J 2014

Karst soils: Dependence of CO2 concentrations on pore dimension

BLECHA, Martin and Jiří FAIMON

Basic information

Original name

Karst soils: Dependence of CO2 concentrations on pore dimension

Authors

BLECHA, Martin (203 Czech Republic, belonging to the institution) and Jiří FAIMON (203 Czech Republic, belonging to the institution)

Edition

Acta Carsologica, 2014, 0583-6050

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

Geochemistry

Country of publisher

Slovenia

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 0.451

RIV identification code

RIV/00216224:14310/14:00076752

Organization unit

Faculty of Science

UT WoS

000342408300005

Keywords in English

CO 2 Concentration Karst Rainfall Temperature Soil

Tags

Změněno: 9/4/2015 14:50, Ing. Andrea Mikešková

Abstract

V originále

CO2 concentrations were studied in the selected soils of the Moravian Karst, Czech Republic. The direct measurement in the air of drill-holes has indicated that the concentrations depend inversely on a pore dimension. The simplified relation between the drill-hole diameter and CO2 concentration, c0(CO2) = (c(CO2)- bD)/(1+aD) was proposed, where c0(CO2) is the CO2 concentration extrapolated to the zero drill-hole diameter in ppmv, c(CO2) is directly measured CO2 concentration in ppmv, and D is drillhole diameter in cm. a and b are parameters in cm-1 and ppmv cm-1, respectively. For the karst soils formed at grass field and deciduous forest, the values of a and b parameters were determined as -0.146±0.012 (standard error) cm-1 and 262.0±56.3 ppmv cm-1, respectively. The dependence between cco2 and D was less obvious for the heavy clay soils of coniferous forest. To understand the dependence better, a conceptual model was created taking into account the concentration gradients and mass fluxes.