Authors
Shiping Wang, Jichuang Duan, Guangping Xu, Yanfen Wang, Zhenhua Zhang, Yichao Rui, Caiyun Luo, Burenbayin Xu, Xiaoxue Zhu, Xiaofeng Chang, Xiaoyong Cui, Haishan Niu, Xinquan Zhao, Wenying Wang
Publication date
2012/11
Journal
Ecology
Volume
93
Issue
11
Pages
2365-2376
Publisher
Ecological Society of America
Description
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°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 …
Total citations
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