Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13558 |
Plants, microorganisms, and soil temperatures contribute to a decrease in methane fluxes on a drained Arctic floodplain | |
Kwon, Min Jung1; Beulig, Felix2,10; Ilie, Iulia1; Wildner, Marcus3,11; Kuesel, Kirsten2,4; Merbold, Lutz5,12; Mahecha, Miguel D.1,4; Zimov, Nikita6; Zimov, Sergey A.6; Heimann, Martin1,7; Schuur, Edward A. G.8; Kostka, Joel E.9; Kolle, Olaf1; Hilke, Ines1; Goeckede, Mathias1 | |
2017-06-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Switzerland; Russia; Finland; USA; Denmark; Kenya |
英文摘要 | As surface temperatures are expected to rise in the future, ice-rich permafrost may thaw, altering soil topography and hydrology and creating a mosaic of wet and dry soil surfaces in the Arctic. Arctic wetlands are large sources of CH4, and investigating effects of soil hydrology on CH4 fluxes is of great importance for predicting ecosystem feedback in response to climate change. In this study, we investigate how a decade-long drying manipulation on an Arctic floodplain influences CH4-associated microorganisms, soil thermal regimes, and plant communities. Moreover, we examine how these drainage-induced changes may then modify CH4 fluxes in the growing and nongrowing seasons. This study shows that drainage substantially lowered the abundance of methanogens along with methanotrophic bacteria, which may have reduced CH4 cycling. Soil temperatures of the drained areas were lower in deep, anoxic soil layers (below 30 cm), but higher in oxic topsoil layers (0-15 cm) compared to the control wet areas. This pattern of soil temperatures may have reduced the rates of methanogenesis while elevating those of CH4 oxidation, thereby decreasing net CH4 fluxes. The abundance of Eriophorum angustifolium, an aerenchymatous plant species, diminished significantly in the drained areas. Due to this decrease, a higher fraction of CH4 was alternatively emitted to the atmosphere by diffusion, possibly increasing the potential for CH4 oxidation and leading to a decrease in net CH4 fluxes compared to a control site. Drainage lowered CH4 fluxes by a factor of 20 during the growing season, with postdrainage changes in microbial communities, soil temperatures, and plant communities also contributing to this reduction. In contrast, we observed CH4 emissions increased by 10% in the drained areas during the nongrowing season, although this difference was insignificant given the small magnitudes of fluxes. This study showed that long-term drainage considerably reduced CH4 fluxes through modified ecosystem properties. |
英文关键词 | aerenchyma closed dynamic chamber fall methane fluxes methanogens Siberia |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400445900023 |
WOS关键词 | POLYGONAL TUNDRA ; SP NOV. ; CARBON-DIOXIDE ; LENA DELTA ; METHYLOCYSTIS STRAIN ; GLOBAL DISTRIBUTION ; ARCHAEAL COMMUNITY ; OXIDIZING BACTERIA ; PERMAFROST CARBON ; TUSSOCK TUNDRA |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17532 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Max Planck Inst Biogeochem, Hans Knoll Str 10, D-07745 Jena, Germany; 2.Friedrich Schiller Univ Jena, Inst Ecol, Aquat Geomicrobiol, Dornburgerstr 159, D-07743 Jena, Germany; 3.Univ Bayreuth, Fac Biol Chem & Earth Sci, Geoecol Environm Sci Micrometeorol & Atmospher Ch, Univ Str 30, D-95447 Bayreuth, Germany; 4.German Ctr Integrat Biodivers Res iDiv, Deutsch Pl 5d, D-04103 Leipzig, Germany; 5.Swiss Fed Inst Technol, Inst Agr Sci, Dept Environm Syst Sci, Univ Str 16, CH-8092 Zurich, Switzerland; 6.Russian Acad Sci, Pacif Inst Geog, North East Sci Stn, Far Eastern Branch, POB 18, Chersky, Republic Sakha, Russia; 7.Univ Helsinki, Dept Phys, Div Atmospher Sci, POB 64, FI-00014 Helsinki, Finland; 8.No Arizona Univ, Dept Biol Sci, Ctr Ecosyst Sci & Soc, POB 5620, Flagstaff, AZ 86011 USA; 9.Georgia Inst Technol, Sch Biol, North Ave, Atlanta, GA 30332 USA; 10.Aarhus Univ, Ctr Geomicrobiol, Dept Biosci, Ny Munkegade 114-116, DK-8000 Aarhus C, Denmark; 11.Leibniz Inst Freshwater Ecol & Inland Fisheries, Muggelseedamm 310, D-12587 Berlin, Germany; 12.Mazingira Ctr, Int Livestock Res Inst, POB 30709, Nairobi 00100, Kenya |
推荐引用方式 GB/T 7714 | Kwon, Min Jung,Beulig, Felix,Ilie, Iulia,et al. Plants, microorganisms, and soil temperatures contribute to a decrease in methane fluxes on a drained Arctic floodplain[J]. GLOBAL CHANGE BIOLOGY,2017,23(6). |
APA | Kwon, Min Jung.,Beulig, Felix.,Ilie, Iulia.,Wildner, Marcus.,Kuesel, Kirsten.,...&Goeckede, Mathias.(2017).Plants, microorganisms, and soil temperatures contribute to a decrease in methane fluxes on a drained Arctic floodplain.GLOBAL CHANGE BIOLOGY,23(6). |
MLA | Kwon, Min Jung,et al."Plants, microorganisms, and soil temperatures contribute to a decrease in methane fluxes on a drained Arctic floodplain".GLOBAL CHANGE BIOLOGY 23.6(2017). |
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