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Altitudinal variation in leaf construction cost and energy content of Bergenia purpurascens
Zhang, Lin1; Luo, Tianxiang1; Liu, Xinsheng1; Wang, Yun2
2012-08-01
发表期刊ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
ISSN1146-609X
卷号43期号:1页码:72-79
摘要It is still unknown if the variation of leaf energy content across altitudinal gradients is caused by varying climatic factors or species replacement. We test whether there is an altitudinal increase in leaf energy properties within a single species, which is mainly due to the decreasing air temperature with altitude. We collected samples for Bergenia purpurascens Engl. (an evergreen herb) at every 10 m in altitude from outside the timberline forest (4320 m) to the hilltop (4642 m) in the Sergyemla Mountains, southeastern Tibet. We measured mass- and area-based leaf construction cost (CCm, CCa) and their components: nitrogen concentration (N-mass), ash concentration (AC), the heat of combustion (HC), and specific leaf area (SLA), as well as leaf lignin concentration (LC) and new leaf dry mass per plant (NLDM). As altitude increased, CCm, CCa, HC, and LC increased. whereas N-mass, SLA, AC, and NLDM decreased. CCm and CCa were positively correlated with HC and LC but negatively with N-mass, SLA, AC and NLDM. CCm, CCa and HC were negatively correlated with mean air temperature. The data indicated that some high-HC constituents like lignin rather than protein contributed to the observed pattern of leaf energy properties. For high-altitude plants, having relatively high leaf CCm and HC can be regarded as a growth strategy for sustaining carbon gain and maximizing nitrogen-use efficiency. Since CC tends to decrease with increasing air temperature, evergreen herbs at high altitude are expected to construct relatively "cheaper" leaves in response to global warming. Crown Copyright (C) 2012 Published by Elsevier Masson SAS. All rights reserved.
关键词Alpine Timberline Altitude Heat Of Combustion Leaf Construction Cost Nitrogen Concentration Specific Leaf Area Evergreen Herb
资助信息National Natural Science Foundation of China [40901038]; National Key Projects for Basic Research of China [2010CB951301]
DOI10.1016/j.actao.2012.05.011
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology
WOS类目Ecology
WOS记录号WOS:000308733500009
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/15794
专题中国科学院青藏高原研究所昆明部
作者单位1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100085, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
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Zhang, Lin,Luo, Tianxiang,Liu, Xinsheng,et al. Altitudinal variation in leaf construction cost and energy content of Bergenia purpurascens[J]. ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY,2012,43(1):72-79.
APA Zhang, Lin,Luo, Tianxiang,Liu, Xinsheng,&Wang, Yun.(2012).Altitudinal variation in leaf construction cost and energy content of Bergenia purpurascens.ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY,43(1),72-79.
MLA Zhang, Lin,et al."Altitudinal variation in leaf construction cost and energy content of Bergenia purpurascens".ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 43.1(2012):72-79.
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