Determinación de la firma espectral de gynoxys sp, para la clasificación de imágenes satelitales en el bosque de ceja andina en la parroquia Achupallas, cantón Alausí, provincia de Chimborazo

Abstract

The current research proposes to determine the Gynoxys sp spectral signature to classify the satellite images of an Andean forest located in Achupallas, Alausi Country, Chimborazo Province. For this, it was necessary to use Fiel Spec 4 Widerange spectral digital signature radiometer, ViewSpec Pro de ASD software, and rapideye satellite image. In order to obtain the reflectance curve (Spectral Signature), three-day samples were taken with the use of a High – Presicion GPS to locate the place. In addition the metadata of the species in its young growth stage at different time (10:00, 12:00 and 14:00 hours) were elaborated, this taking into account that the species receives the largest amount of solar radiation, the reflectance levels were analized from a completely randomized desing, for the image some check points were taken locating the vegetation stains by means of a 5 by 5-metre study. Once the field spectra taking finished, it was possible to visualize the radiometer spectral signature as well as the ones taken at the check points, this was carried out with the use of SAMS software for the analysis which determined a médium value of reflectance (0.0174 %) at 350 nm of the electromagnetic spectrum representing the chlorophyll. In addition there was no presence of significance levels between the samples intervals as well as the monitoring hours in a day with optimal conditions for the radiometer-spectrum and a representative signature beginning with the image. This information will be used to obtain a wide range of spectral signature and place the species in similar áreas with the use of remote detection.