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Increased precipitation accelerates soil organic matter turnover associated with microbial community composition in topsoil of alpine grassland on the eastern Tibetan Plateau
Han, CH (Han, Conghai)1,2; Wang, ZL (Wang, Zongli)3; Si, GC (Si, Guicai)4; Lei, TZ (Lei, Tianzhu)4; Yuan, YL (Yuan, Yanli)1; Zhang, GX (Zhang, Gengxin)1; Zhang, GX
Source PublicationCANADIAN JOURNAL OF MICROBIOLOGY
2017
Volume63Issue:10Pages:811-821
DOI10.1139/cjm-2017-0157
AbstractLarge quantities of carbon are stored in alpine grassland of the Tibetan Plateau, which is extremely sensitive to climate change. However, it remains unclear whether soil organic matter (SOM) in different layers responds to climate change analogously, and whether microbial communities play vital roles in SOM turnover of topsoil. In this study we measured and collected SOM turnover by the C-14 method in alpine grassland to test climatic effects on SOM turnover in soil profiles. Edaphic properties and microbial communities in the northwestern Qinghai Lake were investigated to explore microbial influence on SOM turnover. SOM turnover in surface soil (0-10 cm) was more sensitive to precipitation than that in subsurface layers (10-40 cm). Precipitation also imposed stronger effects on the composition of microbial communities in the surface layer than that in deeper soil. At the 5-10 cm depth, the SOM turnover rate was positively associated with the bacteria/fungi biomass ratio and the relative abundance of Acidobacteria, both of which are related to precipitation. Partial correlation analysis suggested that increased precipitation could accelerate the SOM turnover rate in topsoil by structuring soil microbial communities. Conversely, carbon stored in deep soil would be barely affected by climate change. Our results provide valuable insights into the dynamics and storage of SOM in alpine grasslands under future climate scenarios.
Subject Area普通生物学
WOS IDWOS:000412174100001
Language英语
Indexed BySCI
KeywordCarbon Turnover Climate-change Litter Decomposition Loess Plateau China Temperature Vegetation Mineralization (Co2)-c-14 Bacterial
WOS Research AreaBiochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Immunology; Microbiology
WOS SubjectBiochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Immunology; Microbiology ; Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Immunology; Microbiology
Cooperation Status国内
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/7971
Collection图书馆
Corresponding AuthorZhang, GX
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China.
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
3.Lanzhou Univ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China.
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources, Gansu Prov Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China.
Recommended Citation
GB/T 7714
Han, CH ,Wang, ZL ,Si, GC ,et al. Increased precipitation accelerates soil organic matter turnover associated with microbial community composition in topsoil of alpine grassland on the eastern Tibetan Plateau[J]. CANADIAN JOURNAL OF MICROBIOLOGY,2017,63(10):811-821.
APA Han, CH .,Wang, ZL .,Si, GC .,Lei, TZ .,Yuan, YL .,...&Zhang, GX.(2017).Increased precipitation accelerates soil organic matter turnover associated with microbial community composition in topsoil of alpine grassland on the eastern Tibetan Plateau.CANADIAN JOURNAL OF MICROBIOLOGY,63(10),811-821.
MLA Han, CH ,et al."Increased precipitation accelerates soil organic matter turnover associated with microbial community composition in topsoil of alpine grassland on the eastern Tibetan Plateau".CANADIAN JOURNAL OF MICROBIOLOGY 63.10(2017):811-821.
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