Planejamento do uso racional dos recursos naturais da microbacia hidrográfica do riacho Val Paraíso-PB, através de mapeamento geoambiental.

Abstract

The study aims, through the elaboration of a geoambiental map, include drainage information, topography, geology, soils, geomorphology, surface features, land use, permanent preservation areas and conflicting using areas, watershed for the creek Val Paraiso - PB, to help in developing strategies and actions that may trigger a future process of environmental planning and management. The theoretical and methodological approach in this study was based on a holistic view, looking at the theory of a synthesis of multicomponent systems in an integrated geoambiental analysis. The watershed Val Paradise belongs to sub-basin of the Rio do Peixe and comprises an area of 7,962.97 ha and is located in the northwest portion of the Paraíba state, northeastern semiarid. This region shows serious cases of environmental degradation associated with the fragile natural and anthropogenic. The map was prepared by geoambiental Geographical Information System IDRISI 32, developed by Clark University (1994), topographic based maps, the image sensor Quickbird dated 2004, auxiliary maps and field work. The watershed is composed of sedimentary and rocks crystalline, with soil that, in most, have problems with drainage, high levels of clay and salts. The topography varies from mild to undulating wavy, showing problems with different uses and environmental deterioration. About 50% of the watershed area is conducive for agriculture and grazing, but the region suffers from shortage of water and native vegetation. An analysis of the attributes of the physical environment and integration of these seven were established geoambientais, with the presentation of its weaknesses and potential locations. These units were represented by a Geoambiental Map.