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| OLIVEIRA,XIMENA M. DE; RIBEIRO,ANDRESSA; FERRAZ FILHO,ANTONIO CARLOS; MAYRINCK,RAFAELLA C.; LIMA,RENATO R. DE; SCOLFORO,JOSÉ ROBERTO S.. |
| Abstract African mahogany (Khaya spp.) plantations are in expansion in Brazil and in the world. This fact justifies the need for studies related to its growth and yield. This paper aimed to evaluate the performance of single-entry and double-entry models for estimating merchantable and total volume for Khaya ivorensis plantations before the first thinning (7 years) and expected final cut (15 years). Volume data was from 100 and 46 trees in Minas Gerais and Pará states, respectively, by using an electronic dendrometer (Criterion RD 1000). Observed volumes were calculated by Smalian’s formula. To validate the optical dendrometer, 10 trees were felled and had their volume measured, and compared with the volumes measured indirectly. The results showed that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: African mahogany; Forest mensuration; Non-destructive measurements; Thinning. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703285 |
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| FERRAZ FILHO,ANTONIO C.; MOLA-YUDEGO,BLAS; GONZÁLEZ-OLABARRIA,JOSÉ R.; SCOLFORO,JOSÉ ROBERTO S.. |
| ABSTRACT This study focuses on the effects of different thinning regimes on clonal Eucalyptus plantations growth. Four different trials, planted in 1999 and located in Bahia and Espírito Santo States, were used. Aside from thinning, initial planting density, and post thinning fertilization application were also evaluated. Before canopy closure, and therefore before excessive competition between trees took place, it was found that stands planted under low densities (667 trees per hectare) presented a lower mortality proportion when compared to stand planted under higher densities (1111 trees per hectare). However, diameter growth prior to thinning operations was not statistically different between these two densities, presenting an overall mean of 4.9... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growing space; Forest management; Solid wood products; Stand density management. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100255 |
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