TRANSFORMACIÓN EN EL USO DE LA TIERRA: UN ESTUDIO DE LA MICROCUENCA QUEBRADA ESTERO, SAN RAMÓN
Keywords:
manejo de cuencas hidrográficas, crecimiento urbano, uso de la tierra, ordenamiento territorial, San Ramón, quebrada Estero. watershed management, urban expansion, Land use planning, Estero stream,Abstract
En el siguiente artículo se analizan las transformaciones en el uso de la tierra en la microcuenca de la quebrada Estero en San Ramón, provincia de Alajuela. La investigación se basa en el análisis de fotografías aéreas pertenecientes a los períodos que abarcan 1979, 1989 y 1999. Se estiman los cambios en el área ocupada por los diferentes tipos de usos de la tierra. Se identifica su evolución y se muestran, a partir de suficiente información cuantitativa, los porcentajes de cambios en los distintos usos y las tendencias espaciales de éstos. La investigación demuestra que actualmente existe un acelerado crecimiento urbano con un inadecuado patrón de ordenamiento territorial y una disminución progresiva de áreas dedicadas a bosque, pasto y cultivos.
ABSTRACT
In the following article, transformation of land use in the microcuenca Estero in San Ramón, province of Alajuela is analyzed. The investigation is based upon the analysis of aerial photographs of three different periods of 1979, 1989 and 1999. This allows for the estimation of change in each distinct Land use type and the identification of the evolution of Land use, gives enough quantitative information to calculate the percentage of change between each period, and the tendencies of incremental expansion. The investigation shows a current, incremental acceleration of urban áreas with minimal territorial planning and a progressive decrease of áreas previously occupied by forests, pastures and agriculture.
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