Valoração ambiental da recuperação do rio poti no município de Crateús-CE

Abstract

The debate about the preservation of nature is increasingly high in society. With the support of economic models, it is possible to obtain values for environmental goods, favoring the establishment of protection mechanisms. In this sense, the present work aims to carry out the valuation of the Poti river specifically in the stretch located in the seat of the municipality of Crateús, whose river recovery aims to bring an improvement to the main river in the region. In order to arrive at the choice of the most appropriate valuation method, bibliographic surveys were carried out analyzing the advantages and disadvantages of some methods. The method selected for this work was contingent valuation, which is based on collecting data on a population by obtaining its preferences. From the choice of method, a questionnaire was applied with the target audience, the population of Crateús, and then data analysis was carried out. The measurement base used for the valuation of the Poti River was the maximum willingness to pay (DAP), captured from the contingent valuation method. The estimation of values was made from mathematical calculations and trends in willingness to pay were obtained using the logit model. After that, the monthly DAP value of R$1,407,759.11 and annual DAP of R$16,893,109.32 for the analyzed stretch of the Poti River was obtained, in addition to its value per hectare, which was R$12,786.19/ha per month, and the annual value is R$153,434.24/ha. The contingent valuation method showed that a significant portion of the Crateusense population has a good perception of the importance of the Poti River.