Projection of land use change in Otavalo- Ecuador: a vision to year 2031

Land use change originates in anthropogenic activities and causes loss of ecosystems. In this study, land use in the canton of Otavalo was projected based on the analysis of land use change between 1993 and 2012. For this purpose, aerial photographs from 1993, 2002, and 2012 were used to perform a s...

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Bibliographic Details
Main Authors: Galiano Suárez, Mariana Alejandra, Suárez Salazar, Jonathan Daniel, Rosales Enríquez, Oscar Armando, Jácome Aguirre, Gabriel Alexis, Arias Muñoz, Darío Paúl
Format: Article in Journal/Newspaper
Language:Spanish
Published: Universidad Politécnica Estatal del Carchi 2024
Subjects:
Online Access:https://revistasdigitales.upec.edu.ec/index.php/sathiri/article/view/1284
https://doi.org/10.32645/13906925.1284
Description
Summary:Land use change originates in anthropogenic activities and causes loss of ecosystems. In this study, land use in the canton of Otavalo was projected based on the analysis of land use change between 1993 and 2012. For this purpose, aerial photographs from 1993, 2002, and 2012 were used to perform a supervised classification using the maximum likelihood method, obtaining maps of land cover and land use. The Kappa index was applied for the classification validation, and a value of 0.93 was obtained. As a result of the classification, 12 categories of land cover and land use were obtained, showing that between 1993-2012, there was a 2% loss in native forest and paramo, and a 69% increase in bare soil, 16% in planted forest and 15% in agricultural and livestock mosaic. In the future projection to 2031, these transitions are expected to continue and even deepen since the paramo and native forest will continue to decrease, and the agricultural and livestock mosaic, together with crops, planted forest, and areas without vegetation, will continue to increase. This changing trend implies sustained agricultural and livestock frontier growth, urban expansion, and the reduction of fragile ecosystems. El cambio de uso del suelo presenta su origen en las actividades antrópicas y ocasiona pérdida de ecosistemas. En el presente estudio se proyectó el uso del suelo del cantón Otavalo con base al análisis del cambio de uso de suelo ocurrido entre los años 1993 y 2012. Para ello se empleó fotografías aéreas pancromáticas y a color de los años 1993, 2002 y 2012 y se realizó una clasificación supervisada mediante el método de máxima verosimilitud, obteniendo cartografía sobre la cobertura y uso del suelo de los años de estudio. Para la validación de la clasificación se aplicó el índice Kappa, que obtuvo un valor de 0,93. Como resultado de la clasificación se obtuvieron 12 categorías de cobertura y usos del suelo, donde se evidenció, que entre los años 1993-2012, existió una pérdida del 2% en bosque nativo y páramo, y un incremento ...