Mathematical model of dynamics in the deciduous forest

Simulation Model of 137Cs Daily Dynamics in the Food Web of the Deciduous Forest Ecosystem

“…Models notionally termed the physiological models, which are meant to reproduce to various extents the actual processes of radionuclides' input to plant or animal body and their redistribution in tissues and subsequent elimination, could become a more reliable alternative to those using the dose accumulation factor. Models of this types have already been developed for plants (see, e.g., [10,12,24,36]). Model of 137 Cs dynamics in the bodies of livestock, specifically, horses and sheep, can serve as an example of the physiological model of radionuclides' behavior in the body of animals [23].…”

European decision support modelling of long-term external doses received in inhabited areas contaminated by a nuclear power plant accident – 2: Post deposition contaminant mobility on outdoor surfaces

“…Nearly half of the contamination on trees or shrubs will according to literature generally be removed with a short half-life, of about 30 days with a standard deviation of about 2 weeks (Mamikhin & Klyashtorin, 2000;Nygren et al, 1994;Roed, 1988). It would seem reasonable to assume that the mechanism largely responsible for this transfer is the first heavy rainshowers (Roed, 1988).…”

“…It would seem reasonable to assume that the mechanism largely responsible for this transfer is the first heavy rainshowers (Roed, 1988). A small part of the order of 4 % (estimated standard deviation of 4 %) is assumed to remain on the tree/shrub largely until it is felled (Mamikhin & Klyashtorin, 2000;Roed, 1988), and the rest is assumed to have a weathering half-life of some 1.7 years, with an estimated standard deviation of about 1 year (Mamikhin & Klyashtorin, 2000;Linkov et al, 1997). There may possibly be some species of trees for which this is not quite true, but the data available is sparse.…”