SYSTEM BASED ON FUZZY RULES AS A SUPPORT TOOL FOR THE APPLICATION OF CONAMA RESOLUTION 04/94.

The regeneration stages of secondary forest and primary forest are defined by CONAMA Resolution nº 04/94, in the case of the State of Santa Catarina, and play a fundamental role in the correct application of Federal Law nº 11,428/2006 and consequently in the management of forest resources of the Atlantic Forest Biome. However, given the complexity and uncertainties surrounding the forest succession process, Fuzzy Rule-Based Systems, developed from legal parameters and incorporating expert knowledge, can be important support tools in defining successional stages. For this purpose, a specialist model consisting of two indicators was developed, one for the structural parameters (DBH, Basal Area and Height) and the other for the qualitative ones (physiognomy, canopy structure, diversity, epiphytes, climbers, litterfall and understory). To verify the proposed model, data from 466 sampling units from the Forest Floristic Inventory of Santa Catarina – IFFSC were used. The results obtained by executing the model showed that the adopted structure can express the regeneration process, assisting in the decision-making process. A higher concentration was observed in the classification of intermediate stages of forest regeneration (medium and advanced). Comparing the regeneration stages resulting from the application of the model with those defined by applying the formula proposed by IFFSC, there was a correspondence in 72% of the cases. The model appears to be sensitive to the adoption of interpretation scales for defuzzified values..