Effect of soil CO2 concentration on microbial biomass |
| |
| Authors: | H ?antr??ková M ?imek |
| |
| Institution: | (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 Republic, XX;(2) Institute of Soil Biology, ASCR, Na Sádkách 7, CZ-370 05 České Budějovice, Czech Republic e-mail: hana@upb.cas.cz, XX |
| |
| 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.
Received: 30 August 1996 |
| |
| Keywords: | Carbon dioxide Microbial biomass Microbial growth Soil respiration Glucose mineralization rate Chloroform fumigation extraction method |
| 本文献已被 SpringerLink 等数据库收录！ |
|
