Quantitative differentiation between soil organic carbon and biochar carbon in Aridisol

N. Lara, L. Figueroa, F. Carvajal, Y. Zapata, C. Urbina, and H. Escobar. 2013. Quantitative differentiation between soil organic carbon and biochar carbon in Aridisol. Cien. Inv. Agr. 40(2): 387-395. To understand the effect of biochar, identify its presence and quantify its stability in soil, it is...

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Autores principales:	Lara,Nelson, Figueroa,Leonardo, Carvajal,Fabiola, Zapata,Yubinza, Urbina,Camilo, Escobar,Hugo
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2013
Materias:	Alkaline extraction differentiate humic acid organic carbon
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200013
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spelling	oai:scielo:S0718-162020130002000132013-10-23Quantitative differentiation between soil organic carbon and biochar carbon in AridisolLara,NelsonFigueroa,LeonardoCarvajal,FabiolaZapata,YubinzaUrbina,CamiloEscobar,Hugo Alkaline extraction differentiate humic acid organic carbon N. Lara, L. Figueroa, F. Carvajal, Y. Zapata, C. Urbina, and H. Escobar. 2013. Quantitative differentiation between soil organic carbon and biochar carbon in Aridisol. Cien. Inv. Agr. 40(2): 387-395. To understand the effect of biochar, identify its presence and quantify its stability in soil, it is necessary to differentiate between the two main sources of carbon. These sources are resident soil organic matter and biochar, which is produced by burning organic matter under low oxygen concentration in a process known as pyrolysis. The present study employs solid-liquid extraction with an alkaline solution, the efficiency of which was improved by a reflux system and quantification using the modified Walkley-Black method, to distinguish the two carbon sources in samples of arid soils from the area surrounding the city of Arica, XV region of Chile. The mean annual precipitation of this area is less than 0.4 mm, and its soils are characterized by high salinity, low organic matter content, high porosity and low bulk density. The values for total extracted organic carbon obtained using this method were very similar to those for the resident soil organic carbon, indicating that the technique extracts mostly resident soil organic carbon and not biochar carbon. Biochar carbon represented less than 6% of the total organic carbon extracted by the method. The results demonstrate that this method can quantitatively differentiate between resident total organic carbon and applied biochar carbon. The method thus represents a valuable alternative to the use of an elemental analyzer.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.40 n.2 20132013-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200013en10.4067/S0718-16202013000200013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Alkaline extraction differentiate humic acid organic carbon
spellingShingle	Alkaline extraction differentiate humic acid organic carbon Lara,Nelson Figueroa,Leonardo Carvajal,Fabiola Zapata,Yubinza Urbina,Camilo Escobar,Hugo Quantitative differentiation between soil organic carbon and biochar carbon in Aridisol
description	N. Lara, L. Figueroa, F. Carvajal, Y. Zapata, C. Urbina, and H. Escobar. 2013. Quantitative differentiation between soil organic carbon and biochar carbon in Aridisol. Cien. Inv. Agr. 40(2): 387-395. To understand the effect of biochar, identify its presence and quantify its stability in soil, it is necessary to differentiate between the two main sources of carbon. These sources are resident soil organic matter and biochar, which is produced by burning organic matter under low oxygen concentration in a process known as pyrolysis. The present study employs solid-liquid extraction with an alkaline solution, the efficiency of which was improved by a reflux system and quantification using the modified Walkley-Black method, to distinguish the two carbon sources in samples of arid soils from the area surrounding the city of Arica, XV region of Chile. The mean annual precipitation of this area is less than 0.4 mm, and its soils are characterized by high salinity, low organic matter content, high porosity and low bulk density. The values for total extracted organic carbon obtained using this method were very similar to those for the resident soil organic carbon, indicating that the technique extracts mostly resident soil organic carbon and not biochar carbon. Biochar carbon represented less than 6% of the total organic carbon extracted by the method. The results demonstrate that this method can quantitatively differentiate between resident total organic carbon and applied biochar carbon. The method thus represents a valuable alternative to the use of an elemental analyzer.
author	Lara,Nelson Figueroa,Leonardo Carvajal,Fabiola Zapata,Yubinza Urbina,Camilo Escobar,Hugo
author_facet	Lara,Nelson Figueroa,Leonardo Carvajal,Fabiola Zapata,Yubinza Urbina,Camilo Escobar,Hugo
author_sort	Lara,Nelson
title	Quantitative differentiation between soil organic carbon and biochar carbon in Aridisol
title_short	Quantitative differentiation between soil organic carbon and biochar carbon in Aridisol
title_full	Quantitative differentiation between soil organic carbon and biochar carbon in Aridisol
title_fullStr	Quantitative differentiation between soil organic carbon and biochar carbon in Aridisol
title_full_unstemmed	Quantitative differentiation between soil organic carbon and biochar carbon in Aridisol
title_sort	quantitative differentiation between soil organic carbon and biochar carbon in aridisol
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200013
work_keys_str_mv	AT laranelson quantitativedifferentiationbetweensoilorganiccarbonandbiocharcarboninaridisol AT figueroaleonardo quantitativedifferentiationbetweensoilorganiccarbonandbiocharcarboninaridisol AT carvajalfabiola quantitativedifferentiationbetweensoilorganiccarbonandbiocharcarboninaridisol AT zapatayubinza quantitativedifferentiationbetweensoilorganiccarbonandbiocharcarboninaridisol AT urbinacamilo quantitativedifferentiationbetweensoilorganiccarbonandbiocharcarboninaridisol AT escobarhugo quantitativedifferentiationbetweensoilorganiccarbonandbiocharcarboninaridisol
_version_	1714202150250217472

Quantitative differentiation between soil organic carbon and biochar carbon in Aridisol

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