Comparaci?n de t?cnicas para determinar cobertura vegetal y usos de la tierra en ?reas de inter?s ecol?gico en la provincia de Manab?, Ecuador
- Authors
- Cartaya R?os, Scarlet Josefina
- Format
- Article
- Status
- publishedVersion
- Description
The objective of this research was to define the most appropriate technique to determine the vegetative cover and land use in the Pacoche Wildlife Refuge and in the canton Flavio Alfaro of the province of Manabi, Ecuador. Employment is supervised classification, principal component analysis and the normalized difference vegetation index (NDVI). The models were calibrated by means of intentional sampling stratified and crossed with data taken in the field and the production systems of the Space Institute Ecuadorian and ecosystems of the Ministry of Environment of Ecuador, coupled with field control. At the level of results, with the supervised classification was able to obtain five categories of coverage and uses, three non-plant and two plants. Using principal components analysis, were obtained the same categories, although the spatialisation proved to be more accurate than the previous one, facilitating the observation of the elements. With the NDVI is obtained the same amount of categories; however, the latter threw three plant and two non-plant classes, which allows us to conclude that the most suitable technique to determine the vegetative cover and land use is the NDVI, whose interpretation must be supported by principal components analysis.
El objetivo de esta investigaci?n fue definir la t?cnica m?s apropiada para determinar la cobertura vegetal y usos de la tierra en el Refugio de Vida Silvestre Marino Costera Pacoche (RVSMCP) y en el cant?n Flavio Alfaro de la provincia de Manab?, Ecuador. Se emple? clasificaci?n supervisada, an?lisis de componentes principales y el ?ndice de vegetaci?n de diferencia normalizada (NDVI). Se calibraron los modelos mediante muestreo intencional estratificado y cruzado con la data tomada en campo y los sistemas de producci?n del Instituto Espacial Ecuatoriano y de ecosistemas del Ministerio del Ambiente del Ecuador, ello sumado a control de campo. A nivel de resultados, con la clasificaci?n supervisada se logr? obtener cinco categor?as de cobertura y usos, tres no vegetales y dos vegetales. Mediante el an?lisis de componentes principales, se obtuvieron las mismas categor?as, aunque la espacializaci?n result? m?s precisa que la anterior, facilitando la observaci?n de los elementos. Con el NDVI se obtuvieron la misma cantidad de categor?as; sin embargo, este ?ltimo arroj? tres clases vegetales y dos clases no vegetales, lo que permite concluir que la t?cnica m?s adecuada para determinar la cobertura vegetal y usos de la tierra es el NDVI, cuya interpretaci?n debe apoyarse con el an?lisis de componentes principales.
Universidad Laica Eloy Alfaro de Manab?
http://selper.org.co/papers-XVI-Simposio/Cartografia-Digital/CD2-Comparacion-de-tecnicas-cobertura-vegetal.pdf
- Publication Year
- 2014
- Language
- spa
- Topic
- AN?LISIS DE COMPONENTES PRINCIPALES
CLASIFICACI?N SUPERVISADA
NDVI
- Repository
- Repositorio SENESCYT
- Rights
- openAccess
- License
- openAccess