Análisis temporal y especial del cambio de cobertura del bosque nativo en paisajes protegidos de la parroquia Rio Tigre, provincia de Pastaza
The present research study analyzed the changes in vegetation cover and fragmentation patterns of the native forest in protected landscapes of the Río Tigre parish, Pastaza province, during the period 1987-2017. Remote sensing and GIS tools were used, with which a supervised classification of Landsa...
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| Formatua: | bachelorThesis |
| Hizkuntza: | spa |
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2019
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| Gaiak: | |
| Sarrera elektronikoa: | http://dspace.unl.edu.ec/jspui/handle/123456789/22586 |
| Etiketak: |
Etiketa erantsi
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Etiketa erantsi | Gaia: | The present research study analyzed the changes in vegetation cover and fragmentation patterns of the native forest in protected landscapes of the Río Tigre parish, Pastaza province, during the period 1987-2017. Remote sensing and GIS tools were used, with which a supervised classification of Landsat 5 TM satellite images (year 1987) and Landsat 8 OLI (year 2017) was performed. Image processing included the preprocessing (radiometric and geometric corrections), processing (definition of coverage classes, color composition, identification of training sites, coverage classification phase) and post-processing (post classification analysis (ERDAS), accuracy test, identification of land use changes, deforestation analysis, map generation). The following metrics were used to perform the fragmentation analysis: Number of patches (NP), Major patch index (LPI), Edge density (ED), Medium form index (SHAPE_MN). The results show that there is a loss of 5,000 hectares of forest during the study period, due to oil activities and transport networks. The annual deforestation rate of AP was 17.97 ha (-0.0025%) and of ANP it was 5.90 ha (-0,0009). Regarding to fragmentation metrics, the Major Patch Index (LPI), in 1987 for the unprotected area (ANP) obtained a total of 95% indicating that it occupies approximately 100% of the total area fragment, for the In 2017, 79.7% was obtained, indicating that the fragment size has decreased in the area. Concerning to Edge Density (ED), an increase was observed both in the ANP area and in the AP, which makes the study area more conducive to the movement of different species that inhabit that place. In conclusion, greater anthropic intervention was observed in the ANP, which makes the native forest more vulnerable, therefore, there may be greater deforestation and fragmentation in this area of the country. Keywords: Vegetation cover harbors, deforestation, fragmentation. |
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