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https://repositorio.inpa.gov.br/handle/1/15541
Título: | Digital approach for measuring tree diameters in the Amazon forest |
Autor: | Celes, Carlos Henrique Souza Araújo, Raquel Nazaré O. de Emmert, Fabiano Lima, Adriano José Nogueira Campos, Moacir Alberto Assis |
Data do documento: | 2019 |
Revista: | Floresta e Ambiente |
É parte de: | Volume 26, Número 1 |
Abstract: | Buttresses and other natural structures modify the shape of stems in Amazonia and change the diameter at breast height (DBH) measured at 1.3 m at ground level. The lack of adequate measurement techniques affects negatively forest dynamics analyses and biomass estimating. The study evaluated an indirect method of measuring diameters in trees with DBH > 40 cm using principles of digital photogrammetry. The results obtained with two cameras (smartphone and Sony) were compared with direct measurements using diametric tape and a ladder. The technique is adequate to measure the diameters of trees with measurement point above 2 m of ground, with a confidence interval of ±1cm. The use of photogrammetry as a supplementary tool to the diametric tape (IC ± 0.24 cm) is recommended, helping to measure trees with diameter above the reach of the technician in forest inventories. © 2019 Universidade Federal Rural do Rio de Janeiro (UFRRJ). |
DOI: | 10.1590/2179-8087.038416 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo-inpa.pdf | 1,41 MB | Adobe PDF | Visualizar/Abrir |
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