A desertificação do alto sertão de Sergipe no contexto geográfico

• Autor(a) principal: Oliveira, Alberlene Ribeiro de
• Data de Publicação: 2017
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UFS
• Texto Completo: http://ri.ufs.br/jspui/handle/riufs/8614
• topic: Geografia ambiental; Desertificação; Natureza; Influência do homem; Paisagens; Geologia ambiental; Natureza-Sociedade; Dinâmica socioambiental; Degradação ambiental; Nature-Society; Desertification; Social environmental dynamic; Environmental degradation; CIENCIAS HUMANAS::GEOGRAFIA

The relationship among nature and society is confrontational and can cause process of desertification in areas that, on the other hand, is complex and shows a dynamism that destabilize the balance of physical, biological, social and economic ways. Brazil, specifically brazilian northeast is formed by desertification nucleus, analyzed in their multiples and particular aspects, and, in Sergipe, the high backwoods from Sergipe represents the most susceptible area. The changes in the periodicity of climate seasonality, associated with the use and occupation of land, demonstrated the important manifestation related to desertification. In this sense, this thesis analyze the transformation in natural and anthropic that can originate nucleus of desertification. The method adopted to understand the object of the study was the systemic approach, aiming to obtain a geographic, integrated and dynamic view. Therefore, the following methodological procedures were used: bibliographic, documentary and field research. The social environmental changes that happened in the landscapes of high backwood of Sergipe in the decades of 1980, 1990 and 2000 showed advances of degradation and new ways of area appropriation. Thus, the results presented demonstrated that in the High backwoods of Sergipe happens the ecological desertification, mainly in the districts of Poço Redondo, Canindé de São Francisco and northwest of Porto da Folha, that demonstrated the expansion of exposed soils and detrital pavements of rock outcrops, increased furrows and ravines, biodiversity reduction, salinity, decrease in the flow of water sources and water deficit. In the districts of Monte Alegre Sergipe, Gararu, Nossa Senhora da Glória and Nossa Senhora de Lourdes, is less intense, but the non-use of suitable techniques can advance and become irreversible over time. There also that the advance of environmental degradation emerged since de 90’s, with the excessive to carry out agricultural actitivities, causing occasional spots of desertification that were evolving. The conjunction of the socio-environmental processes mentioned helped to identify the decline in agricultural production over time, having as direct noticed consequences in this thesis were: infertile soil, reduction of cultivable land, migration to urban areas, mainly the youngest, due to the lack of perspective of quality of life in the field and unemployment.