Abstract

PAULA, Pamela A.; ZAMBRANO, Luis  and  PAULA, Paulina. Multitemporal Analysis of vegetation change at Chimborazo Reserve as a result of climate change. Enfoque UTE [online]. 2018, vol.9, n.2, pp.125-137. ISSN 1390-6542.  https://doi.org/10.29019/enfoqueute.v9n2.252.

Climate change is a global problem that affects the state of conservation of ecosystems in all regions of the world; as well as in the Chimborazo Fauna Production Reserve, which is linked to anthropogenic activities inside and outside it, such as the extensive and intensive grazing of sheep and cattle that have caused effects on vegetation and soil given to the consumption of native plants and all ecosystem processes because they are related to each other. The methodology used to achieve optimal discrimination of vegetation change and conservation status is obtained through the application of satellite images LANDSAT 5, LANDSAT 7, orthophotos and aerial photographs from 1962 to 1966 up to 2010 distributed in three periods; using procedures such as supervised classification and the calculation of the Normalized Differential Index of Vegetation. Anthropogenic activity for the period 1962-1966 determines 0.26% and snow is 10.30%, while for the period 2010-2011, the percentage of intervention increases to 9.54% and the snow decreases to 4.46%, evidencing the loss of perpetual snow due to solar radiation.

Keywords : Satellite images; Normalized Differential Index of Vegetation (NDVI); Supervised Classification; Ecosystems..

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