Estimation of aboveground carbon using active and passive satellite image in pure crimean pine stands: A case study in elekçami forest planning unit

This study was conducted in pure Crimean stands located within the boundaries of Sinop Regional Directorate of Forestry, Boyabat Forest Enterprise, Elekçamı Forest Planning Unit. A total of 247 sample plot inventory data were utilized. Using inventory data, aboveground carbon values were calculated for each sample plot. Then, for each sample plot, band brightness and vegetation indice obtained from the Landsat 5 TM satellite image, polarization (HH and HV) brightness and backscattering obtained from the ALOS-PALSAR satellite image, as well as slope, aspect, and elevation values, were calculated. The relationships between aboveground carbon values and the variables mentioned above were modeled using multiple regression analysis. A total of 14 models were developed. When examining the success of the developed models, the highest model accuracy (R_adj^2=0.655;Sy.x=0.18147) was achieved in the model that included vegetation indices from the Landsat 5 TM satellite image, brightness and backscattering values from the ALOS-PALSAR satellite image, along with slope, aspect, and elevation as independent variables.