Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forests

ABSTRACT Non-systemic logging, cattle browsing and grazing with the site natural vegetation can modify tree covers in native forests and alter the quantity and quality of organic matter entering the soil and hence its overall quality. The objective of this study was to evaluate the effect of modifyi...

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Autores principales:	Alfaro,Marianela, Dube,Francis, Zagal,Erick
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2018
Materias:	Andisol disturbed forest Nothofagus obliqua soil quality temperate forest tree covers
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000100106
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spelling	oai:scielo:S0718-583920180001001062018-04-25Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forestsAlfaro,MarianelaDube,FrancisZagal,Erick Andisol disturbed forest Nothofagus obliqua soil quality temperate forest tree covers ABSTRACT Non-systemic logging, cattle browsing and grazing with the site natural vegetation can modify tree covers in native forests and alter the quantity and quality of organic matter entering the soil and hence its overall quality. The objective of this study was to evaluate the effect of modifying tree covers by uncontrolled logging and grazing processes on soil quality, in a mature and unmanaged roble (Nothofagus obliqua (Mirb.) Blume) forest. Soil quality was evaluated under partly-closed (PC), partly-open (PO), and open (OP) forest covers, and two soil depths. The indicators used were soil organic C (SOC), potential net N mineralization (N-min), and nitrification (N-NO3), soil microbial respiration (SMR), microbial biomass C (MBC), soil aggregates, and light fraction (LF). At 0-5 cm soil depth SMR and MBC in PC cover was approximately 12% higher than in PO and OP covers. For the same soil depth N-min in PC cover was 68% and 95% higher than in PO and OP covers, respectively; and for N-NO3 PC cover was 45% higher than PO cover. OP tree cover presented a negative N-NO3 (immobilization). Dry weight for LF fraction in OP cover (labile OM) was 90% and 67% lower respect PC and PO covers, respectively (P < 0.05). The soil quality and the activity of its microbial processes were affected by alteration of tree cover, as well by the anthropic action of logging and extensive grazing, the soil in OP cover was the most affected.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.78 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000100106en10.4067/S0718-58392018000100106
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Andisol disturbed forest Nothofagus obliqua soil quality temperate forest tree covers
spellingShingle	Andisol disturbed forest Nothofagus obliqua soil quality temperate forest tree covers Alfaro,Marianela Dube,Francis Zagal,Erick Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forests
description	ABSTRACT Non-systemic logging, cattle browsing and grazing with the site natural vegetation can modify tree covers in native forests and alter the quantity and quality of organic matter entering the soil and hence its overall quality. The objective of this study was to evaluate the effect of modifying tree covers by uncontrolled logging and grazing processes on soil quality, in a mature and unmanaged roble (Nothofagus obliqua (Mirb.) Blume) forest. Soil quality was evaluated under partly-closed (PC), partly-open (PO), and open (OP) forest covers, and two soil depths. The indicators used were soil organic C (SOC), potential net N mineralization (N-min), and nitrification (N-NO3), soil microbial respiration (SMR), microbial biomass C (MBC), soil aggregates, and light fraction (LF). At 0-5 cm soil depth SMR and MBC in PC cover was approximately 12% higher than in PO and OP covers. For the same soil depth N-min in PC cover was 68% and 95% higher than in PO and OP covers, respectively; and for N-NO3 PC cover was 45% higher than PO cover. OP tree cover presented a negative N-NO3 (immobilization). Dry weight for LF fraction in OP cover (labile OM) was 90% and 67% lower respect PC and PO covers, respectively (P < 0.05). The soil quality and the activity of its microbial processes were affected by alteration of tree cover, as well by the anthropic action of logging and extensive grazing, the soil in OP cover was the most affected.
author	Alfaro,Marianela Dube,Francis Zagal,Erick
author_facet	Alfaro,Marianela Dube,Francis Zagal,Erick
author_sort	Alfaro,Marianela
title	Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forests
title_short	Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forests
title_full	Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forests
title_fullStr	Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forests
title_full_unstemmed	Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forests
title_sort	soil quality indicators in an andisol under different tree covers in disturbed nothofagus forests
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000100106
work_keys_str_mv	AT alfaromarianela soilqualityindicatorsinanandisolunderdifferenttreecoversindisturbednothofagusforests AT dubefrancis soilqualityindicatorsinanandisolunderdifferenttreecoversindisturbednothofagusforests AT zagalerick soilqualityindicatorsinanandisolunderdifferenttreecoversindisturbednothofagusforests
_version_	1714205376230981632

Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forests

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