Forest treatments and wood volume in an experimental forest area in Jari, Amapá
DOI:
https://doi.org/10.6008/CBPC2179-6858.2019.006.0006Keywords:
Impact of Reduced exploration, Cycle cutting, Basal Area ReductionAbstract
The need to apply silvicultural treatments and the lack of studies based on community ecology has motivated researchers to develop new techniques at a lower cost and with better results. The objective of this work is to analyze the effect of silvicultural treatments on the volumetric dynamics of commercial and non-commercial tree species after logging in an experimental area of Embrapa Eastern Amazon in Vitória do Jari, Amapá. The experiment was started in 1983 with pre-existing inventory exploratory. Volume class means were compared by Tukey test at 5% probability level. In 20 years of study, it was found that there was no significant difference between the means and comparing 1984 with 2011 the volume increased by 1.2% exceeding the initial volume. The forest recovered its total volume in less than a 35-year cutting cycle, however, the low number of commercially exploited species, which are unable to recover the commercial volume and basal area, coupled with the low yield in their processing in industry, makes that these species take longer to be explored by raising the cutting cycle to over 35 years. Valuable species on the market with low abundance and slow growth may disappear in the near future if not given greater attention in forest management plans. Therefore, appropriate felling cycles should be established for each forest species
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