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Universidade Federal do Rio Grande do Norte (UFRN) 2022

Estado ambiental e graus de sustentabilidade da bacia hidrográfica do Rio do Carmo-RN, Brasil

Miranda, Marcellus Silva Arruda

Titre : Estado ambiental e graus de sustentabilidade da bacia hidrográfica do Rio do Carmo-RN, Brasil

Auteur : Miranda, Marcellus Silva Arruda

Université de soutenance : Universidade Federal do Rio Grande do Norte (UFRN)

Grade : Mestrado em Geografia 2022

Résumé
The current stage of the development of global society implies significant transformations in local landscapes. The introduction of new rationales in the structure and functioning of landscapes has, as a result, the emergence of serious damages in all spheres of the landscape system. In front of this scenario, Landscape Geoecology, observing the different stages of occupation and intense transformation of the systems, has contributed greatly to the analysis of the optimization, recovery, and preservation processes of different systems. The Rio do Carmo Hydrographic Basin (RCHB), located in the hinterland portion of the state of Rio Grande do Norte, has a variety of landscape units and economic activities, which significantly affect the environmental status of the basin. From this, using Geoecology as a theoretical-methodological guide, this research aims to analyze the environmental status and degrees of sustainability of the RCHB. For this, in order to obtain better results, the RCHB was compartmentalized, based on the relief taxon, into 6 geoecological units, namely : (I) Sertaneja Depression do Carmo, (II) Mountains and Inselbergs, (III) Serra do Mel Plateau, (IV) Interiors Tabuleiros, (V) Marine Fluvial Plain, and (VI) Fluvial Plain. For the interpretation of the environmental status, the analyzes were carried out on a regional and local scale, which made it possible to delineate relationships between existing actions and impacts, based on the parameters established by Conesa (2010). As main results, we highlight the presence of an evolutionary framework with environmental damage in the Fluvial and Marine Fluvial Plain and in the Interiors Tabuleiros, with the main impact promoters being the mineral sector, the salt industry, and agriculture. Based on the results, it is expected that the framework presented in this study can be used by municipal managers to propose sustainable actions in the basin, in order to improve its environmental status.

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Page publiée le 16 janvier 2023