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崇明东滩不同演替阶段湿地土壤有机碳汇聚能力的差异性及其微生物机制

Keywords: 优势菌,微生物群落,土壤微生物呼吸,土壤有机碳,滨海湿地

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Abstract:

旨在阐明崇明东滩不同演替阶段湿地土壤有机碳汇聚能力的差异性及其机制,以期为优化湿地的管理与保育措施,进而保持和提升湿地的碳汇功能提供理论指导和决策依据。研究结果表明,4个不同演替阶段湿地土壤有机碳含量和微生物呼吸强度有显著差异(P<0.05),中高潮滩处的土壤有机碳汇聚能力最高,这是由于其具有较高的有机碳输入(植物枯落物)和相对较低的碳输出(土壤呼吸)。PCR-DGGE分析和系统进化树结果表明,4个不同演替阶段土壤的微生物群落结构存在差异,一些特异性优势菌的存在可能是影响土壤微生物呼吸强度,并最终影响土壤有机碳汇聚能力的重要原因。出现在高潮滩的噬纤维菌和假单胞属菌具有较高降解纤维素等有机质的能力,它们的存在可能强化了高潮滩的土壤呼吸作用,从而降低了高潮滩土壤的有机碳汇聚能力。

References

[1]  Kraigher B;Stres B;Hacin J,Microbial activity and community structure in two drained fen soils in the Ljubljana Marsh,Soil Biology and Biochemistry,2006.
[2]  Hanson PJ;Edwards NT;Garten CT,Separating root and soil microbial contributions to soil respiration:a review of methods and observations,Biogeochemistry? ,2000, 48.
[3]  Henriksen T M;Breland T A,Nitrogen availability effects on carbon mineralization,fungal and bacterial growth,and enzyme activities during decomposition of wheat straw in soil,Soil Biology and Biochemistry,1999.
[4]  Hügler M;Wirsen C O;Fuchs G,Evidence for autotrophic CO2 fixation via the reductive tricarboxylic acid cycle by members of the epsilon subdivision of proteobacteria,Journal of Bocteriology,2005(9).
[5]  Bradshaw C W;Fu H;Shen G J,A Pseudomonas sp.alcohol dehydroge,nase with broad substrate specificity and unusual stereo specificity for organic synthesis,Journal of Organic Chemistry,1992.
[6]  Reichenbach H;Dworkin M,The order cytophagales,New York:springer-verlag,1991.
[7]  Strom L. ;Ekberg A. ;Mastepanov M. ;Christensen TR.,The effect of vascular plants on carbon turnover and methane emissions from a tundra wetland,Global change biology?,2003, 9(8).
[8]  姚槐应;黄昌勇,土壤微生物生态学及其实验技术,北京:科学出版社,2006.
[9]  Li Y L;Wang L;Zhang W Q,The variability of soil microbial community composition of different types of tidal wetland in Chongming Dongtan and its effect on soil microbial respiration,Ecological Engineering,2011(9).
[10]  王红丽;肖春玲;李朝君,崇明东滩湿地土壤有机碳的空间分异特征及影响因素,农业环境科学学报,2009(7).
[11]  郭海强,长江河口湿地碳通量的地面监测及遥感模拟研究,上海:复旦大学,2010.
[12]  全为民;李春鞠;沈盎绿.崇明东滩湿地营养盐与重金属的分布与累积[J].生态学报,2006(10)
[13]  Brevik EC ;Homburg JA,A 5000 year record of carbon sequestration from a coastal lagoon and wetland complex, Southern California, USA,Catena?,2004, 57(3).
[14]  Li Y L;Wang L;Zhang W Q,Variability of soil carbon sequestration capability and microbial activity of different types of salt marsh soils at Chongming Dongtan,Ecological Engineering,2010.
[15]  Zhang S P;Wang L;Hu J J,Organic carbon accumulation capability of two typical tidal wetland soils in Chongming Dongtan,China,Journal of Environmental Sciences-china,2011.
[16]  Choi Y;Wang Y;Hsieh Y P,Vegetation succession and carbon sequestration in a coastal wetland in northwest Florida:Evidence from carbon isotopes,Global Biogeochemical Cycles? ,2001, 15.
[17]  王卿,互花米草在上海崇明东滩的入侵历史、分布现状和扩张趋势的预测,长江流域资源与环境,2011(6).
[18]  Kirchman D L,The ecology of cytophaga-flavobacteria in aquatic environments,FEMS Microbiology Ecology,2002.
[19]  Christensen P J,The history and taxonomy of the Cytophaga group,Canadian Journal of Microbiology? ,1977, 23.
[20]  Alexander Eiler ;Silke Langenheder ;Stefan Bertilsson ;Lars J. Tranvik,Heterotrophic Bacterial Growth Efficiency and Community Structure at Different Natural Organic Carbon Concentrations,Applied and Environmental Microbiology?,2003, 69(7).
[21]  Lovell RD ;Jarvis SC ;Bardgett RD,SOIL MICROBIAL BIOMASS AND ACTIVITY IN LONG-TERM GRASSLAND - EFFECTS OF MANAGEMENT CHANGES,Soil Biology and Biochemistry?,1995, 27(7).
[22]  Kennedy A C;Papendick R I,Microbial characteristics of soil quality,Journal of Soil and Water Conservation,1995.
[23]  Smith J L;Paul E A,The significance of soil microbial biomass estimations,Soil Biochemistry,1990.
[24]  Schlesinger W H;Andrews J A,Soil respiration and the global carbon cycle,Biogeochemistry,2000.
[25]  Muyzer G;De Waal E C;Uitterlinden A G,Profiling of complex microbial populations by denaturing gradient gel electrophoresis analysis of polymerase chain reaction-amplified genes coding for 16S rRNA,Applied and Environmental Microbiology,1993.
[26]  陈金海;李艳丽;王磊.两种基于芦苇秸秆还田的改良措施对崇明东滩围垦土壤理化性质和微生物呼吸的影响[J].农业环境科学学报,2011(2)
[27]  范志平;王红;邓东周.土壤异养呼吸的测定及其温度敏感性影响因子[J].生态学杂志,2008(7)
[28]  蔡音婷;于晓静;马志军.鸟类调查的样线法和样点法比较:以崇明东滩春季盐沼鸟类调查为例[J].生物多样性,2010(1)
[29]  Raich J W;Potter C S,Global patterns of carbon dioxide emissions from soils,Global Biogeochemical Cycles,1995.

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