IB-CAS  > 系统与进化植物学国家重点实验室
Reduced stomatal frequency with rising elevation for Kobresia royleana on the Tibetan Plateau
Zhang, Lin1; Zhang, Shuren2; Li, Qijia3; Quan, Cheng3
2020
Source PublicationGLOBAL ECOLOGY AND CONSERVATION
Volume24
AbstractKnowledge about within-species variation in stomatal frequency with varying elevation at very high elevations is rare, which is crucial for us to understand how alpine plants are adapted to the extreme environment. Here, we focus on the variation in stomatal frequency in Kobresia royleana (Nees) Boeckeler (Cyperaceae, Cyperales) along two altitudinal transects (elevation ranges from 3723 m to 5081 m) in the center of the Tibetan Plateau. The result shows the stomatal density (SD) varied from 303 +/- 55.6 mm(-2) to 542 +/- 81.8 mm(-2), and stomatal index (SI) ranged from 21.0% to 29.6%. In contrast with most cases, an unexpected negative response of stomatal frequency to rising elevation was observed. Among abiotic factors, the growing season mean temperature and CO2 partial pressure significantly declined with increasing elevation, while the growing season precipitation did not vary. Therefore, the decreasing SD and SI were mainly due to the declining temperature rather than the decreasing CO2 partial pressure. Further, SD and SI were negatively related to leaf functional traits of specific leaf area (SLA), leaf nitrogen concentration (N) and stable carbon isotope ratios (delta C-13), and all these morphological and physiological traits tended to covary with rising elevation and declining temperature. Meanwhile, the increasing delta C-13, N and SLA with elevation seem to be strategies for alpine plants to cope with the low-temperature environments. Therefore, the observed covariance between stomatal frequency and leaf functional traits also suggests that the low temperature rather than low CO2 partial pressure mainly leads to the elevational pattern of stomatal frequency for this alpine species. (C) 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.
KeywordC-3 sedge Stomatal density Low temperature Specific leaf area Leaf carbon discrimination
Subject AreaBiodiversity Conservation ; Ecology
DOI10.1016/j.gecco.2020.e01326
Indexed BySCI
Language英语
WOS KeywordCARBON-ISOTOPE DISCRIMINATION ; WATER-USE EFFICIENCY ; UV-B RADIATION ; LEAF MORPHOLOGY ; ALTITUDINAL VARIATION ; CLIMATE-CHANGE ; FOSSIL LEAVES ; DENSITY ; CO2 ; TRAITS
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS IDWOS:000608479300016
PublisherELSEVIER
SubtypeArticle
Publication PlaceAMSTERDAM
EISSN2351-9894
Funding OrganizationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41820104002, 41772009, 42002022] ; S&T Basic Work of Sciences and Technology [2015FY11030001-5] ; Fundamental Research Funds for the Central Universities, CHD [300102270301]
Corresponding Author Emailqjli@chd.edu.cn
OAgold
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ibcas.ac.cn/handle/2S10CLM1/21472
Collection系统与进化植物学国家重点实验室
Affiliation1.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Inst Tibetan Plateau Res, CAS Key Lab Alpine Ecol, Beijing 100101, Peoples R China
3.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
4.Changan Univ, Sch Earth Sci & Resources, Xian 710054, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Lin,Zhang, Shuren,Li, Qijia,et al. Reduced stomatal frequency with rising elevation for Kobresia royleana on the Tibetan Plateau[J]. GLOBAL ECOLOGY AND CONSERVATION,2020,24.
APA Zhang, Lin,Zhang, Shuren,Li, Qijia,&Quan, Cheng.(2020).Reduced stomatal frequency with rising elevation for Kobresia royleana on the Tibetan Plateau.GLOBAL ECOLOGY AND CONSERVATION,24.
MLA Zhang, Lin,et al."Reduced stomatal frequency with rising elevation for Kobresia royleana on the Tibetan Plateau".GLOBAL ECOLOGY AND CONSERVATION 24(2020).
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