气候变化领域集成服务门户(CCPortal): Altitudinal variation in leaf construction cost and energy content of Bergenia purpurascens

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DOI	10.1016/j.actao.2012.05.011
	Altitudinal variation in leaf construction cost and energy content of Bergenia purpurascens
	Zhang, Lin; Luo, Tianxiang; Liu, Xinsheng; Wang, Yun
通讯作者	Zhang, L (通讯作者)
发表日期	2012
ISSN	1146-609X
EISSN	1873-6238
起始页码	72
结束页码	79
卷号	43
英文摘要	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	CHEMICAL-COMPOSITION BENEFIT-ANALYSIS LIFE-SPAN LOW-IRRADIANCE PAYBACK TIME FOREST LEAVES NITROGEN PLANTS AREA
英文关键词	Alpine timberline; Altitude; Heat of combustion; Leaf construction cost; Nitrogen concentration; Specific leaf area; Evergreen herb
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:000308733500009
来源期刊	ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257974
推荐引用方式 GB/T 7714	Zhang, Lin,Luo, Tianxiang,Liu, Xinsheng,et al. Altitudinal variation in leaf construction cost and energy content of Bergenia purpurascens[J]. 中国科学院青藏高原研究所,2012,43.
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.
MLA	Zhang, Lin,et al."Altitudinal variation in leaf construction cost and energy content of Bergenia purpurascens".ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 43(2012).