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Relações hipsométricas em floresta estacional semidecidual

Authors: Curto, Rafaella De Angeli; Loureiro, Gabrielle Hambrecht; Môra, Rômulo; de Miranda, Rodrigo Otávio Veiga; Péllico Netto, Sylvio; da Silva, Gilson Fernandes;

Relações hipsométricas em floresta estacional semidecidual

Abstract

Relações hipsométricas são importantes na obtenção da altura, auxiliando na quantificação do volume de madeira e no conhecimento da estrutura vertical em florestas nativas. Objetivou-se avaliar o desempenho no ajuste de relações hipsométricas na Floresta do Rosal, Guaçuí-ES, ao estratificar os dados por espécie, parcela e classe de diâmetro, utilizando oito modelos hipsométricos, selecionados com base no coeficiente de determinação ajustado (R2ajust), no erro padrão da estimativa relativo (Syx%) e na análise dos resíduos. O Teste F de Graybill foi aplicado para verificar identidade entre as formas de ajuste. Para o ajuste sem estratificação, o modelo selecionado foi o de Trorey, com R2ajust de 0,76 e Syx% de 21,23. Considerando-se os ajustes realizados conjuntamente em cada estratificação, estes foram mais precisos em relação ao ajuste geral, com destaque para a estratificação por espécie, que forneceu valores de R2ajust de 0,82 e Syx% de 18,26. Porém, pelo Teste F de Graybill, as estimativas de altura total para as três formas de estratificação não diferiram daquelas obtidas sem o uso de estratificação

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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!
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Average
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