Resilience of wood volume of commercial species in different experimental areas in the Eastern Amazon
DOI:
https://doi.org/10.6008/CBPC2179-6858.2019.006.0003Keywords:
Low impact exploitation, Dryland forests, Silvicultural treatmentsAbstract
The aim of this study is to evaluate the behavior of wood volume in different groups of commercial tree species over time in experimental areas in the Brazilian Eastern Amazon. Volume dynamics were analyzed at Flona Tapajós, Monte Dourado-Jari Forest, Moju Forest and Rio Capim Farm. Forest inventories of tree species from 20 cm diameter were carried out. These inventories were carried out at different years before and after logging in each experimental area. Data were analyzed for diameter classes between 20 and 49.9 cm, to characterize the wood stock reserved for future exploration, and another class with DBH trees ≥ 50 cm to characterize the volume of the present harvest. Volume equations were calculated. The categories of commercial tree species groups were G1, G2, G3, G4 and G5 and this classification was performed by the commercial tree species found in the study areas compared to the commercial tree species found in Pará (2016). The volumes were by categories of commercial tree species groups over time, silvicultural treatments and diameter class. The results found varied according to silvicultural treatments, diameter class and periods. Through the study it is possible to affirm that the forest is capable of having its volumetric resilience, since it was observed in these study areas that most commercial tree species in different silvicultural treatments increased their volume after 30, 26 and 18 years of reduced impact logging.
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