干旱区生态环境知识资源中心(Arid): How does grazing exclusion influence plant productivity and community structure in alpine grasslands of the Qinghai-Tibetan Plateau?

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DOI	10.1016/j.gecco.2020.e01066
	How does grazing exclusion influence plant productivity and community structure in alpine grasslands of the Qinghai-Tibetan Plateau?
	Liu, Xiang; Ma, Zhiwen; Huang, Xiaotao; Li, Lanhai
通讯作者	Li, LH
来源期刊	GLOBAL ECOLOGY AND CONSERVATION
ISSN	2351-9894
出版年	2020
卷号	23
英文摘要	Grazing exclusion by fencing is a commonly used management practice for restoring the degraded alpine grasslands on the Qinghai-Tibetan Plateau (QTP). However, there is currently no consensus on how grazing exclusion influences plant productivity and community structure in alpine grasslands in this region. Here, a meta-analysis was conducted to quantitatively assess the impacts of grazing exclusion on plant biomass (aboveground biomass, AGB; belowground biomass, BGB; and total biomass, TB) and various plant diversity indices (species richness, Shannon-Wiener diversity index, and Pielou evenness index) in alpine grasslands on the QTP. The results showed that on average, grazing exclusion significantly increased plant coverage, AGB, BGB, TB, and species richness by 34.4%, 93.1%, 58.0%, 67.4%, and 8.3%, respectively. In contrast, significant reductions in both Shannon-Wiener diversity index (-6.7%) and Pielou evenness index (-6.1%) were detected following grazing exclusion. It was observed that the effectiveness of grazing exclusion on recovering plant coverage, AGB, TB, and species richness decreased with the duration of grazing exclusion, and the effect size of plant species richness was negatively correlated to the duration of grazing exclusion. These results indicated that plant species might decrease with the duration of grazing exclusion. The increases in AGB, BGB, and TB were all significantly higher in alpine meadow than those in alpine steppe and alpine desert steppe, demonstrating that grazing exclusion was more effective in promoting plant productivity in alpine meadow than in the other two grassland types. However, the effects of grazing exclusion on plant diversity indices did not differ significantly among the three grassland types. The research suggest that grazing exclusion is an effective way to recover plant productivity and diversity in alpine grassland of the QTP, especially in alpine meadow, and the period of grazing exclusion should be related to the state and function of the grassland. (C) 2020 The Authors. Published by Elsevier B.V.
英文关键词	Grazing exclusion Plant biomass Plant diversity Grassland Alpine region
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000568736700020
WOS关键词	KOBRESIA-PYGMAEA ECOSYSTEM ; ABOVEGROUND BIOMASS ; SOIL CARBON ; LIVESTOCK EXCLUSION ; NITROGEN STOCKS ; XIZANG PLATEAU ; VEGETATION ; DIVERSITY ; DYNAMICS ; MEADOW
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326222
作者单位	[Liu, Xiang; Ma, Zhiwen] Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810016, Peoples R China; [Ma, Zhiwen] Qinghai Univ, Coll Ecoenvironm Engn, Xining 810016, Peoples R China; [Huang, Xiaotao] Chinese Acad Sci, NorthwestInst Plateau Biol, Key Lab Restorat Ecol Cold Reg Qinghai, Xining 810008, Peoples R China; [Li, Lanhai] Chinese Acad Sci, Xinjiang Inst Ecologyand Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; [Li, Lanhai] Chinese Acad Sci, Yili Sta Watershed Ecosyst Res, Xinyuan 835800, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiang,Ma, Zhiwen,Huang, Xiaotao,et al. How does grazing exclusion influence plant productivity and community structure in alpine grasslands of the Qinghai-Tibetan Plateau?[J]. 中国科学院新疆生态与地理研究所,2020,23.
APA	Liu, Xiang,Ma, Zhiwen,Huang, Xiaotao,&Li, Lanhai.(2020).How does grazing exclusion influence plant productivity and community structure in alpine grasslands of the Qinghai-Tibetan Plateau?.GLOBAL ECOLOGY AND CONSERVATION,23.
MLA	Liu, Xiang,et al."How does grazing exclusion influence plant productivity and community structure in alpine grasslands of the Qinghai-Tibetan Plateau?".GLOBAL ECOLOGY AND CONSERVATION 23(2020).