Banca de DEFESA: RENAN FERNANDES MORETO

DYNAMICS OF CLEARINGS BASED ON REMOTE SENSING TECHNIQUES AND FIELD DATA IN FLONA DO JAMARI, RO

LiDAR, Permanent Plots, Clearings.

The Amazon Forest as a whole is made up of a series of plant formations that are, floristically, quite different from each other, conferring a range of biodiversity, as a rule greater than the other forest ecosystems in the world. Deforestation in the Brazilian Amazon is a widely accepted topic in the scientific literature and in recent years has been explored without control. As an alternative to the unbridled exploitation of forest resources, the Federal Government implemented the National Forests and the concession system for these green areas. The National Forest is an area with forest cover in possession and public domains, covering predominantly native species and has as its objective the sustainable use of natural resources and visitation is allowed in its region, encouraging scientific research. The structural analysis of a forest shows its horizontal and vertical composition, from both a qualitative and quantitative point of view, this is necessary, since, from it, correct techniques for sustainable management can be applied. Monitoring through permanent plots results in a series of information on growth, caused or entry of new individuals, mortality, structure, floristic composition and other ecological factors, with inventories being carried out before and after exploitation, for changes in structure and of the forest. Combined with permanent plots in a broader scope of monitoring, the use of remote sensing and geoprocessing techniques allows for faster data collection and analysis with an acceptable degree of accuracy. Thus, the objective of this work was to analyze the influence of gaps on forest dynamics through remote sensing techniques and field data. The study was carried out in the National Forest of Jamari in the Forest Management Unit III, For the study of characterization of gaps, LiDAR data were obtained from the Annual Production Units (UPAs) 02, 03, 04, 05 and 08 and with the purpose of the influence of gaps on the dynamics of remaining vegetation, data from permanent plots located in UPA 2 and 5 were used. There was a greater number of small gaps, while larger gaps are less frequent, showing a behavior of the negative exponential curve of distribution , a circular shape had a higher number of whites identified and a lower percentage of canopy opening. After six years of operation, UPA 2 had a greater increase in IPA and a higher rate of entry of individuals.