Soil Organic Matter Responses to Anthropogenic Forest Disturbance and Land Use Change in the Eastern Brazilian Amazon

Durigan, Mariana Regina; Cherubin, Maurício Roberto; Camargo, Plínio Barbosa de; Ferreira, Joice Nunes; Berenguer, Erika; Gardner, Toby Alan; Barlow, Jos; Dias, Carlos Tadeu dos Santos; Signor, Diana; Oliveira Junior, Raimundo Cosme de; Cerri, Carlos Eduardo Pellegrino

Artigo

Soil Organic Matter Responses to Anthropogenic Forest Disturbance and Land Use Change in the Eastern Brazilian Amazon

Anthropogenic forest disturbance and land use change (LUC) in the Amazon region is the main source of greenhouse gas emissions to the atmosphere in Brazil, due to the carbon (C) and nitrogen (N) emitted from vegetation clearance. Land use conversion associated with management practices plays a ke...

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Autor principal:	Durigan, Mariana Regina
Outros Autores:	Cherubin, Maurício Roberto, Camargo, Plínio Barbosa de, Ferreira, Joice Nunes, Berenguer, Erika, Gardner, Toby Alan, Barlow, Jos, Dias, Carlos Tadeu dos Santos, Signor, Diana, Oliveira Junior, Raimundo Cosme de, Cerri, Carlos Eduardo Pellegrino
Grau:	Artigo
Idioma:	eng
Publicado em:	Museu Paraense Emilio Goeldi 2018
Assuntos:	tropical forests pasture cropland soil carbon stable isotopes SOM physical fractions CNPQ::CIENCIAS BIOLOGICAS
Acesso em linha:	http://repositorio.museu-goeldi.br/handle/mgoeldi/1246

id	ir-mgoeldi-1246
recordtype	dspace
spelling	ir-mgoeldi-12462019-07-17T18:12:43Z Soil Organic Matter Responses to Anthropogenic Forest Disturbance and Land Use Change in the Eastern Brazilian Amazon Respostas da matéria orgânica do solo à antropogênese Perturbação da Floresta e Mudança no Uso da Terra no Amazônia Oriental Brasileira Durigan, Mariana Regina Cherubin, Maurício Roberto Camargo, Plínio Barbosa de Ferreira, Joice Nunes Berenguer, Erika Gardner, Toby Alan Barlow, Jos Dias, Carlos Tadeu dos Santos Signor, Diana Oliveira Junior, Raimundo Cosme de Cerri, Carlos Eduardo Pellegrino tropical forests pasture cropland soil carbon stable isotopes SOM physical fractions CNPQ::CIENCIAS BIOLOGICAS Anthropogenic forest disturbance and land use change (LUC) in the Amazon region is the main source of greenhouse gas emissions to the atmosphere in Brazil, due to the carbon (C) and nitrogen (N) emitted from vegetation clearance. Land use conversion associated with management practices plays a key role in the distribution and origin of C in different soil organic matter (SOM) fractions. Here, we show how changing land use systems have influenced soil C and N stocks, SOM physical fractions, and the origin of SOM in the Santarém region of the eastern Brazilian Amazon. Soil C and N stocks were calculated for the surface layer of 0–30 cm. Anthropogenic disturbances to the standing forest, such as selective logging and wildfires, led to significant declines in soil C and N stocks. However, in the long-term, the conversion of the Amazon forest to pasture did not have a noticeable effect on soil C and N stocks, presumably because of additional inputs from pasture grasses. However, the conversion to cropland did lead to reductions in soil C and N content. According to the physical fractionation of SOM, LUC altered SOM quality, but silt and clay remained the combined fraction that contributed the most to soil C storage. Our results emphasize the importance of implementing more sustainable forest management systems, whilst also calling further attention to the need for fire monitoring systems, helping to ensure the resilience of C and N stocks and sequestration in forest soils; thereby contributing towards urgently needed ongoing efforts to mitigate climate change. A perturbação florestal antropogênica e a mudança no uso da terra(LUC) na região amazônica são principal fonte de emissões de gases de efeito estufa para a atmosfera no Brasil, devido ao carbono (C)e nitrogênio (N) emitido da limpeza da vegetação. Conversão de uso da terra associada à gestão práticas desempenham um papel fundamental na distribuição e origem de C em diferentes matérias orgânicas do solo (MOS)frações. Aqui, mostramos como a mudança nos sistemas de uso da terra tem influenciado os estoques de C e N do solo,Frações físicas da OMS e a origem da MOS na região de Santarém, no leste brasileiro Amazônia Os estoques de solo C e N foram calculados para a camada superficial de 0 a 30 cm. Antropogênico distúrbios na floresta em pé, como a extração seletiva de madeira e os incêndios florestais, levaram a declínios significativos em estoques de C e N no solo. No entanto, a longo prazo, a conversão da floresta amazônica para pastagem não teve um efeito perceptível nos estoques de C e N do solo, presumivelmente por causa de de pastagens. No entanto, a conversão para terras de cultivo levou a reduções no solo C e N conteúdo. De acordo com o fracionamento físico da MOS, a LUC alterou a qualidade da MOS, mas silte e argila permaneceu a fração combinada que mais contribuiu para o armazenamento de solo C. Nossos resultados enfatizam a importância de implementar sistemas de manejo florestal mais sustentáveis, ao mesmo mais atenção à necessidade de sistemas de monitoramento de incêndio, ajudando a assegurar a resiliência de C e Estoque e seqüestro de N em solos florestais; contribuindo assim para a necessidade urgente de esforços para mitigar a mudança climática. 2018-07-06T13:16:52Z 2018-06-28 2018-07-06T13:16:52Z 2017-02-21 Artigo de Periódico http://repositorio.museu-goeldi.br/handle/mgoeldi/1246 eng Sustainability Acesso Aberto application/pdf Museu Paraense Emilio Goeldi Brasil MPEG
institution	Repositório Institucional - Museu Paraense Emílio Goeldi
collection	RepositorioEmilioGoeldi
language	eng
topic	tropical forests pasture cropland soil carbon stable isotopes SOM physical fractions CNPQ::CIENCIAS BIOLOGICAS
spellingShingle	tropical forests pasture cropland soil carbon stable isotopes SOM physical fractions CNPQ::CIENCIAS BIOLOGICAS Durigan, Mariana Regina Soil Organic Matter Responses to Anthropogenic Forest Disturbance and Land Use Change in the Eastern Brazilian Amazon
topic_facet	tropical forests pasture cropland soil carbon stable isotopes SOM physical fractions CNPQ::CIENCIAS BIOLOGICAS
description	Anthropogenic forest disturbance and land use change (LUC) in the Amazon region is the main source of greenhouse gas emissions to the atmosphere in Brazil, due to the carbon (C) and nitrogen (N) emitted from vegetation clearance. Land use conversion associated with management practices plays a key role in the distribution and origin of C in different soil organic matter (SOM) fractions. Here, we show how changing land use systems have influenced soil C and N stocks, SOM physical fractions, and the origin of SOM in the Santarém region of the eastern Brazilian Amazon. Soil C and N stocks were calculated for the surface layer of 0–30 cm. Anthropogenic disturbances to the standing forest, such as selective logging and wildfires, led to significant declines in soil C and N stocks. However, in the long-term, the conversion of the Amazon forest to pasture did not have a noticeable effect on soil C and N stocks, presumably because of additional inputs from pasture grasses. However, the conversion to cropland did lead to reductions in soil C and N content. According to the physical fractionation of SOM, LUC altered SOM quality, but silt and clay remained the combined fraction that contributed the most to soil C storage. Our results emphasize the importance of implementing more sustainable forest management systems, whilst also calling further attention to the need for fire monitoring systems, helping to ensure the resilience of C and N stocks and sequestration in forest soils; thereby contributing towards urgently needed ongoing efforts to mitigate climate change.
format	Artigo
author	Durigan, Mariana Regina
author2	Cherubin, Maurício Roberto Camargo, Plínio Barbosa de Ferreira, Joice Nunes Berenguer, Erika Gardner, Toby Alan Barlow, Jos Dias, Carlos Tadeu dos Santos Signor, Diana Oliveira Junior, Raimundo Cosme de Cerri, Carlos Eduardo Pellegrino
author2Str	Cherubin, Maurício Roberto Camargo, Plínio Barbosa de Ferreira, Joice Nunes Berenguer, Erika Gardner, Toby Alan Barlow, Jos Dias, Carlos Tadeu dos Santos Signor, Diana Oliveira Junior, Raimundo Cosme de Cerri, Carlos Eduardo Pellegrino
title	Soil Organic Matter Responses to Anthropogenic Forest Disturbance and Land Use Change in the Eastern Brazilian Amazon
title_short	Soil Organic Matter Responses to Anthropogenic Forest Disturbance and Land Use Change in the Eastern Brazilian Amazon
title_full	Soil Organic Matter Responses to Anthropogenic Forest Disturbance and Land Use Change in the Eastern Brazilian Amazon
title_fullStr	Soil Organic Matter Responses to Anthropogenic Forest Disturbance and Land Use Change in the Eastern Brazilian Amazon
title_full_unstemmed	Soil Organic Matter Responses to Anthropogenic Forest Disturbance and Land Use Change in the Eastern Brazilian Amazon
title_sort	soil organic matter responses to anthropogenic forest disturbance and land use change in the eastern brazilian amazon
publisher	Museu Paraense Emilio Goeldi
publishDate	2018
url	http://repositorio.museu-goeldi.br/handle/mgoeldi/1246
_version_	1787135863437656064
score	11.755432

Soil Organic Matter Responses to Anthropogenic Forest Disturbance and Land Use Change in the Eastern Brazilian Amazon

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