RELAÇÃO DO QUOCIENTE DO DIÂMETRO PELA ÁREA BASAL COM O AUTODESBASTE EM POVOAMENTO EQUIÂNEO DE Pinus taeda L.

• Main Authors: Paulo Sérgio Pigatto Schneider, César Augusto Guimarães Finger, Paulo Renato Schneider
• Format: Article
• Language: Portuguese
• Published: Universidade Federal de Santa Maria 2013-01-01
• Series: Ciência Florestal
• Online Access: http://www.redalyc.org/articulo.oa?id=53425660015

This work undertakes to study de diameter: the basal area ratio at the moment of occurrence of self-thinning of Pinus taeda L. stand in some spacings, considering its full density. For that, the Tang model was used in order to relate the density of trees with the diameter, with data of permanent plots, measured annually until 18 years-old. The results indicate that self-thinning model for Tang presented excellent precision and high efficiency, however with distinct slope coefficient of the praised one for Tang (-3/2) resulting a value of -1.6523. At the moment of occurrence of self-thinning, trees reached diameter equal to 14 and 17 cm, in the spacing of 2 x 2 or 3 x 2 m, with basal area of 38.8 and 47.5 m² ha-1, respectively. In these spacings, the maximal basal area was of 78 m² ha-1, in 18 years-old, rising tendency. In these spacing, the diameter: the basal area ratio at the moment of occurrence of self-thinning was 0.36 and 0.37, respectively.