Precipitation overrides warming in mediating soil nitrogen pools in an alpine grassland ecosystem on the Tibetan Plateau

doi:10.1038/srep31438

CORC > 植物研究所 > 中国科学院植物研究所 > 中科院植物分子生理学重点实验室

	Precipitation overrides warming in mediating soil nitrogen pools in an alpine grassland ecosystem on the Tibetan Plateau
	Lin, Li ; Zhu, Biao ; Chen, Chengrong 5; Zhang, Zhenhua ; Wang, Qi-Bing ; He, Jin-Sheng
刊名	SCIENTIFIC REPORTS
	2016
卷号	6
ISSN号	2045-2322
DOI	10.1038/srep31438
文献子类	Article
英文摘要	Soils in the alpine grassland store a large amount of nitrogen (N) due to slow decomposition. However, the decomposition could be affected by climate change, which has profound impacts on soil N cycling. We investigated the changes of soil total N and five labile N stocks in the topsoil, the subsoil and the entire soil profile in response to three years of experimental warming and altered precipitation in a Tibetan alpine grassland. We found that warming significantly increased soil nitrate N stock and decreased microbial biomass N (MBN) stock. Increased precipitation reduced nitrate N, dissolved organic N and amino acid N stocks, but increased MBN stock in the topsoil. No change in soil total N was detected under warming and altered precipitation regimes. Redundancy analysis further revealed that soil moisture (26.3%) overrode soil temperature (10.4%) in explaining the variations of soil N stocks across the treatments. Our results suggest that precipitation exerted stronger influence than warming on soil N pools in this mesic and high-elevation grassland ecosystem. This indicates that the projected rise in future precipitation may lead to a significant loss of dissolved soil N pools by stimulating the biogeochemical processes in this alpine grassland.
学科主题	Multidisciplinary Sciences
出版地	BERLIN
WOS关键词	MICROBIAL BIOMASS ; ORGANIC NITROGEN ; CLIMATE-CHANGE ; PLANT-GROWTH ; AMINO-ACIDS ; SHORT-TERM ; LAND-USE ; CARBON ; RESPONSES ; WATER
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	NATURE PORTFOLIO
WOS记录号	WOS:000392117700001
资助机构	National Program on Key Basic Research Project of the Ministry of Science and Technology of the People's Republic of China [2014CB954003, 2014CB954004]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/24741]
专题	中科院植物分子生理学重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, 23 Xinning Rd, Xining 810008, Peoples R China 3.Griffith Univ, Environm Futures Res Inst, Griffith Sch Environm, Nathan, Qld 4111, Australia 4.Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Beijing 100871, Peoples R China 5.Peking Univ, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Lin, Li,Zhu, Biao,Chen, Chengrong,et al. Precipitation overrides warming in mediating soil nitrogen pools in an alpine grassland ecosystem on the Tibetan Plateau[J]. SCIENTIFIC REPORTS,2016,6.
APA	Lin, Li,Zhu, Biao,Chen, Chengrong,Zhang, Zhenhua,Wang, Qi-Bing,&He, Jin-Sheng.(2016).Precipitation overrides warming in mediating soil nitrogen pools in an alpine grassland ecosystem on the Tibetan Plateau.SCIENTIFIC REPORTS,6.
MLA	Lin, Li,et al."Precipitation overrides warming in mediating soil nitrogen pools in an alpine grassland ecosystem on the Tibetan Plateau".SCIENTIFIC REPORTS 6(2016).