Effect of Land Uses on Aboveground Biomass and Carbon Pools in Zagros Forests, Iran

Aims: Different types of land use have different effects on carbon stored in their pools and Co۲ . We compared carbon storage in different pools (tree, litter, and soil) across main land uses Mishkhas watershed in the of Ilam province, Iran. Materials and Methods: Oak forest (Quercus brantii Lindl.; Lu-F) and orchard (Juglans regia L; Lu-O) in ۴ different ages were determined for estimation of carbon stocks in tree biomass, the litter, and ۲۰ cm depth of soils in two land uses. Findings: The results showed that total carbon stocks in Lu-O ecosystem (۶۸.۷۵ Mg ha-۱) than Lu-F (۴۱.۲۲ Mg ha-۱). In general, soil at the two land uses was as estimated about ۹۱% and (۳۷.۶۱ Mg ha-۱) ۸۲% (۵۷.۰۱Mg ha-۱) total carbon stocks in Lu-F and Lu-O, respectively. The above ground biomass of trees was as and contained a lower contribution of total carbon stocks (roughly ۶% and ۱۵% in forest and orchard ecosystems). The least carbon , about ۲% of the total carbon stocks in Lu-F and Lu-O occurred in litter due to the grazing intensity. Conclusion: As a conclusion, our findings confirm that land use type can significantly effect on carbon stocks in different pools. Therefore, management strategies are needed to enhance the forest carbon sequestration in Mishkhas watershed of Ilam province.

کلیدواژه ها:

Tree biomass ، Litter carbon ، Soil organic carbon stock ، Oak forests ، Juglans regia