Fallow Reduces Soil Losses and Increases Carbon Stock in Caatinga

Fallow Reduces Soil Losses and Increases Carbon Stock in Caatinga

ABSTRACT This study aimed at evaluating whether 10 years of fallow was sufficient to restore a degraded hillslope in the semi-arid Caatinga biome, Brazil. For this purpose, runoff, erosion, loss of nutrients and organic carbon were measured on two comparable hillslopes: one was left fallow and the other degraded caused by overgrazing. Fallow management reduced runoff (36%), soil loss (65%) and organic carbon loss (81%) in comparison with the degraded hillslope. However, the fallow did not significantly reduce nutrient loss. Animal grazing has been shown to influence the nutrient cycle in the soil. The loss of organic carbon shows significant correlation with the loss of other nutrients, and may be used to estimate nutrient loss. Results show that a decade of fallow did not promote significant changes in the loss of nutrients, but was enough to reduce runoff, erosion and loss of organic carbon.

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Main Authors: Almeida,Cicero Lima de, Araújo,José Carlos de, Costa,Mirian Cristina Gomes, Almeida,Aldênia Mendes Mascena de, Andrade,Eunice Maia de
Format: Digital revista
Language:English
Published: Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro 2017
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-80872017000100142
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spelling oai:scielo:S2179-808720170001001422017-04-24Fallow Reduces Soil Losses and Increases Carbon Stock in CaatingaAlmeida,Cicero Lima deAraújo,José Carlos deCosta,Mirian Cristina GomesAlmeida,Aldênia Mendes Mascena deAndrade,Eunice Maia de soil recovery land use runoff semi-arid ABSTRACT This study aimed at evaluating whether 10 years of fallow was sufficient to restore a degraded hillslope in the semi-arid Caatinga biome, Brazil. For this purpose, runoff, erosion, loss of nutrients and organic carbon were measured on two comparable hillslopes: one was left fallow and the other degraded caused by overgrazing. Fallow management reduced runoff (36%), soil loss (65%) and organic carbon loss (81%) in comparison with the degraded hillslope. However, the fallow did not significantly reduce nutrient loss. Animal grazing has been shown to influence the nutrient cycle in the soil. The loss of organic carbon shows significant correlation with the loss of other nutrients, and may be used to estimate nutrient loss. Results show that a decade of fallow did not promote significant changes in the loss of nutrients, but was enough to reduce runoff, erosion and loss of organic carbon.info:eu-repo/semantics/openAccessInstituto de Florestas da Universidade Federal Rural do Rio de JaneiroFloresta e Ambiente v.24 20172017-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-80872017000100142en10.1590/2179-8087.017516
institution SCIELO
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country Brasil
countrycode BR
component Revista
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databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Almeida,Cicero Lima de
Araújo,José Carlos de
Costa,Mirian Cristina Gomes
Almeida,Aldênia Mendes Mascena de
Andrade,Eunice Maia de
spellingShingle Almeida,Cicero Lima de
Araújo,José Carlos de
Costa,Mirian Cristina Gomes
Almeida,Aldênia Mendes Mascena de
Andrade,Eunice Maia de
Fallow Reduces Soil Losses and Increases Carbon Stock in Caatinga
author_facet Almeida,Cicero Lima de
Araújo,José Carlos de
Costa,Mirian Cristina Gomes
Almeida,Aldênia Mendes Mascena de
Andrade,Eunice Maia de
author_sort Almeida,Cicero Lima de
title Fallow Reduces Soil Losses and Increases Carbon Stock in Caatinga
title_short Fallow Reduces Soil Losses and Increases Carbon Stock in Caatinga
title_full Fallow Reduces Soil Losses and Increases Carbon Stock in Caatinga
title_fullStr Fallow Reduces Soil Losses and Increases Carbon Stock in Caatinga
title_full_unstemmed Fallow Reduces Soil Losses and Increases Carbon Stock in Caatinga
title_sort fallow reduces soil losses and increases carbon stock in caatinga
description ABSTRACT This study aimed at evaluating whether 10 years of fallow was sufficient to restore a degraded hillslope in the semi-arid Caatinga biome, Brazil. For this purpose, runoff, erosion, loss of nutrients and organic carbon were measured on two comparable hillslopes: one was left fallow and the other degraded caused by overgrazing. Fallow management reduced runoff (36%), soil loss (65%) and organic carbon loss (81%) in comparison with the degraded hillslope. However, the fallow did not significantly reduce nutrient loss. Animal grazing has been shown to influence the nutrient cycle in the soil. The loss of organic carbon shows significant correlation with the loss of other nutrients, and may be used to estimate nutrient loss. Results show that a decade of fallow did not promote significant changes in the loss of nutrients, but was enough to reduce runoff, erosion and loss of organic carbon.
publisher Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro
publishDate 2017
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-80872017000100142
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