globalchange  > 气候减缓与适应
DOI: 10.1007/s10533-015-0176-2
Scopus记录号: 2-s2.0-84959479625
论文题名:
Temperature sensitivity of soil enzymes along an elevation gradient in the Peruvian Andes
作者: Nottingham A.T.; Turner B.L.; Whitaker J.; Ostle N.; Bardgett R.D.; McNamara N.P.; Salinas N.; Meir P.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2016
卷: 127, 期:2018-02-03
起始页码: 217
结束页码: 230
语种: 英语
英文关键词: Q10 values ; Soil carbon ; Tropical montane forest ; β-glucosidase ; β-xylanase
Scopus关键词: carbon cycle ; elevation ; environmental gradient ; enzyme activity ; montane forest ; phenolic compound ; soil carbon ; soil chemistry ; soil property ; temperature effect ; tropical environment ; Andes ; Peru
英文摘要: Soil enzymes are catalysts of organic matter depolymerisation, which is of critical importance for ecosystem carbon (C) cycling. Better understanding of the sensitivity of enzymes to temperature will enable improved predictions of climate change impacts on soil C stocks. These impacts may be especially large in tropical montane forests, which contain large amounts of soil C. We determined the temperature sensitivity (Q10) of a range of hydrolytic and oxidative enzymes involved in organic matter cycling from soils along a 1900 m elevation gradient (a 10 °C mean annual temperature gradient) of tropical montane forest in the Peruvian Andes. We investigated whether the activity (Vmax) of selected enzymes: (i) exhibited a Q10 that varied with elevation and/or soil properties; and (ii) varied among enzymes and according to the complexity of the target substrate for C-degrading enzymes. The Q10 of Vmax for β-glucosidase and β-xylanase increased with increasing elevation and declining mean annual temperature. For all other enzymes, including cellobiohydrolase, N-acetyl β-glucosaminidase and phosphomonoesterase, the Q10 of Vmax did not vary linearly with elevation. Hydrolytic enzymes that degrade more complex C compounds had a greater Q10 of Vmax, but this pattern did not apply to oxidative enzymes because phenol oxidase had the lowest Q10 value of all enzymes studied here. Our findings suggest that regional differences in the temperature sensitivities of different enzyme classes may influence the terrestrial C cycle under future climate warming. © 2016, The Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83421
Appears in Collections:气候减缓与适应
气候变化事实与影响

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作者单位: School of Geosciences, University of Edinburgh, Drummond Street, Edinburgh, United Kingdom; Smithsonian Tropical Research Institute, Apartado, Balboa, Ancon, Panama; Geography Building Drummond Street, Edinburgh, United Kingdom; Centre for Ecology & Hydrology, Lancaster Environment Centre, Library Avenue, Lancaster, United Kingdom; Lancaster Environment Centre, University of Lancaster, Library Avenue, Lancaster, United Kingdom; Michael Smith Building, The University of Manchester, Oxford Road, Manchester, United Kingdom; Seccion Química, Pontificia Universidad Católica del Peru, Lima, Peru; Environmental Change Institute, School of Geography and the Environment, South Parks Road, Oxford, United Kingdom; Research School of Biology, Australian National University, Canberra, ACT, Australia

Recommended Citation:
Nottingham A.T.,Turner B.L.,Whitaker J.,et al. Temperature sensitivity of soil enzymes along an elevation gradient in the Peruvian Andes[J]. Biogeochemistry,2016-01-01,127(2018-02-03)
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