Diagnóstico físico-conservacionista do ambiente cárstico da bacia do córrego Cana-Brava, Aurora do Tocantins - TO

Abstract

Environmental degradation can be caused both by anthropogenic activities such as natural processes. Currently it is possible to note a growing increase in the degradation of the environment, which is mainly related to the development of human activities. There are environments more vulnerable to degradation due to its fragile nature. The karst terrains consist in environments too fragile, because the hydrological karstic system is highly vulnerable to pollution, due to its physical characteristics of drainage predominantly vertical and absence of layers that filter the water before their arrival to aquifers. In addition, due to the presence of rocks highly solubles, can occur landslides and soil erosion in these locations, which suggests a greater attention to these environments. The main objective of this work was to be done through necessary adjustments, the physical diagnostic-conservationist of karstic environment of the creek watershed Cana-brava, in the municipalities of Aurora do Tocantins and Lavandeira, aiming to contribute to a better understanding of karst in the State of Tocantins, in addition to serving as a support for the development of guidelines and strategies for action targeted at the environmental preservation of the study area. The methodology of physical diagnosticconservationist (DFC) search diagnose the actual situation of renewable natural resources in a given geographical area and provides concrete indicative for the management and rational use of renewable natural resources of the watershed. The results obtained in this study indicate that the efficiency in the use of the methodology of physical diagnostic-conservationist for the karst environment. In spite of the adjustments required due to peculiarities of the study area, this methodology has met the objective proposed that consisted in measuring the potential of physical degradation of a watershed, although it is located in a karst environment. Before the finding of the physical degradation of the creek watershed Cana-brava, suggests to competent bodies to adoption of measures to contain and/or revert the situation of degradation, given the importance of preservation of karst topography, since, the conservation of these environments is directly related to the quality of the surface water and groundwater due to its physical characteristics. It is also worth pointing out the importance of preservation, given the contributions archaeological, paleontological and anthropological, in addition to the tourist potential of these environments.