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学科主题: 生物科学::普通生物学
题名: Effect of grazing exclusion on ecosystem respiration among three different alpine grasslands on the central Tibetan Plateau
作者: Zhao, JX (Zhao, Jingxue)1, 2; Li, X (Li, Xiang)1; Li, RC (Li, Ruicheng)2; Tian, LH (Tian, Lihua)3; Zhang, T (Zhang, Tao)4
通讯作者: Zhao, JX
关键词: SOIL CO2 EFFLUX ; LARGE ALTITUDINAL GRADIENT ; TEMPERATURE SENSITIVITY ; CARBON-DIOXIDE ; CLIMATE-CHANGE ; LOESS PLATEAU ; CHINA ; MEADOW ; FOREST ; Q(10)
刊名: ECOLOGICAL ENGINEERING
发表日期: 2016
DOI: 10.1016/j.ecoleng.2016.06.112
卷: 94, 期:0, 页:599-607
收录类别: SCI
合作性质: 国内
文章类型: Article
部门归属: 生态
英文摘要: Alpine grasslands are currently experiencing an increasing threat from overgrazing, and grazing exclusion has been widely used as a simple and effective method for restoring degraded grasslands on the Tibetan Plateau (TP). This paper studied effects of grazing exclusion on ecosystem respiration (Re), plant and soil characteristics for two growing season (2012 and 2013) in three alpine grasslands (alpine steppe, alpine meadow and swamp meadow) on the central TP. Grazing exclusion enhanced plant height, total cover, aboveground biomass and belowground biomass in all the three alpine grasslands. Grazing exclusion increased Re in alpine steppe and alpine meadow, but decreased Re in swamp meadow. Soil temperature and soil moisture well explained the seasonal variations of Re in alpine steppe and alpine meadow. However, soil temperature, rather than soil moisture, was the major environment factor controlling the seasonal variation of Re in swamp meadows. The temperature sensitivity of Re (Q(10)) was higher in swamp meadow and alpine meadow compared with alpine steppe. Grazing exclusion had a slight tendency to decrease Q(10) in alpine steppe and alpine meadow, but increase Q(10) in swamp meadows. Results suggest that grazing exclusion effects on Re and Q(10) of alpine grassland were determined by vegetation types. (C) 2016 Elsevier B.V. All rights reserved.
语种: 英语
WOS记录号: WOS:000381636400065
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7618
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Bldg 3,16 Lin Cui Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Southwest Univ Nationalities, Inst Qinghai Tibetan Plateau, Chengdu 610041, Peoples R China
4.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, Lanzhou 730000, Peoples R China

Recommended Citation:
Zhao, JX ,Li, X ,Li, RC ,et al. Effect of grazing exclusion on ecosystem respiration among three different alpine grasslands on the central Tibetan Plateau[J]. ECOLOGICAL ENGINEERING,2016,94(0):599-607.
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