Data/hora: 22/06/2024 01:14:13

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 08/09/2015
Data da última atualização: | 25/05/2017
Autoria: | FERRAZ FILHO, A. C.; SCOLFORO, J. R. S.; OLIVEIRA, A. D. de; MELLO, J. M. de.
Afiliação: | ANTONIO CARLOS FERRAZ FILHO, UFLA; JOSÉ ROBERTO SOARES SCOLFORO, UFLA; ANTONIO DONIZETTE DE OLIVEIRA, UFLA; JOSÉ MÁRCIO DE MELLO, UFLA.
Título: | Modeling growth and yield of loblolly pine stands under intensive management.
Ano de publicação: | 2015
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 50, n. 8, p. 707-717, ago. 2015.
Idioma: | Inglês
Notas: | Título em português: Modelagem do crescimento e da produção de povoamento de Pinus taeda sob manejo intensivo.
Conteúdo: | The objective of this work was to develop and validate a prognosis system for volume yield and basal area of intensively managed loblolly pine (Pinus taeda) stands, using stand and diameter class models compatible in basal area estimates. The data used in the study were obtained from plantations located in northern Uruguay. For model validation without data loss, a three?phase validation scheme was applied: first, the equations were fitted without the validation database; then, model validation was carried out; and, finally, the database was regrouped to recalibrate the parameter values. After the validation and final parameterization of the models, a simulation of the first commercial thinning was carried out. The developed prognosis system was precise and accurate in estimating basal area production per hectare or per diameter classes. There was compatibility in basal area estimates between diameter class and whole stand models, with a mean difference of ?0.01m2 ha?1. The validation scheme applied is logic and consistent, since information on the accuracy and precision of the models is obtained without the loss of any information in the estimation of the models? parameters
Palavras-Chave: | Debaste; Sistema de prognose; Validação de modelo.
Thesagro: | Pinus Taeda; Poda.
Thesaurus Nal: | Model validation; Pruning.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/129167/1/Modeling-growth-and-yield.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (58173-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS