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BIOFIX Scientific Journal
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BIOFIX Scientific Journal
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BIOFIX Scientific Journal
Article . 2018
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MODELOS HIPSOMÉTRICOS PARA UM POVOAMENTO JOVEM DE Khaya ivorensis A. Chev

Authors: Lorena Stolle; Diego Rodrigues Velozo; Ana Paula Dalla Corte; Carlos Roberto Sanquetta; Alexandre Beutling;

MODELOS HIPSOMÉTRICOS PARA UM POVOAMENTO JOVEM DE Khaya ivorensis A. Chev

Abstract

A medição de alturas das árvores em um povoamento florestal é considerada uma atividade onerosa, sendo usual medir a altura de apenas algumas árvores da parcela durante o inventário florestal. O objetivo deste trabalho consistiu em ajustar e testar modelos hipsométricos a fim de selecionar uma equação para estimar a altura das árvores de um povoamento de Khaya ivorensis (mogno africano) com 3 anos de idade. Os dados foram coletados em um povoamento de Mogno localizado no município de Chapadão do Sul, nordeste do estado do Mato Grosso do Sul, Brasil. Cinco modelos hipsométricos foram pré-selecionados e ajustados por regressão linear. A seleção da melhor equação foi realizada com base no coeficiente de determinação ajustado (R2aj.), erro padrão da estimativa (Syx%), Critério de Informação de Akaike (AIC), valor de F e análise gráfica da distribuição dos resíduos. Os modelos selecionados apresentaram R2aj. de 0,46, valores de Syx% próximos de 11% e AIC variando de 36,7 a 38,6%. A distribuição dos resíduos se mostrou homogênea e sem tendenciosidades. Baseado nas medidas de precisão, o modelo de Curtis foi considerado ligeiramente superior, porém os modelos de Henricksen e o Linear podem ser utilizados para estimativa da altura em função do diâmetro, pois apresentaram critérios estatísticos muito semelhantes.

Keywords

TD172-193.5, Agriculture (General), TD169-171.8, Mensuração florestal, Mogno Africano, Environmental protection, Altura, Environmental pollution, S1-972

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    influence
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
gold