The source of microbial C has little impact on soil organic matter stabilisation in forest ecosystems

被引：87
作者：
Throckmorton, Heather M. [1 ]
Bird, Jeffrey A. [3 ]
Dane, Laura [2 ]
Firestone, Mary K. [2 ]
Horwath, William R. [1 ]
机构：
[1] Univ Calif Davis, Davis, CA 95616 USA
[2] Univ Calif Berkeley, Berkeley, CA 94720 USA
[3] CUNY Queens Coll, CUNY Grad Ctr, New York, NY 10021 USA
来源：
ECOLOGY LETTERS | 2012年 / 15卷 / 11期
关键词：
Bacteria; carbon; fungi; decomposition; microbial; mineralisation; nutrient cycling; stabilisation; soil; soil organic matter; LEAF-LITTER DECOMPOSITION; PLANT; BIOMASS; ROOT; COMMUNITIES; CHEMISTRY; TURNOVER; POLYMERS; DYNAMICS; PATTERNS;
D O I：
10.1111/j.1461-0248.2012.01848.x
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
The source of microbial C is thought to impact its stability in soil due to variations in cellular biochemistry. It has been hypothesised that a fungal-dominated community stabilises more C than a bacterial-dominated community, in part due to chemical recalcitrance of their non-living biomass, particularly cell wall components and pigments. We compared the turnover of 13C-labelled (99.9 atom %) temperate and tropical microbial isolates [i.e. fungi, Gram-positive bacteria (including actinobacteria) and Gram-negative bacteria] in temperate (California) and tropical (Puerto Rico) forest soils. While significant differences in 13C recovery and mean residence times occurred among some microbial additions, similar turnover rates were observed, and in general, results do not support the view that microbial biochemistry affects soil C maintenance. Different effects by microbial necromass additions in California and Puerto Rico suggest that ecosystem-specific effects may be as important to microbial C stabilisation as its macromolecular composition and recalcitrance.
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收藏
页码：1257 / 1265
页数：9
相关论文
共 51 条
[1]   Climate, leaf litter chemistry and leaf litter decomposition in terrestrial ecosystems: A triangular relationship [J].
Aerts, R .
OIKOS, 1997, 79 (03) :439-449
[2]   Home-field advantage accelerates leaf litter decomposition in forests [J].
Ayres, Edward ;
Steltzer, Heidi ;
Simmons, Breana L. ;
Simpson, Rodney T. ;
Steinweg, J. Megan ;
Wallenstein, Matthew D. ;
Mellor, Nate ;
Parton, William J. ;
Moore, John C. ;
Wall, Diana H. .
SOIL BIOLOGY & BIOCHEMISTRY, 2009, 41 (03) :606-610
[3]   Fungal-to-bacterial ratios in soils investigated for enhanced C sequestration [J].
Bailey, VL ;
Smith, JL ;
Bolton, H .
SOIL BIOLOGY & BIOCHEMISTRY, 2002, 34 (07) :997-1007
[4]  
Balesdent J., 1996, Mass spectrometry of soils., P83
[5]   Investigating biological control over soil carbon temperature sensitivity [J].
Balser, Teri C. ;
Wixon, Devin L. .
GLOBAL CHANGE BIOLOGY, 2009, 15 (12) :2935-2949
[6]   Fine roots vs. Needles:: A comparison of 13C and 15N dynamics in a ponderosa pine forest soil [J].
Bird, Jeffrey A. ;
Torn, Margaret S. .
BIOGEOCHEMISTRY, 2006, 79 (03) :361-382
[7]   Rhizosphere priming of soil organic matter by bacterial groups in a grassland soil [J].
Bird, Jeffrey A. ;
Herman, Donald J. ;
Firestone, Mary K. .
SOIL BIOLOGY & BIOCHEMISTRY, 2011, 43 (04) :718-725
[8]  
BOON JJ, 1981, J GEN MICROBIOL, V122, P119
[9]   ALKALINE PERSULFATE OXIDATION FOR DETERMINING TOTAL NITROGEN IN MICROBIAL BIOMASS EXTRACTS [J].
CABRERA, ML ;
BEARE, MH .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1993, 57 (04) :1007-1012
[10]   Controls on long-term root and leaf litter decomposition in neotropical forests [J].
Cusack, Daniela F. ;
Chou, Wendy W. ;
Yang, Wendy H. ;
Harmon, Mark E. ;
Silver, Whendee L. .
GLOBAL CHANGE BIOLOGY, 2009, 15 (05) :1339-1355
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