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Grazing and spring snow counteract the effects of warming on an alpine plant community in Tibet through effects on the dominant species
Dorji, T (Dorji, Tsechoe)1,2; Hopping, KA (Hopping, Kelly A.)3,4; Wang, SP (Wang, Shiping)1,2; Piao, SL (Piao, Shilong)1,2; Tarchene, T (Tarchene, Tenzin)5; Klein, JA (Klein, Julia A.)4,6
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY 
2018
Volume263Issue:0Pages:188-197
DOI10.1016/j.agrformet.2018.08.017
Abstract

Although studies have investigated the independent effects of warming, snow, and grazing on alpine plant community properties - including plant species richness, evenness, and diversity - the interactive effects of these climate and grazing factors have not been addressed experimentally in cold systems. We investigate the effects of these climate change and grazing factors using 5 years of data collected from a relatively long-term (2009-2015), fully-factorial field experiment in an alpine meadow ecosystem on the central Tibetan Plateau. Specifically, we investigate: 1) how experimental warming, spring snow addition, and yak grazing independently and interactively affect plant community properties, including diversity metrics and relative contributions of different plant life forms to the total plant cover, and 2) how the changes in plant community properties are associated with the proportional cover of the dominant plant species, Kobresia pygmaea within the total vegetation cover. We found that warming reduced species richness and increased species evenness and the proportional cover of shrubs within the total vegetation cover. Snow addition also increased species evenness. Grazing increased the proportional cover of K. pygmaea within the total vegetation cover, while decreasing that of grasses. Grazing also counteracted warming-induced increases in shrubs. Treatment-induced changes in K. pygmaea cover were strongly correlated with the indices of plant community properties and were generally in the opposite direction of changes in species evenness and diversity. We conclude that the projected increases in spring snowstorms and maintaining moderate levels of grazing can counteract some warming effects on the plant community. Moreover, the performance of the dominant species can regulate plant community responses to climate change and livestock grazing on the central Tibetan Plateau.

Subject AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000449236500018
Language英语
Indexed BySCIE
KeywordPlateau Vegetation Responses Climate Ecosystem Tundra Diversity Dynamics Meadow Biodiversity
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
Cooperation Status国际
ISSN0168-1923
Department高寒生态重点实验室
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8475
Collection图书馆
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Nongke Rd 6, Lhasa 850000, Tibet Autonomou, Peoples R China;
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Campus 16 Lincui Rd, Beijing 100101, Peoples R China;
3.Boise State Univ, Human Environm Syst, Boise, ID 83725 USA;
4.Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA;
5.Acad Agr & Anim Husb Tibet Autonomous Reg, Inst Grass Sci, Lhasa 850000, Tibet Autonomou, Peoples R China;
6.Colorado State Univ, Dept Ecosyst Sci & Sustainabil, Ft Collins, CO 80523 USA.
Recommended Citation
GB/T 7714
Dorji, T ,Hopping, KA ,Wang, SP ,et al. Grazing and spring snow counteract the effects of warming on an alpine plant community in Tibet through effects on the dominant species[J]. AGRICULTURAL AND FOREST METEOROLOGY ,2018,263(0):188-197.
APA Dorji, T ,Hopping, KA ,Wang, SP ,Piao, SL ,Tarchene, T ,&Klein, JA .(2018).Grazing and spring snow counteract the effects of warming on an alpine plant community in Tibet through effects on the dominant species.AGRICULTURAL AND FOREST METEOROLOGY ,263(0),188-197.
MLA Dorji, T ,et al."Grazing and spring snow counteract the effects of warming on an alpine plant community in Tibet through effects on the dominant species".AGRICULTURAL AND FOREST METEOROLOGY  263.0(2018):188-197.
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