(PT) Avaliação da eficácia de métodos de reflorestamento em uma barragem de rejeito de Manganês Floresta Nacional de Carajás/PA

Author(s): RIBEIRO, Rafael de Almeida
Summary: Start a process of forest succession from a degraded area without any facilitator components of such processes, so that it presents, over the years, the most similar as possible to that forest composition before the intervention was caused by the mining activity, seems to be unlikely, if not impossible. The objective of this study is to evaluate two traditional models of rehabilitation used in the same area, side by side. The techniques evaluated were implemented in December 2000, in the Carajás Complex Miner / Pará State - Brazil, in one of the tailings dam embankments of the “Azul” Manganese Mine, Kalunga Dam, which reached the end of its useful life and was made available to environmental area for recovery. The experiment was conducted in an area of 6ha, where the 3ha were directly seedlings planted on the waste of manganese and in the other 3ha, 30cm of topsoil were added of vegetation removal fronts with litter and antlers in 6 installments (islands) of 2500m² (50mX50m). Was evaluated the development of vegetation cover in these areas, 14 years after implantation, as well as the diversity of species, their wealth and vertical and horizontal structure. The results were compared to a primary forest testimony area, located in similar topography and climate conditions within the Manganese Mine (Mina de Manganês do Azul). It also assessed the general characteristics of the substrate (soil) formed in each treatment. The results, especially in the treatment of soil islands, was evidence of efficient processes with regard to ecological restoration of a very degraded environment, where one can observe the return of the diversity and dynamics between species, is promoting the forest succession from one area to a state of a forest area with promising progress
Year: 2015
Pages: 83 f.
Link: http://pergamum.itvds.org:81/vinculos//000009/00000964.pdf
Year of publication: 2015
Supervision: Dr. José Oswaldo Siqueira
Link to PDF: Click here
Course: Master's Degree in Sustainable Use of Natural Resources in Tropical Regions