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Reduced stomatal frequency with rising elevation for Kobresia royleana on the Tibetan Plateau
Zhang, Lin1; Zhang, Shuren2; Li, Qijia3; Quan, Cheng3
2020
发表期刊GLOBAL ECOLOGY AND CONSERVATION
卷号24
摘要Knowledge 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.
关键词C-3 sedge Stomatal density Low temperature Specific leaf area Leaf carbon discrimination
学科领域Biodiversity Conservation ; Ecology
DOI10.1016/j.gecco.2020.e01326
收录类别SCI
语种英语
WOS关键词CARBON-ISOTOPE DISCRIMINATION ; WATER-USE EFFICIENCY ; UV-B RADIATION ; LEAF MORPHOLOGY ; ALTITUDINAL VARIATION ; CLIMATE-CHANGE ; FOSSIL LEAVES ; DENSITY ; CO2 ; TRAITS
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS记录号WOS:000608479300016
出版者ELSEVIER
文献子类Article
出版地AMSTERDAM
EISSN2351-9894
资助机构National 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]
作者邮箱qjli@chd.edu.cn
作品OA属性gold
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/21472
专题系统与进化植物学国家重点实验室
作者单位1.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
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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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