Biomassa aérea e estimativa do carbono orgânico em Agrossistema do coqueiro (Cocus nucifera, L.) anão verde irrigado

• Main Authors: João Jones da Silva, Thiago J. Dias, Hermano Oliveira Rolim, Luciana R. de LIma, Ednaldo Barbosa Pereira Junior
• Format: Article
• Language: English
• Published: Grupo Verde de Agroecologia e Abelhas (GVAA) 2014-05-01
• Series: Revista Verde de Agroecologia e Desenvolvimento Sustentável
• Online Access: http://www.gvaa.com.br/revista/index.php/RVADS/article/view/2565

<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:HyphenationZone>21</w:HyphenationZone> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>PT-BR</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--><span style="font-size: 11.0pt; mso-bidi-font-size: 12.0pt; line-height: 115%; font-family: 'Times New Roman','serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: PT-BR; mso-fareast-language: PT-BR; mso-bidi-language: AR-SA;">Objetivou-se com o presente trabalho </span><span style="font-size: 11.0pt; mso-bidi-font-size: 12.0pt; line-height: 115%; font-family: 'Times New Roman','serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: PT-BR; mso-fareast-language: EN-US; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold;">estimar os quantitativos da biomassa verde e seca da parte aérea do coqueiro e o estoque de carbono acumulados nos respectivos compartimentos. Buscou-se ainda verificar se esta variável pode ser utilizada como indicador consistente de sustentabilidade, de modo a oferecer uma contribuição direta aos estudos nesta área. A avaliação do estoque de carbono imobilizado é importante não apenas porque a cultura do coqueiro irrigado em Sousa/PB é relevante do ponto de vista socioeconômico, mas também por essa cultura ser a opção preferencial de cultivo e apresentar uma tendência à expansão na região. Para obtenção das amostras foram previamente selecionadas três planas representativas da população, as quais foram derrubadas e em seguida determinadas as biomassas frescas totais das diversas partes aéreas e retirados às respectivas amostras para determinar a biomassa seca. Na sequência aplicando-se o fator de conversão 0,48 para palmeiras encontrou-se o teor de carbono imobilizado total de cada árvore e de seus diversos compartimentos. Em seguida, por estimativa, determinou-se a biomassa fresca e seca total e o teor de carbono imobilizado do ecossistema em estudo. Dos resultados conclui-se que o estipe e as folhas verdes concentram a maior quantidade de carbono imobilizado da planta. O cultivo do coqueiro anão verde irrigado constitui-se em um importante mecanismo de imobilizar carbono, propiciando o estoque de 22.648 kg de carbono por hectare, na biomassa aérea.</span><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" DefUnhideWhenUsed="true" DefSemiHidden="true" DefQFormat="false" DefPriority="99" LatentStyleCount="267"> <w:LsdException Locked="false" Priority="0" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Normal" /> <w:LsdException Locked="false" Priority="9" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="heading 1" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 2" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 3" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 4" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 5" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 6" /> 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