CUT CYCLES AND SOIL CARBON POTENTIAL STOCKS IN A MANAGED FOREST IN THE CAATINGA DOMAIN IN BRAZIL

ABSTRACT Management of tropical dry forests in Brazil expanded 450% in the two latest decades; but little is known about the dynamics of these areas. Thus, the objective of this work was to evaluate if the recovery of mean original biomass stocks (MOBS) is a consistent criterion to define cut cycles in a managed forest for charcoal production, and determine the remaining biomass and its contribution to soil carbon stocks. The study was conducted at the Ramalhete Settlement, in General Sampaio, CE, Brazil, in 2018. The explorable shrubby-arboreous biomass (ESAB) and the ESAB mean annual increases (ESAB -MAI) were determined in five areas subjected to clearcutting after 3, 5, 8, 11, and 15 years, and in a preservation area with 40 years of regeneration. Each area was divided into seven plots (20 × 20 m), totaling 42 plots. The ESAB of the plots were compared and the remaining biomass (branches, stumps, and litterfall) in a recently explored area was calculated and converted into organic carbon. The remaining biomass of branches had higher contribution to soil carbon stocks, followed by the litterfall, and stumps. The carbon stocks of the branch component were 3.4-fold higher than those of the litterfall. The recovery of the MOBS of an area after clearcutting should not be used as a criterion to define the cut cycle, since these original carbon stocks do not represent the maximum ESAB production possible in the area; the biodiversity and amount of ESAB in the classes of larger diameter are more adequate criteria.

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Main Authors: LOPES,JOSÉ FRÉDSON BEZERRA, ANDRADE,EUNICE MAIA DE, PEREIRA,ERICH CELESTINO BRAGA, CAMPOS,DIEGO ANTUNES, AQUINO,DEODATO DO NASCIMENTO
Format: Digital revista
Language:English
Published: Universidade Federal Rural do Semi-Árido 2020
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-21252020000300735
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spelling oai:scielo:S1983-212520200003007352020-09-09CUT CYCLES AND SOIL CARBON POTENTIAL STOCKS IN A MANAGED FOREST IN THE CAATINGA DOMAIN IN BRAZILLOPES,JOSÉ FRÉDSON BEZERRAANDRADE,EUNICE MAIA DEPEREIRA,ERICH CELESTINO BRAGACAMPOS,DIEGO ANTUNESAQUINO,DEODATO DO NASCIMENTO Tropical dry forest Caatinga phytogeographic domain Plant biomass Regeneration Forest residues ABSTRACT Management of tropical dry forests in Brazil expanded 450% in the two latest decades; but little is known about the dynamics of these areas. Thus, the objective of this work was to evaluate if the recovery of mean original biomass stocks (MOBS) is a consistent criterion to define cut cycles in a managed forest for charcoal production, and determine the remaining biomass and its contribution to soil carbon stocks. The study was conducted at the Ramalhete Settlement, in General Sampaio, CE, Brazil, in 2018. The explorable shrubby-arboreous biomass (ESAB) and the ESAB mean annual increases (ESAB -MAI) were determined in five areas subjected to clearcutting after 3, 5, 8, 11, and 15 years, and in a preservation area with 40 years of regeneration. Each area was divided into seven plots (20 × 20 m), totaling 42 plots. The ESAB of the plots were compared and the remaining biomass (branches, stumps, and litterfall) in a recently explored area was calculated and converted into organic carbon. The remaining biomass of branches had higher contribution to soil carbon stocks, followed by the litterfall, and stumps. The carbon stocks of the branch component were 3.4-fold higher than those of the litterfall. The recovery of the MOBS of an area after clearcutting should not be used as a criterion to define the cut cycle, since these original carbon stocks do not represent the maximum ESAB production possible in the area; the biodiversity and amount of ESAB in the classes of larger diameter are more adequate criteria.info:eu-repo/semantics/openAccessUniversidade Federal Rural do Semi-ÁridoRevista Caatinga v.33 n.3 20202020-09-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-21252020000300735en10.1590/1983-21252020v33n317rc
institution SCIELO
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countrycode BR
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language English
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author LOPES,JOSÉ FRÉDSON BEZERRA
ANDRADE,EUNICE MAIA DE
PEREIRA,ERICH CELESTINO BRAGA
CAMPOS,DIEGO ANTUNES
AQUINO,DEODATO DO NASCIMENTO
spellingShingle LOPES,JOSÉ FRÉDSON BEZERRA
ANDRADE,EUNICE MAIA DE
PEREIRA,ERICH CELESTINO BRAGA
CAMPOS,DIEGO ANTUNES
AQUINO,DEODATO DO NASCIMENTO
CUT CYCLES AND SOIL CARBON POTENTIAL STOCKS IN A MANAGED FOREST IN THE CAATINGA DOMAIN IN BRAZIL
author_facet LOPES,JOSÉ FRÉDSON BEZERRA
ANDRADE,EUNICE MAIA DE
PEREIRA,ERICH CELESTINO BRAGA
CAMPOS,DIEGO ANTUNES
AQUINO,DEODATO DO NASCIMENTO
author_sort LOPES,JOSÉ FRÉDSON BEZERRA
title CUT CYCLES AND SOIL CARBON POTENTIAL STOCKS IN A MANAGED FOREST IN THE CAATINGA DOMAIN IN BRAZIL
title_short CUT CYCLES AND SOIL CARBON POTENTIAL STOCKS IN A MANAGED FOREST IN THE CAATINGA DOMAIN IN BRAZIL
title_full CUT CYCLES AND SOIL CARBON POTENTIAL STOCKS IN A MANAGED FOREST IN THE CAATINGA DOMAIN IN BRAZIL
title_fullStr CUT CYCLES AND SOIL CARBON POTENTIAL STOCKS IN A MANAGED FOREST IN THE CAATINGA DOMAIN IN BRAZIL
title_full_unstemmed CUT CYCLES AND SOIL CARBON POTENTIAL STOCKS IN A MANAGED FOREST IN THE CAATINGA DOMAIN IN BRAZIL
title_sort cut cycles and soil carbon potential stocks in a managed forest in the caatinga domain in brazil
description ABSTRACT Management of tropical dry forests in Brazil expanded 450% in the two latest decades; but little is known about the dynamics of these areas. Thus, the objective of this work was to evaluate if the recovery of mean original biomass stocks (MOBS) is a consistent criterion to define cut cycles in a managed forest for charcoal production, and determine the remaining biomass and its contribution to soil carbon stocks. The study was conducted at the Ramalhete Settlement, in General Sampaio, CE, Brazil, in 2018. The explorable shrubby-arboreous biomass (ESAB) and the ESAB mean annual increases (ESAB -MAI) were determined in five areas subjected to clearcutting after 3, 5, 8, 11, and 15 years, and in a preservation area with 40 years of regeneration. Each area was divided into seven plots (20 × 20 m), totaling 42 plots. The ESAB of the plots were compared and the remaining biomass (branches, stumps, and litterfall) in a recently explored area was calculated and converted into organic carbon. The remaining biomass of branches had higher contribution to soil carbon stocks, followed by the litterfall, and stumps. The carbon stocks of the branch component were 3.4-fold higher than those of the litterfall. The recovery of the MOBS of an area after clearcutting should not be used as a criterion to define the cut cycle, since these original carbon stocks do not represent the maximum ESAB production possible in the area; the biodiversity and amount of ESAB in the classes of larger diameter are more adequate criteria.
publisher Universidade Federal Rural do Semi-Árido
publishDate 2020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-21252020000300735
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