Soil properties and variability of tracheid dimensions and wood density in Pinus caribaea var. hondurensis Solo, dimensão dos traqueídeos e densidade da madeira em Pinus caribaea var. hondurensis
<p>The understanding of wood quality in relation to different forest sites is of fundamental relevance in current timber market. There are only few studies available concerning soil and wood quality of tropical pinots. So, the goal of this work was to characterize tracheid dimensions a...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Embrapa Florestas
2011-06-01
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| Series: | Pesquisa Florestal Brasileira |
| Subjects: | |
| Online Access: | http://www.cnpf.embrapa.br/pfb/index.php/pfb/article/view/195 |
| Summary: | <p>The understanding of wood quality in relation to different forest sites is of fundamental relevance in current timber market. There are only few studies available concerning soil and wood quality of tropical pinots. So, the goal of this work was to characterize tracheid dimensions and wood density of <em>Pinus caribaea </em>var. <em>hondurensis</em>, correlating these variables with soil properties at different sites. Discs were taken at 1.3 m height and comprised two radial samples in each of the four dominant trees removed at four different sites. Measurements for wood density were made from the third to the eleventh year old rings, and the measurement of tracheid dimensions were made in the fourth, eighth and eleventh year sold rings. The soil, collected in the canopy projection area of each tree was analyzed chemically and physically in different layers. The tracheid dimensions and wood density showed stabilization between the eighth and the eleventh years old rings. Moreover, the tracheid dimensions varied between sites and did not present a pattern of variation in relation to soil properties at the different sites.</p><p>doi: 10.4336/2011.pfb.31.66.93</p><br><!--[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 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*/ table.MsoNormalTable {mso-style-name:"Tabela normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} --> <!--[endif]--> <p class="MsoNormal" style="text-indent: 0cm;"><span>O conhecimento da qualidade da madeira em relação aos diversos locais de plantio é de fundamental relevance importância no atual mercado madeireiro. Sendo as espécies tropicais de pinheiro alvo de poucos estudos relacionados à influência so solo na qualidade da madeira, objetivou-se caracterizar a dimensão dos traqueídeos e da densidade da madeira de <em>Pinus</em> <em>caribaea </em>var. <em>hondurensis</em>, bem como correlacionar estas variáveis com atributos dos solos de diferentes sítios. Assim, discos retirados ao diâmetro à altura do peito (DAP) compuseram duas amostras radiais em cada uma das quatro árvores dominantes retiradas em quatro diferentes sítios. Foram feitas medições da densidade da madeira desde o anel correspondente ao terceiro ano de idade até os 11 anos e a medições das dimensões dos traqueídeos nos anéis correspondentes às idades de 4, 8 e 11 anos. O solo, coletado na projeção de copa de cada árvore, foi analisado química e fisicamente em diferentes camadas. A dimensão dos traqueídeos e a densidade da madeira mostraram estabilização entre 8 e 11 anos de idade. Além disto, as dimensões dos traqueídeos variaram entre sítios, mas sem apresentar padrão de variação em relação aos diferentes atributos dos solos nos diferentes sítios.</span></p><p class="MsoNormal" style="text-indent: 0cm;"><span>doi: 10.4336/2011.pfb.31.66.93<br /></span></p> |
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| ISSN: | 1809-3647 1983-2605 |