Análise ambiental da bacia hidrográfica do rio Missi em Irauçuba – Ceará uma contribuição ao uso de suas terras

Abstract

The basin of Missi river (BHRM) covers an area of 148.4 Km2 standing between latitudes -3, 7° and -3, 8° and longitude – 40°, and -39, 7° and is fully inserted into the Northwest portion of the Irauçuba city in North Central region of the State of Ceará in Sobral microregionThe state of Ceará is not an exception, being one of the states that most suffers from desertification, especially in the hinterland. The uncontrolled exploitation of resources is reflected in the depletion affecting the dynamics of environmental systems, impairing the quality of life of millions of people. Considering the region climatic conditions, the watershed of the Missi River located in Irauçuba municipality in the North Central region of the State of Ceará, in the Sobral micro-region, comprises an area 1.461,22 Km², located between latitudes 3º 44 '46" South and longitude 39º 47' 00" West, at an altitude of 152.52 meters, has a very shallow soils and degraded vegetation and is also characterized by having rainfall below 550 mm/year, with severe water deficit. The environmental analysis of the study area, the watershed of the Missi River, will be based on the characterization of geo-environmental components. The combination of these elements creates a variety of effects that make the study area different to the regional context, particularly in semi-arid Ceará. In this context, it is important to understand the components of the environmental system of the basin, taking into account the issue of exploitation of natural resources sustainably enhance its planning. Therefore, it is important to recognize the components of the watershed environmental system, considering the sustainability of natural resources exploration through enhanced its planning mechanisms. However, this research considered on its main objective the development of an environmental study in the basin of Missi River through a systems approach and analysis of environmental parameters such as subsidies to environmental zoning and through the study look specifically: characterization of the study area by mapping thematic and geo-environmental parameters (geology, geomorphology, climate, soils and vegetation); conduct a socio-economic characterization from land use; propose ways to use the basin based on soil analysis, and propose an environmental zoning for land use planning.