Evaluation of Unmanned Aerial Vehicles (UAV) as a Tool to Predict Biomass and Carbon of Tectona grandis in Silvopastoral Systems (SPS) in Costa Rica

The main objective of this research was to evaluate the use unmanned aerial vehicles (UAVs) in estimating aboveground biomass and carbon, dasometric characteristics at three different spacings (2.5 m × 1.0 m, 2.5 2.0 3.0 m) a silvopastoral system (SPS) for production Tectona grandis. A total 90 trees were sampled, 63 which used perform evaluation (vertical horizontal) spacing test an SPS, rest UAVs test. results showed significant differences average diameter breast height (dbh) between spacings, per tree. amount carbon hectare increases smaller but not statistically significant. logarithmic model prepared estimate dbh based on crown from data collected taken field, since variable by means is difficult. Significant found estimated using field compared UAV data. estimation selected trees, hindered canopy closure adequate, could influence