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An introduction to the distribution of carbon stocks in temperate broadleaf forests of northern Iran

Northern forests of Iran are among the most important plant communities in Iran due to their dynamic and diverse vegetation composition and fertile soils. There is little information about carbon stocks of these forests. In the present study, aboveand belowground carbon stocks of trees, litter, herbs and soil organic carbon stock at three selected sites of these forests were calculated using random plots and non-destructive sampling. The FAO method was used for carbon estimation of trees and Walkley-Black method was used for soil carbon stock and carbon coefficient was estimated directly. The results showed that both the tree carbon stocks and soil carbon stocks increased from east to west with increasing altitude, showing significant differences. The results also indicate that these forests have a high carbon sequestration potential as a green belt across the northern slopes of the Alborz Mountains, when the contribution of the aboveground section was greater than that of the belowground section (soil and roots) at all sites.