气候变化领域集成服务门户(CCPortal): Effect of grazing exclusion on ecosystem respiration among three different alpine grasslands on the central Tibetan Plateau

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DOI	10.1016/j.ecoleng.2016.06.112
	Effect of grazing exclusion on ecosystem respiration among three different alpine grasslands on the central Tibetan Plateau
	Zhao, Jingxue; Li, Xiang; Li, Ruicheng; Tian, Lihua; Zhang, Tao
通讯作者	Zhao, JX (通讯作者)
发表日期	2016
ISSN	0925-8574
EISSN	1872-6992
起始页码	599
结束页码	607
卷号	94
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.
关键词	SOIL CO2 EFFLUX LARGE ALTITUDINAL GRADIENT TEMPERATURE SENSITIVITY CARBON-DIOXIDE LOESS PLATEAU CLIMATE-CHANGE MEADOW Q(10)MANAGEMENT RESPONSES
英文关键词	Alpine grassland; Ecosystem respiration; Grazing exclusion; Q(10); The Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Engineering
WOS类目	Ecology ; Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000381636400065
来源期刊	ECOLOGICAL ENGINEERING
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/258771
推荐引用方式 GB/T 7714	Zhao, Jingxue,Li, Xiang,Li, Ruicheng,et al. Effect of grazing exclusion on ecosystem respiration among three different alpine grasslands on the central Tibetan Plateau[J]. 中国科学院青藏高原研究所,2016,94.
APA	Zhao, Jingxue,Li, Xiang,Li, Ruicheng,Tian, Lihua,&Zhang, Tao.(2016).Effect of grazing exclusion on ecosystem respiration among three different alpine grasslands on the central Tibetan Plateau.ECOLOGICAL ENGINEERING,94.
MLA	Zhao, Jingxue,et al."Effect of grazing exclusion on ecosystem respiration among three different alpine grasslands on the central Tibetan Plateau".ECOLOGICAL ENGINEERING 94(2016).