Abstract: Comparative analysis of tree-ring chronologies on the variability of the short-term component is based on the calculation of synchronicity coefficients. The study of the regularities of the variability of tree-ring chronologies on this basis in natural cenopopulations is important for establishing the reaction rate of this indicator. This is significant for the further progress of dendrochronological and dendroclimatic studies, improving the methods of forensic botanical examination using dendrochronology methods. In the study, this issue was studied on the basis of chronologies from different phytocenoses with the predominance of scots pine in the stand. The trial areas were located on the territory of the Muromtsevo forestry of the Vladimir region. The study was carried out as part of the implementation of R&D Rosleskhoz (2008-2011). The main parameters of the frequency of occurrence of different variants of the values of the synchronicity coefficient were established. The regularities of the frequency of occurrence of different values of the synchronicity coefficient depending on the type of forest are also established: The range of variation of values between groups from different types of forest is small and amounts to several percent. The data obtained are important for solving the following practical tasks: monitoring the accuracy of measurements of annual rings on individual wood samples; establishing the date of termination of cambial activity in the trunk of a tree; establishing the date of construction of wooden buildings; dating of archaeological wood; dating the time of creation of art objects; diagnostics of the condition of the tree at the time of cutting; establishing the time of cutting the tree; establishing the drying time a tree.