Biology and Fertility of Soils

, Volume 25, Issue 3, pp 269–273

Effect of soil CO2 concentration on microbial biomass

  • H. Šantrůčková
  • M. Šimek
ORIGINAL PAPER

DOI: 10.1007/s003740050313

Cite this article as:
Šantrůčková, H. & Šimek, M. Biol Fertil Soils (1997) 25: 269. doi:10.1007/s003740050313

Abstract

The effect of increasing soil CO2 concentration was studied in six different soils. The soils were incubated in ambient air (0.05 vol.% CO2) or in air enriched with CO2 (up to 5.0 vol.% CO2). Carbon dioxide evolution, microbial biomass, growth or death rate quotients and glucose decay rate were measured at 6, 12 and 24 h of CO2 exposure. The decrease in soil respiration ranged from 7% to 78% and was followed by a decrease in microbial biomass by 10–60% in most cases. High CO2 treatments did not affect glucose decay rate but the portion of Cgluc mineralized to CO2 was lowered and a larger portion of Cgluc remained in soils. This carbon was not utilized by soil microorganisms.

Key words Carbon dioxideMicrobial biomassMicrobial growthSoil respirationGlucosemineralization rateChloroform fumigation extraction method

Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • H. Šantrůčková
    • 1
  • M. Šimek
    • 1
  1. 1.Institute of Soil Biology, Academy of Sciences of the Czech Republic, and Faculty of Biological Sciences, University of South Bohemia, Na Sádkách 7, CZ-370 05 České Budějovice, Czech RepublicXX
  2. 2.Institute of Soil Biology, ASCR, Na Sádkách 7, CZ-370 05 České Budějovice, Czech Republic e-mail: hana@upb.cas.czXX