Produção, Carbono e Rentabilidade Econômica de Pinus elliottii e Eucalyptus grandis em Sistemas Silvipastoris no Sul do Brasil Production, Carbon and Economical Profitability of Pinus elliottii and Eucalyptus grandis in Silvipastoris System in South Brazil

<!-- @page { margin: 2cm } P { margin-bottom: 0.21cm } --> <p class="western" style="margin-bottom: 0cm;" align="JUSTIFY"><span style="color: #231f20;"><span style="font-family: Times New Roman,serif;"...

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Bibliographic Details
Main Authors: Edilson Batista de Oliveira, Jorge Ribaski, Éderson Augusto Zanetti, Joel Ferreira Penteado Junior
Format: Article
Language:English
Published: Embrapa Florestas 2010-03-01
Series:Pesquisa Florestal Brasileira
Subjects:
Online Access:http://www.cnpf.embrapa.br/pfb/index.php/pfb/article/view/72
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Summary:&lt;!-- @page { margin: 2cm } P { margin-bottom: 0.21cm } --&gt; &lt;p class="western" style="margin-bottom: 0cm;" align="JUSTIFY"&gt;&lt;span style="color: #231f20;"&gt;&lt;span style="font-family: Times New Roman,serif;"&gt;&lt;span style="font-size: x-small;"&gt;O presente trabalho teve por objetivos estimar a produção de madeira, o estoque de carbono e a rentabilidade econômica, incluindo a venda de créditos de carbono de plantações de &lt;/span&gt;&lt;/span&gt;&lt;span style="font-family: Times New Roman,serif;"&gt;&lt;span style="font-size: x-small;"&gt;&lt;em&gt;Eucalyptus grandis &lt;/em&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="font-family: Times New Roman,serif;"&gt;&lt;span style="font-size: x-small;"&gt;e &lt;/span&gt;&lt;/span&gt;&lt;span style="font-family: Times New Roman,serif;"&gt;&lt;span style="font-size: x-small;"&gt;&lt;em&gt;Pinus elliottii &lt;/em&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="font-family: Times New Roman,serif;"&gt;&lt;span style="font-size: x-small;"&gt;em consórcio com pastagens. Foram utilizados dois experimentos com cada espécie, todos instalados em Alegrete, RS, em áreas de pastagem natural. Os experimentos possuíam três tratamentos, dois deles constituídos por sistemas silvipastoris implantados em fileiras triplas de árvores, com ambas as espécies no espaçamento de 3,0 m x 1,5 m, sendo o primeiro com um corredor de 14 m, entre as fileiras triplas, destinado ao pastejo dos animais, e o outro com um corredor de 34 m. O terceiro tratamento possuía o cultivo isolado das duas espécies florestais, com espaçamento de 3,0 m x 3,0 m. Foram simulados desbastes e corte final aos 21 anos de idade para todos os tratamentos. As árvores propiciaram retorno econômico em todos os sistemas testados, com rentabilidade a partir do desbaste aos 7 anos de idade. A venda de créditos de carbono torna o componente florestal ainda mais atrativo devido, principalmente, à receita auferida desde o início do projeto.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;<br>This work objective was to estimate wood production, CO2 stocks and economical profitability, including carbon credits sale from pasture  associated eucalyptus and pine plantations. For each species, two experimental plots were used, all installed at natural pasture land in  Alegrete, Rio Grande do Sul State. Experimental plots were submitted  to three treatments: two of them with silvipasture systems at triple tree lines, with both species at 3.0 m x 1.5 m intervals, the first of which with a 14 m corridor (between triple lines) for animal feeding and, the second with a 34 m corridor; the third treatment consisted of isolated cultivation of both tree species, with 3.0 x 3.0 m intervals. Thinning and 21 years final cutting were simulated for all treatments. Trees showed positive economical returns at all tested systems, with profitability after the 7 years thinning operation. Carbon credits sales can turn the forest component attractiveness up, especially when the income generated is considered since the project start.
ISSN:1809-3647
1983-2605