Factors influencing the calorespirometric ratios of soil microbial metabolism

被引：32
作者：
Barros, N. [1 ]
Hansen, L. D. [2 ]
Pineiro, V. [3 ]
Perez-Cruzado, C. [4 ]
Villanueva, M. [1 ]
Proupin, J. [1 ]
Rodriguez-Anon, J. A. [1 ]
机构：
[1] Univ Santiago de Compostela, Dept Appl Phys, Santiago De Compostela, Spain
[2] Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84602 USA
[3] Univ Santiago de Compostela, Elemental Anal Serv, RIAIDT, Lugo, Spain
[4] Univ Gottingen, Forest Inventory & Remote Sensing, D-37073 Gottingen, Germany
来源：
SOIL BIOLOGY & BIOCHEMISTRY | 2016年 / 92卷
关键词：
Calorespirometric ratios; SOM; Humidity; Soil fractions; Pasture; Forest age; ORGANIC-MATTER; HUMIC SUBSTANCES; CO2; CALORIMETRY; TEMPERATURE; ENERGETICS; EFFICIENCY; BIOMASS; GROWTH; RATES;
D O I：
10.1016/j.soilbio.2015.10.007
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
Calorespirometric ratio of metabolism connects the metabolic activity with the nature of the substrate and metabolic pathways being used by cells and microorganisms. Calorespirometric ratios have been determined for many living systems including animals, plants, plant and animal cells, and many different microorganisms, but application to soil is very recent. Calorespirometric ratios for soils are obtained by simultaneous calorimetric measurements of heat and CO2 rates from biodegradation of soil organic matter. The purpose here is to gain a better understanding of the factors influencing the value of the calorespirometric ratio in soil, i.e. changes in the composition of the soil organic matter, soil moisture, soil particle size, and soil management (e.g. conversion of pasture to forest). Results indicate that calorespirometric ratios are sensitive to moisture, soil size fraction, and the source and age of soil organic matter. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：221 / 229
页数：9
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