O relevo, elemento e âncora, na dinâmica da paisagem do vale, verde e cinza, do Acaraú, no estado do Ceará / O relevo, elemento e âncora, na dinâmica da paisagem do vale, verde e cinza, do Acaraú, no estado do Ceará

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The present research aims at studying the hydrographic basin of Acaraú River, located in Ceará State. Its popularly known as Vale do Acaraú. The aforesaid area has as scenery, landscapes with several geomorphological traits, formed by the coast, sertaneja surface (inlands) and humid residual massifs.Performing a historical journey in Vale do Acaraú, the surroundings of the coast, the sertaneja surface (inlands) and the massifs provided in its physical and cultural aspects, an intense modification of the landscapes. The recolonization was undoubtedly a primary factor for acceleration of the landscapes dynamics. When Europeans immigrated through the coast, the vegetation was the first natural element to suffer an intense process of modification, since it was extracted and commercialized to Europe. Thereafter, on the sertaneja surface (inlands), the cattle breeding and cotton plantation were the principal modifier agent of the scenery of the local landscape. The influence of the relief, with regard to the humid residual massifs, enabled these areas for the plantation of castor bean and coffee, facts of which influenced in the formation of the scenery of the local landscape. In each type of land use, the marks of the erosive processes were taking shape in the scenery of landscapes, as well as new cultural relations were kept with the local people, adapting the manners to the current relations.In such circumstances, its been determined the establishment of a reflection on a methodological basis which regarded the understanding of the organization of the landscape of Vale do Acaraú, including the agricultural practice in its social-cultural and physical-biotic aspects. And, therefore, analyzing the organization and the landscape dynamics of Vale do Acaraú from the use of the agricultural soil in its empiric, cognitive and experimental bases. Thus, the categories relief and landscape were determined with the objective of analyses, being Sauer and Bertrand able to reflect them through their subsidies. From that moment on, a methodological basis has been proposed.Three areas with the objective of analysis were delimitated, mapping them in its natural aspects. The criterion of choice of the areas took place concerning the geomorphological compartmentation, being selected: (a) Monsenhor Tabosa, in humid residual massifs environment, (b) Varjota, in sertaneja surface (inlands) environment and c) Morrinhos, in coastal environment. In the aforesaid areas, 300 questionnaires and interviews were applied, 100 in each area. An experimental field was disposed with the objective of quantification of losses of soils in several practices of management in each area. The monitoring of the experiment occurred in the period of two years and only in rainy season.Due to the data obtained, it was possible to observe the influence of the relief as a condition of support and usage of natural resources by the farmer. Fact of which enabled the reflection of the organization and the landscape dynamics in an integrated way in each geomorphological compartmentation

ASSUNTO(S)

bacia hidrográfica (estudo) - ceará; geomorfologia geomorphology; hydrographic basin (study) - ceará

ACESSO AO ARTIGO

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