Multilevel Nitrogen Additions Alter Chemical Composition and Turnover of the Labile Fraction Soil Organic Matter via Effects on Vegetation and Microorganisms
文献类型：期刊论文
| 作者 | Chen, Qiuyu1,2,3; Niu, Bin2,4; Hu, Yilun2,4; Wang, Jian5; Lei, Tianzhu6; Xu-Ri2; Zhou, Jizhong7,8; Xi, Chuanwu9; Zhang, Gengxin1,2,3 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 125期号:4页码:13 |
| ISSN号 | 2169-8953 |
| DOI | 10.1029/2019JG005316 |
| 英文摘要 | Global nitrogen (N) deposition greatly impacts soil carbon sequestration. A 2-yr multiple N addition (0, 10, 20, 40, 80, and 160 kg N.ha(-1).yr(-1)) experiment was conducted in alpine grassland to illustrate the mechanisms underlying the observed soil organic matter (SOM) dynamics on the Qinghai-Tibet Plateau (QTP). Labile fraction SOM (LF-SOM) fingerprints were characterized by pyrolysis-gas chromatography/tandem-mass spectrometry, and microbial functional genes (GeoChip 4.6) were analyzed in conjunction with LF-SOM fingerprints to decipher the responses of LF-SOM transformation to N additions. The significant correlations between LF-SOM and microbial biomass, between organic compounds in LF-SOM and compound degradation-related genes, and between LF-SOM and net ecosystem exchange implied LF-SOM were the main fraction utilized by microorganisms and the most sensitive fraction to N additions. The LF-SOM increased at the lowest N addition levels (10 and 20 kg N.ha(-1).yr(-1)) and decreased at higher N addition levels (40 to 160 kg N.ha(-1).yr(-1)), but the decrease of LF-SOM was weakened at 160 kg N.ha(-1).yr(-1) addition. The nonlinear response of LF-SOM to N additions was due to the mass balance between plant inputs and microbial degradation. Plant-derived compounds in LF-SOM were more sensitive to N addition than microbial-derived and aromatic compounds. It is predicted that when the N deposition rate increased by 10 kg N.ha(-1).yr(-1) on the QTP, carbon sequestration in the labile fraction may increase by nearly 170% compared with that under the current N deposition rate. These findings provide insight into future N deposition impacts on LF-SOM preservation on the QTP. |
| WOS关键词 | ALPINE MEADOW SOIL ; COMMUNITY COMPOSITION ; MICROBIAL COMMUNITY ; FERTILIZATION DECREASES ; MASS-SPECTROMETRY ; TIBETAN PLATEAU ; PYROLYSIS-GC/MS ; CARBON ; DEPOSITION ; PLANT |
| 资助项目 | National Natural Science Foundation of China[41871066] ; National Natural Science Foundation of China[41471055] ; National Natural Science Foundation of China[41775161] ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences[XDA20050101] ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences[XDA20050102] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0503] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000535659000010 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/96684]  |
| 专题 | 地质与地球物理研究所_兰州油气中心 |
| 通讯作者 | Zhang, Gengxin |
| 作者单位 | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Beijing, Peoples R China 3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Key Lab Alpine Ecol, Beijing, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Inst Mt Hazards & Environm, Chengdu, Peoples R China 6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Lanzhou, Peoples R China 7.Univ Oklahoma, Dept Microbiol & Plant Biol, Inst Environm Genom, Norman, OK 73019 USA 8.Univ Oklahoma, Sch Civil Engn & Environm Sci, Inst Environm Genom, Norman, OK 73019 USA 9.Univ Michigan, Sch Publ Hlth, Dept Environm Hlth Sci, Ann Arbor, MI 48109 USA |
| 推荐引用方式 GB/T 7714 | Chen, Qiuyu,Niu, Bin,Hu, Yilun,et al. Multilevel Nitrogen Additions Alter Chemical Composition and Turnover of the Labile Fraction Soil Organic Matter via Effects on Vegetation and Microorganisms[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2020,125(4):13. |
| APA | Chen, Qiuyu.,Niu, Bin.,Hu, Yilun.,Wang, Jian.,Lei, Tianzhu.,...&Zhang, Gengxin.(2020).Multilevel Nitrogen Additions Alter Chemical Composition and Turnover of the Labile Fraction Soil Organic Matter via Effects on Vegetation and Microorganisms.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,125(4),13. |
| MLA | Chen, Qiuyu,et al."Multilevel Nitrogen Additions Alter Chemical Composition and Turnover of the Labile Fraction Soil Organic Matter via Effects on Vegetation and Microorganisms".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 125.4(2020):13. |
入库方式： OAI收割
来源：地质与地球物理研究所
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