Determinação do preço do potencial madeireiro e a estimativa do carbono da concessão florestal Langa Lda.

Abstract

The lack of transparency in the Mozambican forestry sector does not make it possible to calculate the volume of cut wood, the volume of wood exported and the amount of money obtained from the export of the same resource, which prevents the determination of the profitability of the sector. Thus, there are few studies developed in the country, aiming to deepen the value / price of the wood potential, as well as knowledge of the estimates of the amount of carbon in the forest areas. The present study intends to determine the price of the timber potential and the amount of carbon from a forest concession. The study was carried out at the Forest Concession Panga Lda. Located in Cabo delgado province, Montepuez district, at the administrative post from Nairoto. The data were obtained thanks to the forest inventory carried out in the second semester of the year 2014, which consisted of a stratified random sampling through the installation of rectangular plots of 250 x 20m each. Based on data from the forest inventory, it was if the allowable annual cut (CAA), the net present value (NPV) that was determined from the costs of the inventory and the management plan, as well as the collection of revenues from the sale of commercial species (1st, 2nd and 3rd class). The discount rate chosen for calculating the NPV was 12% per year, and a sensitivity analysis was carried out in order to assess the impact of the variation of prices and interest rates in the value of the resource. The amount of carbon was also estimated using the biomass expansion factor method. The allowable annual cut (CAA) for a 30-year cutting cycle was 15,186.77m 3 / year from the 15 commercial species found in the forest concession. The financial value of the forestry timber resources of the concession over a 30-year period of the cutting cycle, was US $ 23,674,995.18. Bigger financial value was verified when wood prices were increased by 20% and lower when if prices decrease at the same rate. The amount of carbon was estimated at about 98.42 t.ha -1, corresponding to the total carbon that can be found above the ground in every area inventoried forestry. It is concluded that the forest resources of the concession have a high timber potential. The concession's forest area also has a large amount of above-ground carbon.(TRADUÇÃO NOSSA)