Knowledge Management System of Northwest Institute of Plateau Biology, CAS
Precipitation overrides warming in mediating soil nitrogen pools in an alpine grassland ecosystem on the Tibetan Plateau | |
Lin, Li1,2; Zhu, Biao1,2; Chen, Chengrong3; Zhang, Zhenhua4; Wang, Qi-Bing5; He, Jin-Sheng1,2,4 | |
2016-08-16 | |
发表期刊 | SCIENTIFIC REPORTS |
卷号 | 6 |
文章类型 | Article |
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. |
WOS标题词 | Science & Technology |
DOI | 10.1038/srep31438 |
关键词[WOS] | MICROBIAL BIOMASS ; ORGANIC NITROGEN ; CLIMATE-CHANGE ; TALLGRASS PRAIRIE ; NORTHERN CHINA ; PLANT-GROWTH ; AMINO-ACIDS ; SHORT-TERM ; LAND-USE ; CARBON |
收录类别 | SCI |
语种 | 英语 |
项目资助者 | National Program on Key Basic Research Project of the Ministry of Science and Technology of the People's Republic of China(2014CB954003 ; 2014CB954004) |
WOS研究方向 | Science & Technology - Other Topics |
WOS类目 | Multidisciplinary Sciences |
WOS记录号 | WOS:000392117700001 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/6813 |
专题 | 中国科学院西北高原生物研究所 |
作者单位 | 1.Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Beijing 100871, Peoples R China 2.Peking Univ, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China 3.Griffith Univ, Environm Futures Res Inst, Griffith Sch Environm, Nathan, Qld 4111, Australia 4.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, 23 Xinning Rd, Xining 810008, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, 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). |
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