-0891-y
WOS Subject ExtendedAgriculture ; Plant Sciences
Indexed BySCI
WOS KeywordLARGE-SCALE PATTERNS ; PLANT COMMUNITY ; NITROGEN ; TEMPERATURE ; CARBON ; METAANALYSIS ; GENERALITY ; DENSITY ; AREA ; MASS
Language英语
Quartile1区
TOP
WOS SubjectAgronomy ; Plant Sciences ; Soil Science
WOS IDWOS:000297738400028
Funding OrganizationNational Science Foundation of China(40925002) ; National Basic Research Program of China (973)(2007CB411504) ; Alpine Ecosystem Observation and Experiment Station of Mt. Gongga, Chinese Academy of Sciences
Citation statistics
Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5471
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Environm Evolvement & Regulat, Inst Mt Hazards & Environm, Chengdu, Peoples R China
2.Univ Bergen, Dept Biol, N-5020 Bergen, Norway
3.Peking Univ, Dept Ecol, Coll Urban Environm Sci, Beijing 1000871, Peoples R China
4.Norwegian Univ Life Sci, Dept Ecol & Nat Resource Management, N-1432 As, Norway
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Yang, Yan,Wang, Genxu,Klanderud, Kari,et al. Responses in leaf functional traits and resource allocation of a dominant alpine sedge (Kobresia pygmaea) to climate warming in the Qinghai-Tibetan Plateau permafrost region[J]. PLANT AND SOIL,2011,349(1-2):377-387.
APA Yang, Yan,Wang, Genxu,Klanderud, Kari,&Yang, Liudong.(2011).Responses in leaf functional traits and resource allocation of a dominant alpine sedge (Kobresia pygmaea) to climate warming in the Qinghai-Tibetan Plateau permafrost region.PLANT AND SOIL,349(1-2),377-387.
MLA Yang, Yan,et al."Responses in leaf functional traits and resource allocation of a dominant alpine sedge (Kobresia pygmaea) to climate warming in the Qinghai-Tibetan Plateau permafrost region".PLANT AND SOIL 349.1-2(2011):377-387.
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