Soil organic matter fractions, chemical attributes and aggregation under forestry and agricultural systems

Silva, Cristiane Figueira da; Pereira, Marcos Gervasio; Feitosa, Júlio César Fernandes; Fonseca Júnior, Ariovaldo Machado; Gaia-Gomes, João Henrique; Menezes, Carlos Eduardo Gabriel

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dc.creator	Silva, Cristiane Figueira da
dc.creator	Pereira, Marcos Gervasio
dc.creator	Feitosa, Júlio César Fernandes
dc.creator	Fonseca Júnior, Ariovaldo Machado
dc.creator	Gaia-Gomes, João Henrique
dc.creator	Menezes, Carlos Eduardo Gabriel
dc.date	2018-04-11
dc.date.accessioned	2022-03-21T20:07:54Z
dc.date.available	2022-03-21T20:07:54Z
dc.identifier	https://comunicatascientiae.com.br/comunicata/article/view/1788
dc.identifier	10.14295/cs.v8i3.1788
dc.identifier.uri	http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/77856
dc.description	The aim of this work was to evaluate the influence of the conversion of forest systems to agricultural systems in the organic matter compartments, aggregation and soil chemical attributes, in the Atlantic Forest. The evaluated systems were: annual crop (ACr); perennial agriculture (PAg); pasture; and secondary forest early (SFES), medium (SFMS), and advanced stage (SFAS). Soil samples were collected at the layer of 0-5 cm depth and quantified the total organic carbon (TOC), C of humic substances, oxidizable C, granulometric fractions of soil organic matter (SOM), soil chemical attributes, soil aggregation and glomalin-related soil protein (GRSP-total and GRSP-easily extractable) in different aggregate classes. It was observed a reduction of the TOC, particulate organic carbon (POC), humic substances and oxidizable C in the PAg and ACr areas comparing to pasture and forest systems. Moreover, the pH values increased whereas P content decreased in comparison with SFAS. As for aggregation, the PAg and the ACr decreased by around 35% and 20% the mean weight diameter of aggregates, respectively, compared to the average values found in the forestry systems, and 34% and 45%, respectively in relation to pasture. In general, GRSP-total were reduced by agriculture. Thus, it appears that the agriculture which has been practiced is altering negatively the soil chemical, physical and biological attributes.	en-US
dc.description	The aim of this work was to evaluate the influence of the conversion of forest systems to agricultural systems in the organic matter compartments, aggregation and soil chemical attributes, in the Atlantic Forest. The evaluated systems were: annual crop (ACr); perennial agriculture (PAg); pasture; and secondary forest early (SFES), medium (SFMS), and advanced stage (SFAS). Soil samples were collected at the layer of 0-5 cm depth and quantified the total organic carbon (TOC), C of humic substances, oxidizable C, granulometric fractions of soil organic matter (SOM), soil chemical attributes, soil aggregation and glomalin-related soil protein (GRSP-total and GRSP-easily extractable) in different aggregate classes. It was observed a reduction of the TOC, particulate organic carbon (POC), humic substances and oxidizable C in the PAg and ACr areas comparing to pasture and forest systems. Moreover, the pH values increased whereas P content decreased in comparison with SFAS. As for aggregation, the PAg and the ACr decreased by around 35% and 20% the mean weight diameter of aggregates, respectively, compared to the average values found in the forestry systems, and 34% and 45%, respectively in relation to pasture. In general, GRSP-total were reduced by agriculture. Thus, it appears that the agriculture which has been practiced is altering negatively the soil chemical, physical and biological attributes.	pt-BR
dc.format	application/pdf
dc.language	eng
dc.publisher	Federal University of Piauí	en-US
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/1788/494
dc.rights	Copyright (c) 2018 Cristiane Figueira da Silva, Marcos Gervasio Pereira, Júlio César Fernandes Feitosa, Ariovaldo Machado Fonseca Júnior, João Henrique Gaia-Gomes, Carlos Eduardo Gabriel Menezes	en-US
dc.source	Comunicata Scientiae; Vol. 8 No. 3 (2017); 459-468	en-US
dc.source	Comunicata Scientiae; v. 8 n. 3 (2017); 459-468	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.subject	particulate organic carbon	en-US
dc.subject	oxidizable fractions	en-US
dc.subject	humic substances	en-US
dc.subject	glomalin	en-US
dc.subject	particulate organic carbon	pt-BR
dc.subject	oxidizable fractions	pt-BR
dc.subject	humic substances	pt-BR
dc.subject	glomalin	pt-BR
dc.title	Soil organic matter fractions, chemical attributes and aggregation under forestry and agricultural systems	en-US
dc.title	Soil organic matter fractions, chemical attributes and aggregation under forestry and agricultural systems	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion