A Modiﬁed Algorithm for Estimating the Radial Cell Size in the Vaganov-Shashkin Simulation Model
To describe the mechanism of tree-ring formation in woody plants inﬂuencing by the leading environmental factors is one of the most urgent problems of modern dendroecology. Changing of the tree-ring growth rate at selected intervals in the growing season is determined by the complex inﬂuence of climatic factors (e.g. temperature and soil moisture). Using the modiﬁed algorithm of the simulation model of growth Vaganov-Shashkin - VS-oscilloscope seasonal growth of cells in tree ring is simulated in the work. New mathematical approach is developed to estimate a cambial activity and seasonal cell production of conifer species. The approach is tested on tree-ring sample of Pinus sylvestris for Khakassian region over 1969-2008. The obtained approach allows to separate a tree-ring growth signal on two components caused by climatic and non-climatic factors.