WOOD BRANCHES CHARACTERIZATION AND USE OF THE LITY OF BRAZILIA URBAN TREES

• Main Authors: Ailton Teixeira do Vale, Thaise Rachel Sarmento, Alexandre Nascimento Almeida
• Format: Article
• Language: Portuguese
• Published: Universidade Federal de Santa Maria 2010-08-01
• Series: Ciência Florestal
• Subjects: resíduo; poda; madeira; arborização
• Online Access: http://cascavel.ufsm.br/revistas/ojs-2.2.2/index.php/cienciaflorestal/article/view/1878
• ISSN: 0103-9954; 1980-5098

<p>This work had as its principal objective the characterization of branches coming from tree pruning for use as fire wood and charcoal. There were studied twelve species of the lity  of Brazilia urban trees. The specie <em>Persea </em><em>americana</em><em>, Spathodea campanulata, Ficus sp, </em><em>Chorisia speciosa</em> and <em>Ochoma pyramidale</em> with density below 0.44 g/cm³, were classified as soft wood. <em>Caesalpinea leiostachya</em>, with 0.73 g/cm³ was classified as hard wood and <em>Pterogyne nitens, Peltophorum dubium, Mangifera indica, </em><em>Syzygium jambolana</em>, <em>Ligustrum lucidum</em> and <em>Paquira aquática</em>, with specific gravity between 0.5 e 0.7 g/cm³ were  classified  as  intermediate  hardness.  Four  species  (<em>C. leiostachya</em>,  <em>S. jambolana</em>, <em>L.lucidum</em> e <em>P. dubium</em>) showed larger contraction<em> </em>(between 13 and 15.5%) than <em>Ficus sp. </em>and <em>M. indica </em>with, respectively, 6.70%  and 7.41%. The species with larger specific gravity are preferred for energy yield. On the other hand, species with lowersmall specific gravity, can be utilized for briquet, organic compositing and small wood objects.</p>