Estimativas dendrométricas obtidas por vant para swietenia macrophylla king em um sistema agroflorestal

Abstract

Studies with geotechnologies are incipient in the forest environment, making it necessary to assess the reliability of the generated estimates. Thus, the objective of this work was to verify the compatibility between dendrometric estimates obtained through traditional forest inventory and estimates obtained by drone flight for the Brazilian mahogany species. The plantation covers 2.41 ha, composed of Australian cedar (Toona ciliata M. Roem.), Brazilian mahogany (Swietenia macrophylla King) and coffee (Coffea arabica L.) species, located in Monte Carmelo. First, a UAV flight was conducted, where aerial photography was taken. Through this image, the canopy areas of the selected trees were defined. After the execution of the flight, the identification of the species in the field was carried out, in addition to measuring the diameters, total and commercial heights of the selected trees. From the correlation between variables and using the stepwise method, models to estimate the diameter at breast height (d), commercial height (hc) and total height (h) were tested. Subsequently, the compatibility of the estimates of the dendrometric variables was analyzed using Graybill's F test. The results demonstrate that, for the conditions in which the study was carried out, the use of drone image generated significantly different estimates from those collected in the field.