Áreas de Preservação Permanente e seus serviços ambientais

Abstract

The Permanent Preservation Areas (APP), along watercourses, are determined based on the width of these. However, it is believed that there are more relevant factors, such as environmental services offered by APPs. The present study sought to compile studies that address environmental services from the APPs, such as subsidies for a better understanding on the subject. It was observed that, although there are equations for estimating the minimum width of APPs, some authors argue that the lack of a definitive method for establishing this width that allows for satisfactory protection of the watercourse. Some claim that without studies of the dynamics that occur in the riparian area, there is no way to conclude the distances expressed numerically for APPs are consistent with the principles of preservation for which they propose. Due to different methodologies and parameters involved in the delimitation of APP, are distinct bands of width settings for the same function in the same section of river. Thus, it is considered that one can only make widths indicative of areas to be kept vegetated or revegetated depending on the type of environmental service than expected, without, however, having to determine the proper width to serve simultaneously to all the services.