Method SB-BARTHIN to Evaluate the Effects of Thinning An Application to Pinus pinaster Ait.

• Autor(a) principal: Barreto,Luís Soares
• Data de Publicação: 2001
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-63522001000200008
• topic: effects of thinnings; evaluation of thinnings; Pinus pinaster; thinnings

The author proposes a new method to project thinned stands, and applies it to stands of Pinus pinaster Ait.. First, the author isolates the sole effect of thinning in dbh and height growth. After, the author presents method SB-BARTHIN to project a stand of Pinus pinaster, that reflects the effects of thinning on dbh and height growth, and on the subsequent process of self-thinning. Tabulated values to apply the method to stands of the same species are displayed. The use of the method simulating a neutral thinning, a low thinning and a crown thinning is exhibited. The simulations are coherent and conform to the available knowledge, about the effects on thinnings on growth. The main conclusion about the effects of thinning on the growth of stands can be summarized in a single statement: the sole effect of thinning abides the law of diminishing returns. The author also analysis when self-thinning restarts, after thinning. Method SOBA-2 is also introduced.