气候变化领域集成服务门户(CCPortal): The altitudinal distribution center of a widespread cushion species is related to an optimum combination of temperature and precipitation in the central Tibetan Plateau

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DOI	10.1016/j.jaridenv.2012.07.018
	The altitudinal distribution center of a widespread cushion species is related to an optimum combination of temperature and precipitation in the central Tibetan Plateau
	Li, R.; Luo, T.; Tang, Y.; Du, M.; Zhang, X.
通讯作者	Luo, T (通讯作者)
发表日期	2013
ISSN	0140-1963
EISSN	1095-922X
起始页码	70
结束页码	77
卷号	88
英文摘要	Climate warming may threaten the survival of alpine cushion plants, which may have great implications for the stability of alpine ecosystems. However, little research has investigated the climatic causes of the altitudinal distribution of cushion plants. We hypothesize that for a widespread cushion species in semi-arid regions, there is a unimodal pattern of plant cover associated with an optimum combination of temperature and precipitation. We conducted a livestock exclosure experiment across the upper (5300 m) and lower (4430 m) limits of a widespread cushion species (Androsace tapete) along the south-facing slope of the Nyaiqentanglha Mountains during the period 2006-2010. The plant cover and survival across the fenced and unfenced quadrats were observed near weather stations at eight altitudes. There was a unimodal pattern in the coverage of A. tapete along the experimental gradient, which was confirmed by additional data from other species and mountains in this region. The coverage showed quadratic relationships with mean temperatures and the ratio of growing-season precipitation to the >= 5 degrees C accumulated temperature sum. Five-year monitoring data under fenced conditions demonstrated that the annual survival of A. tapete decreased away from the optimum distribution center. The results supported the hypothesis, suggesting a shift in the limiting factors of plant distribution between low and high altitudes. (c) 2012 Elsevier Ltd. All rights reserved.
关键词	ANDROSACE-TAPETE PRIMULACEAE SPATIAL GENETIC-STRUCTURE NET PRIMARY PRODUCTIVITY ALPINE GRADIENTS HIGH ANDES ELEVATION RESPONSES BIOMASS PLANTS ECOSYSTEMS
英文关键词	Alpine meadow; Climate; Cushion plant; Distribution pattern; Limiting factor; Plant cover; Survival
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology ; Environmental Sciences
WOS记录号	WOS:000313392900010
来源期刊	JOURNAL OF ARID ENVIRONMENTS
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/258197
推荐引用方式 GB/T 7714	Li, R.,Luo, T.,Tang, Y.,et al. The altitudinal distribution center of a widespread cushion species is related to an optimum combination of temperature and precipitation in the central Tibetan Plateau[J]. 中国科学院青藏高原研究所,2013,88.
APA	Li, R.,Luo, T.,Tang, Y.,Du, M.,&Zhang, X..(2013).The altitudinal distribution center of a widespread cushion species is related to an optimum combination of temperature and precipitation in the central Tibetan Plateau.JOURNAL OF ARID ENVIRONMENTS,88.
MLA	Li, R.,et al."The altitudinal distribution center of a widespread cushion species is related to an optimum combination of temperature and precipitation in the central Tibetan Plateau".JOURNAL OF ARID ENVIRONMENTS 88(2013).