Influencia de diferentes fontes de erro sobre as medições de alturas de árvores

CERNE

Silva, Gilson Fernandes da¹  Lemos, Ronielly³  Soares, Carlos Pedro Boechat⁵  Oliveira, Onair Mendes de⁴  Souza, Carlos Alberto Martinelli de² 

[1] Engenheiro Florestal, Professor Doutor em Ciência Florestal - Universidade Federal do Espírito Santo, Alegre, Brasil$$;Engenheiro Florestal, Professor Doutor em Engenharia Florestal - Universidade Federal de São Carlos, Sorocaba, Brasil$$;Graduando em Engenharia Florestal - Universidade Federal do Espírito Santo, Alegre, Brasil$$;Engenheiro Florestal, Mestrando em Ciências Florestais - Universidade Federal do Espírito Santo, Alegre, Brasil$$;Engenheiro Florestal, Professor Doutor em Ciência Florestal - Universidade Federal de Viçosa, Viçosa, Brasil$$

关键词: Dendrometry;    hipsometer;    trigonometric principles.;   

DOI  :  10.1590/S0104-77602012000300006

来源: Universidade Federal de Lavras-UFLA

【 摘 要 】

The objective of this study was to evaluate the influence of different sources of variation in tree height measurements using hypsometers based on trigonometric principles. The use of this type of device requires that the measurement is at a known distance from the tree. Therefore, if these distances are small or too big, oscillations can occur during the reading of the device or difficulties to visualize the tree tops, causing errors in the height measurement. Thereby, in this study a set of tree heights were measured with a hypsometer at different distances and by three different individuals. Afterwards, the results were compared with the actual heights of the trees obtained by climbing them. Finally, after the analysis, the results indicated that the distance of measurement, along with the hypsometer used, affects in obtaining estimation of the total height.

【 授权许可】

Unknown