Usage and coverage of land and the desertification process in the regional Jeremoabo-ba Region
DOI:
https://doi.org/10.51359/2238-6211.2020.246142Keywords:
landscape; drylands degradation.Abstract
In the game of relationships between society and the nature in dry lands, environmental unsustainability of the human practices, techniques and technologies set up scenarios of desertification in different spatial scales, whether local, national and regional. Through this research soil use and coverage as an environmental indicator of desertification on Jeremoabo Regional Pole, State of Bahia, were analyzed. The soil use and coverage map was constructed from the interpretation of LANDSAT-8 images, associated with the field data. Some tests were conducted for the definition of the classes of maps, according to the data of field, image resolution, scale of map and cartographic references on the subject. Agriculture is a suppression factor of vegetation in favor of the expansion of agricultural and cattle raising fields, which extend over 15,400 square kilometers, with indications of deterioration of vegetation and the environment, observable in the (re) classification of the vegetal features, with the anthropized qualitative, to point the pressure on the biodiversity. The high levels of degradation are equivalent to the classes of Exposed Soil and the Alluvial-fluvial Erosive Surface, resulting from the suppression of the vegetation cover on the Neosols, highly susceptible to erosive processes.
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