Sustentabilidade ambiental da extração de áridos: a lavra de areia no canal ativo do Rio Canindé - Paramoti - Ceará

Abstract

This study analyzes the environmental sustainability of sand extraction along the active bed of Canindé river, Paramoti municipality, Ceará. The mined material was sampled, characterized and qualified for use as aggregate in construction. The deposit was cubed, resulting in measured reserves, indicated and total one. The sand extraction is carried out continuously in the active bed of the Canindé river, since the sixties and at the end of each rainy season reservations are renewed. The environmental impacts were carefully identified and valued using as basis the measurement of their character, their magnitude and duration of action. Unlike other places of extraction, removal of sand hereof brings many benefits to the local community and the environment. The deepening of the river channel upstream of the city of Paramoti, minimizes the impact of floods in periods of more intense rainfall. The water retained serve to supply nearby communities, deprived of the resource. With the deepening of its bed the river retains the flow of sediment flowing with water each year and prevents that the material reaches the reservoirs located downstream, and its premature silting. It is recommended the monitoring, supervision and control of all actions related here because they are of fundamental importance for the continuity of economic and environmental viability of the venture.