reconstructing over a century of annual temperature of quercus persica ‎tree rings in zagros forests (case study of dena region)‎

in this study, we aimed to reconstruct the mean, maximum mean and ‎minimum mean temperature from the chronology of tree rings width of two ‎quercus persica sites in dena region, where efficient climatic data have a ‎short period (1982-2011). the duration of common chronology of the sites ‎is 131 years (1881-2011).considering the strong correlation between ‎climatic data and growth rings width (p < 0.01), with positive coefficient, ‎we attempted to reconstruct the variables using combined linear and ‎quadratic regression analysis and ring growth width from 1881 to ‎‎2011.accordingly, the highest maximum temperature was in 2001-2011 ‎decade and the lowest minimum temperature was during the decade 1981-‎‎1991.over the recent three decades, the average and the annual maximum ‎mean temperature had an increase of 0.5â°c and 1â°c in comparison to the ‎previous century and the average annual minimum temperature has had a ‎decrease of 0.2â°c.‎