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	Response of Soil C and N, Dissolved Organic C and N, and Inorganic N to Short-Term Experimental Warming in an Alpine Meadow on the Tibetan Plateau
	Yu C. Q. ; Shen Z. X. ; Zhang X. Z. ; Sun W. ; Fu G.
	2014
关键词	plant-growth increased precipitation semiarid grassland microbial biomass nitrogen pools climate-change forest soils carbon respiration metaanalysis
英文摘要	Although alpine meadows of Tibet are expected to be strongly affected by climatic warming, it remains unclear how soil organic C (SOC), total N (TN), ammonium N (NH4 (+)-N), nitrate N (NO3 (+)-N), and dissolved organic C (DOC) and N (DON) respond to warming. This study aims to investigate the responses of these C and N pools to short- term experimental warming in an alpine meadow of Tibet. A warming experiment using open top chambers was conducted in an alpine meadow at three elevations (i.e., a low (4313 m), mid- (4513 m), and high (4693 m) elevation) in May 2010. Topsoil (0-20 cm depth) samples were collected in July-September 2011. Experimental warming increased soil temperature by similar to 1-1.4 degrees C but decreased soil moisture by similar to 0.04 m(3) m(-3). Experimental warming had little effects on SOC, TN, DOC, and DON, which may be related to lower warming magnitude, the short period of warming treatment, and experimental warming-induced soil drying by decreasing soil microbial activity. Experimental warming decreased significantly inorganic N at the two lower elevations, but had negligible effect at the high elevation. Our findings suggested that the effects of short- term experimental warming on SOC, TN and dissolved organic matter were insignificant, only affecting inorganic forms.
出处	Scientific World Journal
收录类别	SCI
语种	英语
ISSN号	1537-744X
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/29444]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Yu C. Q.,Shen Z. X.,Zhang X. Z.,et al. Response of Soil C and N, Dissolved Organic C and N, and Inorganic N to Short-Term Experimental Warming in an Alpine Meadow on the Tibetan Plateau. 2014.

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