Abstract:
Climate change, which has negative effects on wet and dry ecosystem is one of the most important challenges in sustainable development. The increase of atmospheric Carbon dioxide is the main cause of this phenomenon. The mass of 20 year old walnut trees and adjacent rangeland (control) with overcoming coverage Astragalus parrowianus and Acantolimon erinaceum in the city of Shahmirzad of the Semnan province was chosen to study the effects of land use change on carbon sequestration. The sequestered atmospheric carbon dioxide was measured at biomass (aerial and underground), compost and soil (0-15 and 15-30 cm layers). The results show that in working unit one there were 116.54 t ha-1 of sequestered carbon in the orchard and 74.58 t ha-1 in the rangeland. In working unit two there were 130.15 t ha-1 in the orchard and 71.305 t ha-1 in the rangeland. This caused carbon sequestration to rise by 41.69 t ha-1 in working unit one and 58.845 t ha-1 in working unit two. Walnut tree aerial biomass had the most Carbon sequestration. The most important factors affecting the soils organic carbon were organic material content, Ec and percentage of silt and sand. There were meaningful and positive relations between the soils organic carbon and organic material in soil. The results show that the land use change had a significant effect in raising the total carbon sequestration in the region.
M. Abdipour, S.M. Hoseini, H. Kaboli and M. Kia Kianian, 2015. Effect of Land Use Change on Carbon Sequestration: A Case Study in Shahmirzad Walnut Orchad, Semnan, Iran. Research Journal of Soil Biology, 7: 1-12.