## 4 Results
### CO\({}_{2}\) Sequestration Estimates and Errors
#### 4.4.2 Actual CO\({}_{2}\) Estimates Considering the Errors
Similarly, those percentages of the total area were subtracted from the coniferous forests and added to the evergreen and deciduous broadleaf forest classes (this is determined as the minimum status). Again, at this point, the maximum deciduous and evergreen broadleaf statuses were determined. The dependency of the classification results to errors in estimates of sequestration were assumed in this method. As a result, the minimum total sequestration was 75.80 Mt-CO\({}_{2}\), while the maximum was 127.11 Mt-CO\({}_{2}\). Here, the sequestration value by tree age class for each forest type does not change, and only the total area of the forests fluctuates. We can see how the total size of the forested area is one important factor that contributes to total sequestration. Errors of the backscattering model were considered from the developed RMSE model, which resulted in 105.58 m\({}^{3}\)/ha. According to the stem volume-tree age curve information, the difference of stem volume results in 6-year, 7-year and 10-year differences for the coniferous trees on site 1, site 2 and site 3, respectively. Using this information, the estimation of the CO\({}_{2}\) in coniferous forests was re-assessed by shifting the age range by the above tree age year difference. The minimum and maximum then became 65.46 and 99.81 Mt-CO\({}_{2}\), respectively. The total CO\({}_{2}\) was then calculated using these values along with the total values of other forest types (deciduous broadleaf (DBL) and evergreen broadleaf (EBL)). The \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multirow{2}{*}{
\begin{tabular}{c} **Error** \\ **Types** \\ \end{tabular} } & \multirow{2}{*}{**Forest**} & \multirow{2}{*}{**Coniferous**} & \multicolumn{2}{c}{**Deciduous**} & \multicolumn{2}{c}{**Evergreen**} & \multicolumn{2}{c}{**Total CO\({}_{2}\)**} \\  & & & \multicolumn{2}{c}{**Broadleaf**} & \multicolumn{2}{c}{**Broadleaf**} & \multicolumn{2}{c}{**Sequestration**} \\ \hline \multirow{2}{*}{Land Cover Mapping} & Min\({}_{\text{tot}}\): & Max\({}_{\text{tot}}\): & Min\({}_{\text{tot}}\): & Max\({}_{\text{tot}}\): & Min\({}_{\text{tot}}\): & Max\({}_{\text{tot}}\): & Min\({}_{\text{tot}}\): & Max\({}_{\text{tot}}\): \\  & 50.94 & 89.67 & 20.29 & 25.50 & 4.57 & 11.94 & 75.80 & 127.11 \\ \hline \multirow{4}{*}{Backscattering Model} & (Avg\({}_{\text{val}}\)) & (Avg\({}_{\text{val}}\)) & & & & & & Min\({}_{\text{tot}}\): & Max\({}_{\text{tot}}\): \\  & Min\({}_{\text{tot}}\): & Max\({}_{\text{tot}}\): & N/A (21.61) & N/A (4.76) & & 91.83 & 126.18 \\ \cline{1-1}  & 65.46 & 99.81 & & & & & & & N/A \\ \hline Tree Age Curve & \multicolumn{2}{c}{N/A} & \multicolumn{2}{c}{N/A} & \multicolumn{2}{c}{N/A} & \multicolumn{2}{c}{N/A} & \multicolumn{2}{c}{N/A} \\ \hline \multirow{2}{*}{Sequestration Value} & Min\({}_{\text{tot}}\): & Max\({}_{\text{tot}}\): & Min\({}_{\text{tot}}\): & Max\({}_{\text{tot}}\): & Min\({}_{\text{tot}}\): & Max\({}_{\text{tot}}\): & Min\({}_{\text{tot}}\): & Max\({}_{\text{tot}}\): \\  & 78.80 & 90.97 & 7.38 & 31.94 & 6.55 & 14.78 & 92.73 & 137.69 \\ \hline \multirow{4}{*}{Backscattering Model} & (Min\({}_{\text{val}}\)) & (Min\({}_{\text{val}}\)) & & & & & (Min\({}_{\text{val}}\)) & (Min\({}_{\text{val}}\)) \\  & Min\({}_{\text{tot}}\): & Max\({}_{\text{tot}}\): & & & & & Min\({}_{\text{tot}}\): & Max\({}_{\text{tot}}\): \\ \cline{1-1}  & 64.65 & 91.45 & & & & & 91.02 & 117.82 \\ \cline{1-1} \cline{1-1}  & (Max\({}_{\text{val}}\)) & (Max\({}_{\text{val}}\)) & & N/A (21.61) & N/A (4.76) & & (Max\({}_{\text{val}}\)) & (Max\({}_{\text{val}}\)) \\ \cline{1-1}  & 75.03 & 110.64 & & & & & 101.4 & 137.01 \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Summary of total CO\({}_{2}\) sequestration estimated after considering each possible error source. estimation was made only for the coniferous forests in this case because the actual error values of the model developed by [PERSON] [38] were not found.