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Please use this identifier to cite or link to this item: http://dspace.utalca.cl/handle/1950/8809

Title: Green area and vegetation cover indexes for Parral city (Chile) using Photointerpretation and GIS
Other Titles: Índices de área verde y cobertura vegetal para la ciudade de Parral (Chile), mediante Fotointerpretación y GIS
Authors: Mena, C.
Ormazabal, Y.
Morales, Y.
Santelices, R.
Gajardo, J.
Keywords: urban green area
Remote Sensing
Issue Date: 2011
Citation: CIENCIA FLORESTAL Volume: 21 Issue: 3 Pages: 521-531
Abstract: he importance of the green areas is increasing since they are an important factor in the health and welfare of urban population. Therefore, in Parral city, in Central Chile, it was quantified and analyzed the availability of green areas and vegetation cover, using aerial photographs scale 1: 10000 and Geographic Information Systems (GIS). In a first stage, urban street trees were quantified through a simple random sample of twenty-four units with field measurements combined with measurements on aerial photographs, from which it was obtained the surface provided. Subsequently, through the creation of GIS layers, the surface of existing green areas and available open spaces were obtained. In addition, through supervised digital classification, the surface covered by urban forestry in private spaces was calculated. Quantity indexes show that Parral city currently has 12.72 ha of green areas, equivalent to 4.82 m(2)/hab, which implies a green area frequency of 0.022 m(2)/m(2). These values could be improved, if the available open space are incorporated and thereby reach 12.06 m(2) per inhabitant. In relation with availability indexes it was established that the average of accessibility to a green area is 327.2 m. Moreover, assuming a buffer of 200 m around the green areas, it was determined that there are 5160 houses with the basic service (56.4%). By incorporating the available open spaces, these values decrease significantly obtaining an average of accessibility to a green area of 213.7 m and coverage of basic service of 79.2%. Finally, it was estimated that the existing vegetation within the urban blocks (urban forest in private spaces) represents an important resource 17.8 times larger than urban street trees, so it should be considered within the municipal plans and policies.
Description: Mena, C (reprint author), Univ Talca, Fac Cs Forestales, Avda Lircay S-N, Talca, Chile.
URI: http://dspace.utalca.cl/handle/1950/8809
ISSN: 0103-9954
Appears in Collections:Artículos en publicaciones ISI - Universidad de Talca

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