气候变化领域集成服务门户(CCPortal): Effects of warming and grazing on soil N availability, species composition, and ANPP in an alpine meadow

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DOI	10.1890/11-1408.1
	Effects of warming and grazing on soil N availability, species composition, and ANPP in an alpine meadow
	Wang, Shiping; Duan, Jichuang; Xu, Guangping; Wang, Yanfen; Zhang, Zhenhua; Rui, Yichao; Luo, Caiyun; Xu, Burenbayin; Zhu, Xiaoxue; Chang, Xiaofeng; Cui, Xiaoyong; Niu, Haishan; Zhao, Xinquan; Wang, Wenying
通讯作者	Wang, SP (通讯作者)
发表日期	2012
ISSN	0012-9658
EISSN	1939-9170
起始页码	2365
结束页码	2376
卷号	93 期号:11
英文摘要	Uncertainty about the effects of warming and grazing on soil nitrogen (N) availability, species composition, and aboveground net primary production (ANPP) limits our ability to predict how global carbon sequestration will vary under future warming with grazing in alpine regions. Through a controlled asymmetrical warming (1.2/1.7 degrees C during daytime/nighttime) with a grazing experiment from 2006 to 2010 in an alpine meadow, we found that warming alone and moderate grazing did not significantly affect soil net N mineralization. Although plant species richness significantly decreased by 10% due to warming after 2008, we caution that this may be due to the transient occurrence or disappearance of some rare plant species in all treatments. Warming significantly increased graminoid cover, except in 2009, and legume cover after 2008, but reduced non-legume forb cover in the community. Grazing significantly decreased cover of graminoids and legumes before 2009 but increased forb cover in 2010. Warming significantly increased ANPP regardless of grazing, whereas grazing reduced the response of ANPP to warming. N addition did not affect ANPP in both warming and grazing treatments. Our findings suggest that soil N availability does not determine ANPP under simulated warming and that heavy grazing rather than warming causes degradation of the alpine meadows.
关键词	PLANT COMMUNITY RESPONSES ORGANIC NITROGEN CLIMATE-CHANGE ECOSYSTEM CARBON TUNDRA MINERALIZATION PRODUCTIVITY METAANALYSIS VEGETATION
英文关键词	alpine meadow; global warming; herbivore; N addition; plant functional group; primary production; species diversity; Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:000310834900008
来源期刊	ECOLOGY
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/258063
推荐引用方式 GB/T 7714	Wang, Shiping,Duan, Jichuang,Xu, Guangping,et al. Effects of warming and grazing on soil N availability, species composition, and ANPP in an alpine meadow[J]. 中国科学院青藏高原研究所,2012,93(11).
APA	Wang, Shiping.,Duan, Jichuang.,Xu, Guangping.,Wang, Yanfen.,Zhang, Zhenhua.,...&Wang, Wenying.(2012).Effects of warming and grazing on soil N availability, species composition, and ANPP in an alpine meadow.ECOLOGY,93(11).
MLA	Wang, Shiping,et al."Effects of warming and grazing on soil N availability, species composition, and ANPP in an alpine meadow".ECOLOGY 93.11(2012).