Dynamics of the urban coverage of the San Ramón city, Alajuela, 1991-2018
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| Autores: | , , |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2020 |
| Descripción: | Latin America has become one of the most urbanized regions on the planet, which is reflected at all levels of the hierarchy of the urban system, from the metropolitan areas of the different countries, urban agglomerations, intermediate, secondary, and tertiary cities. Given this, the interest arises to determine the dynamics of urban coverage in the San Ramón district - Alajuela, Costa Rica, and its peripheral area, in the period between 1991 and 2018. Through the processing of geospatial information, properly Landsat 5, ASTER, and Sentinel 2a satellite images of the years 1991, 2001, 2011, and 2018, it was possible to determine the areas (in hectares) of urban coverage and urban land. By calculating the Annual Change Rate (TCA), the gains and losses of each coverage in the analyzed period were determined and the Urban Growth Rate (TCU) allowed to identify the growth of the urban area between periods of time. The results show that between 1991 and 2001 there was the largest increase in urban coverage (54, 80%), between 2001 and 2011 the increase was 21, 68%, and between 2011 and 2018, 49,43%. The Annual Growth Rate shows that in all periods there is a gain in urban coverage and loss of urban land, with the period 2011-2018 showing the highest rate of gain in urban coverage (5, 15%). The study concludes that the urbanization process has tended to increase in the period of time studied, which is consistent with the dynamics of other cities in the country. |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Lenguaje: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/44238 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/pensamiento-actual/article/view/44238 |
| Palabra clave: | urban cover urban ground cities teledetection San Ramón remote sensing cobertura urbana suelo urbano ciudades teledetección sensores remotos |