MODELING OF SPATIO-TEMPORAL VARIABILITY OF GEOSYSTEMS
A.A. Frolov
V.B. Sochava Institute of Geography, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russia
Keywords: epifacy, factor-dynamic series, epigeomer, dynamic states of geosystems, landscape-regional norm, doctrine of geosystems
Abstract
This paper examines the main features of classical structural-dynamic models (V.B. Sochavaʼs epifacy models, and A.A. Krauklisʼ factor-dynamic series systems) which represent equifinal and serial states of geosystems, trends in their transformation and dynamic relationships that have developed between geosystems in the landscape. A scheme of landscape development is described, on the basis of which various categories of “dynamic processes” are analyzed, affecting the increase and decrease in the degree of spatial and temporal changeableness of geosystems, as well as showing the mechanism for achieving the indigenous (equifinal) state by serial geosystems. Based on this analysis, it is proposed to identify a new dynamic state of geosystems: a transitional (intermediate) one located between serial and equifinal states in the factor-dynamic series of geosystems. Two categories of epigeomer models are shown: 1) epifacy (epigeomer) of the landscape, and 2) epigeomer. The former model describes the macrogeochore as a structurally dynamic and spatially functional whole, and the latter model characterizes the epigeomers of various hierarchical levels, and reflects not only the structural-dynamic relationships between geomers, but also their typological, classification-hierarchical (taxonomic) subordination. Using the example of geosystems of Southern Cisbaikalia, a generalized hierarchical model of epigeomers of the topological level belonging to the mountain-taiga dark coniferous geome of conditions of limited development is constructed. This model shows an invariant-variant multilevel structure that reflects the spatial and temporal changeableness of geosystems at different levels of the hierarchy, and emphasizes their subordination and features of manifestation at each level.
|