Proposição de um índice para avaliação de projetos de recuperação de áreas degradadas

Abstract

Projects of Recovery Degraded Area (PRDAs) are important initiatives within the conduction of environmental damage repair resulting from the investigation of infractions committed due to the suppression or intervention of vegetation carried out against the law. However, it is common those PRDAs presents low efficacy, due to the lack of technicalscientific bases in the PRDA elaboration and execution associated with the bad maintenance post-planting. Aiming to identify criteria for analysis and monitoring of PRDAs, we sought, through the use of pre-established technical parameters that described if the execution of the PRDA was producing adequate results, evaluate the degree and the effectiveness of PRDA execution, evaluated at two different times, located in an Altitude Wetland, in the city of Belo Jardim, PE. Several actions oriented according to the information pyramid proposed by Hammond et al. (1995) were used to organize the collected data and to evaluate the information and results obtained about the PRDA in execution, namely: i) consolidation of the primary data in a table of floristic composition that made it possible to verify the use of species whose ecological factors are important in the process of recovery degraded areas and in graph of statistical summary of the variables collected in the PRDA evaluation that provided important information about the distribution of observations in each category; ii) data analysis, through the use of correspondence analysis, which allow to identify the existence of relationship between the sampled individuals of the forest species planted and the silvicultural management actions performed in the forest maintenance, as well as highlighting the main relationships that conduct the establishment of vegetal native cover in formation based on the average behavior of a group formed by the most observations with categorical variables that indicate good vegetative development and good control of weed competition, highlighting the indicative of good progress of PRDA execution; and iii) determination of environmental yield coefficients (EYC) and index of evaluation of project of recovery degraded area (IEPRDA), which validated the correspondence analysis, presenting satisfactory results in terms of vegetative development and good control of weed competition with small differences in terms of development vegetation and good control of weed competition betwen the two evaluations carried out, but maintaining the prognosis that the PRDA is being well conducted and presenting results considered adequate.