Ammonia efflux affects accuracy of CO2 emission estimated by alkali-trap method

Werth, Martin and Zamanian, Kazem (2011) Ammonia efflux affects accuracy of CO2 emission estimated by alkali-trap method. In: Jahrestagung der DBG 2011: Böden verstehen - Böden nutzen - Böden fit machen, 03.-09.09.2011, Berlin.

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Abstract

The alkali-trap method (absorption of CO2 in NaOH solution and titration of the remaining NaOH with HCl) is frequently used to estimate soil CO2 emissions. With alkaline soils, however, it might be possible to underestimate soil CO2 emissions due to slight dissolution of ammonia into NaOH solution and production of extra OH- ions. So the main goals of this study were: - To investigate the dynamics of C and N emissions from soils under different land uses and climatic conditions with pH values from 7.5 to 8. - To examine the effects of ammonia on the results of alkali-trap method.

Item Type:	Conference or Workshop Item (Contribution to "Reports of the DBG")
Uncontrolled Keywords:	soil ammonia efflux, alkali-trap method, carbon dynamics, land use, organic matter decomposition
Divisions:	Kommissionen > Kommission I: Bodenphysik und Bodenhydrologie
Depositing User:	Martin Werth
Date Deposited:	24 Oct 2011 12:34
Last Modified:	13 Dec 2015 16:26
URI:	https://eprints.dbges.de/id/eprint/712

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