气候变化领域集成服务门户(CCPortal): Plant Species Richness, Evenness, and Composition along Environmental Gradients in an Alpine Meadow Grazing Ecosystem in Central Tibet, China

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DOI	10.1657/1938-4246-46.2.308
	Plant Species Richness, Evenness, and Composition along Environmental Gradients in an Alpine Meadow Grazing Ecosystem in Central Tibet, China
	Dorji, Tsechoe; Moe, Stein R.; Klein, Julia A.; Totland, Orjan
通讯作者	Dorji, T (通讯作者)
发表日期	2014
ISSN	1523-0430
EISSN	1938-4246
起始页码	308
结束页码	326
卷号	46 期号:2
英文摘要	Plant community properties such as species richness, evenness, and composition vary along environmental gradients. Arid and semi-arid ecosystems, such as the central Tibetan Plateau, are thought to be sensitive to changes in temperature and water availability, and also influenced by a long history of herbivore grazing. We used linear mixed effect models and Canonical Correspondence Analysis to explore how plant community properties varied along gradients of elevation, soil moisture, grazing intensity, solar radiation, ground surface roughness (ground concavity), and pika abundance in an alpine meadow ecosystem in central Tibet. We found that species richness increased with elevation. Species evenness increased with soil moisture at lower elevation, but decreased with soil moisture at higher elevation. Species composition was significantly associated with all environmental variables except solar radiation. The abundance of the dominant plant species, K. pygmaea, which is driven primarily by soil moisture, was also an important variable. We conclude that open patches (habitat), associated with elevation, number of pika burrows and surface roughness, and soil moisture and its effects on K pygmaea were the most important environmental variables creating variation in plant community properties across this landscape.
关键词	ELEVATIONAL GRADIENT PATTERNS DYNAMICS BIODIVERSITY COMMUNITIES VEGETATION DIVERSITY MECHANISMS PLATEAU HABITAT
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
WOS类目	Environmental Sciences ; Geography, Physical
WOS记录号	WOS:000336778500002
来源期刊	ARCTIC ANTARCTIC AND ALPINE RESEARCH
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/258322
推荐引用方式 GB/T 7714	Dorji, Tsechoe,Moe, Stein R.,Klein, Julia A.,et al. Plant Species Richness, Evenness, and Composition along Environmental Gradients in an Alpine Meadow Grazing Ecosystem in Central Tibet, China[J]. 中国科学院青藏高原研究所,2014,46(2).
APA	Dorji, Tsechoe,Moe, Stein R.,Klein, Julia A.,&Totland, Orjan.(2014).Plant Species Richness, Evenness, and Composition along Environmental Gradients in an Alpine Meadow Grazing Ecosystem in Central Tibet, China.ARCTIC ANTARCTIC AND ALPINE RESEARCH,46(2).
MLA	Dorji, Tsechoe,et al."Plant Species Richness, Evenness, and Composition along Environmental Gradients in an Alpine Meadow Grazing Ecosystem in Central Tibet, China".ARCTIC ANTARCTIC AND ALPINE RESEARCH 46.2(2014).