Climatic and Environmental Reconstruction Based on Stable Isotopes of Parishan Lake (Iran)

The isotopic documents of lake deposition are suitable potential means for studyingthe intercontinental, environmental and climatic conditions. In order to study theenvironmental and climatic conditions of Parishan area in Fars province in Holocene, a Corewas taken with the length of 2m from the Parishan lake sediment. From this core, kernel timeseries was provided from documents of carbon and oxygen isotopes. Results show that duringthe study period, climatic changes because gradual increasing in the value of ∂O18carb. Thisrepresents a weak dryness process in the area up to now. Contrary to this, carbon isotopedocuments during the study period show the more vigorous changes. Variability of ∂C13carbvalues during the study period is known as the result of changes in the value of evacuation ofunderground waters to the lake. As it is observed in the process at ∂O18carb throughout thestudy period, ∂C13carb values have an increasing process, yet the observed changes in ∂C13carbvalue are more vigorous than ∂O18carb and it seems that variation of underground waters wasnot in complete harmony with dryness process of the area. It seems that achievement ofunderground waters around the lake in the form of well and aqueduct is the intensify factorfor the reduction of underground inputs to the lake.