Pinus uncinata Ram.: dasometric characterization, site index curves and taper equation

Calama, Rafael; Rı́o, Miren del; Coquillas, V.; Cañellas, Isabel; Montero, Gregorio

doi:10.5424/srf/200413s1-00865

Cited by 7 publications

(7 citation statements)

References 19 publications

(10 reference statements)

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“…All these components fully coincided with the factors other authors have defined as the main drivers of the stand structure in mountain pine-dominated forests (e.g. Gil-Pelegrin and Villar, 1988;Calama et al, 2004;González, 2008).…”

Section: Discussionsupporting

confidence: 78%

“…Other environmental factors may reflect long-term and large-scale effects of silviculture. The positive relationship between the vertical regularity and the concavity of the terrain can be explained by the greater productivity of these stands, which has promoted their management (Calama et al, 2004). In fact, in the second half of 20 th century, mountain pine forests in the Pyrenees continued to be managed as even-aged stands (Cano, 2003), and this may explain the observed higher regularity of the forests located in productive sites.…”

Section: Discussionmentioning

confidence: 99%

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A broad-scale analysis of the main factors determining the current structure and understory composition of Catalonian sub-alpine (Pinus uncinata Ram.) forests

2011

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Section: Discussionsupporting

confidence: 78%

Section: Discussionmentioning

confidence: 99%

A broad-scale analysis of the main factors determining the current structure and understory composition of Catalonian sub-alpine (Pinus uncinata Ram.) forests

2011

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“…indicated for site classifi cation, but the polymorphic equation derived by the GADA approach from LundqvistKorf function (LG) resulted in a more adequate model for prediction of dominant height. Although advantages of dynamic site equations have been pointed out in several studies (AMARO et al, 1998;CALAMA et al, 2004;LOPEZ-SENESPLEDA et al, 2014) we decided to choose the more parsimonious model of Lundqvist-Korf using the guide curve method for site classifi cation. The site quality curves obtained in this study clearly show that Brazil is an excellent territory for African mahogany growth.…”

Section: Figurementioning

confidence: 99%

Site Quality Curves for African Mahogany Plantations in Brazil

Ribeiro

Filho

Tomé

et al. 2016

CERNE

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Site quality estimation is an important tool in forest management since it is useful for modeling growth and yield for even-aged stands. Data from African mahogany (Khaya ivorensis A. Chev.) Brazilian plantations were used to develop a model to predict dominant height growth, comparing dynamic base-age invariant site index models with the guide curve method (static models). For the evaluation of the candidate models qualitative and quantitative criteria were used. We also verified the stability of the candidate models, preferring a model providing fewer site class changes when predicting site index from different ages. The Lundqvist-Korf function fitted with the guide curve method proved to be effective and accurate for site classification and dominant height predictions of African mahogany stands. The range of observed site index, at a reference age of 15, was between 17 and 33 meters. CURVAS DE CLASSIFICAÇÃO DE SÍTIO PARA PLANTIOS DE MOGNO AFRICANO NO BRASIL RESUMO:A estimativa da qualidade de sítio é uma importante ferramenta para o manejo florestal, uma vez que auxilia na modelagem do crescimento e produção de florestas equiâneas. Dados de plantios brasileiros de mogno africano (Khaya ivorensis A. Chev.) foram utilizados para avaliar modelos de crescimento em altura dominante comparando modelos dinâmicos invariantes com a idade padrão e modelos estáticos (método da curva guia). Para a avaliação dos modelos foram utilizados critérios quantitativos e qualitativos. Também foi verificada a estabilidade dos modelos candidatos, sendo preferido o modelo que resultou em menos mudanças de classes na predição da mesma parcela em diferentes idades. O modelo de Lundqvist-Korf com o método da curva guia se mostrou eficiente, sendo recomendado para a classificação de sítios e para a predição de altura dominante em povoamentos de mogno africano. A amplitude dos índices de sítio, na idade de referência de 15 anos, foi de 17 a 33 metros.

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“…(López and Valles, 2009), Pinus durangensis M., Pinus pinea L. or Pinus uncinata Ram. (Calama et al, 2004).…”

Section: Introductionunclassified

Determinación del índice de sitio de las palnatciones de teca (Tectona grandis L.) en Tabasco, México

Minoche

Aza

Domínguez-Domínguez

et al. 2017

Ciencia e investigación agraria

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The site index has been the predominant method used to evaluate forest stand productivity. Teak is one of the most accepted species within the international timber market due to the physical and aesthetic qualities of this wood. The aim of this study was to determine the site index of teak plantations. The study was conducted in teak plantations of Tabasco. Data were obtained from a network of 10 plantations consisting of 35 plots measured over four successive inventories (2003 to 2006). The data were fitted to five models, of which four were based on proposed finite difference equations and a non-integrated function. The most suitable of the five models was chosen, taking into account the goodness of fit, the residual analysis, and the validation with a data subsample from the plantation. The Sloboda model was finally selected, and the results obtained were compared with the model proposed by Upadhyay. This model proved to be a useful tool, not only in evaluating station quality but also in improving the planning and management of teak plantations in Tabasco.

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Pinus uncinata Ram.: dasometric characterization, site index curves and taper equation

Cited by 7 publications

References 19 publications

A broad-scale analysis of the main factors determining the current structure and understory composition of Catalonian sub-alpine (Pinus uncinata Ram.) forests

A broad-scale analysis of the main factors determining the current structure and understory composition of Catalonian sub-alpine (Pinus uncinata Ram.) forests

Site Quality Curves for African Mahogany Plantations in Brazil

Determinación del índice de sitio de las palnatciones de teca (Tectona grandis L.) en Tabasco, México

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