ПРОСТРАНСТВЕННАЯ УСТОЙЧИВОСТЬ МЕЖКОМПОНЕНТНЫХ СВЯЗЕЙ В СРЕДНЕТАЕЖНОМ ЛАНДШАФТЕ

The research aims to test a hypothesis about nonstationarity of intercomponent relationships within a landscape unit, namely the composition of correlation groups, linkage density and the type of interdependency. We hypothesize also that inner differentiation of a landscape unit is possible within the framework conditions imposed by higher-order geosystems. We compare the quality of multiregression and correlation models for: a) central and peripheral sectors of a single unit; b) data sets of the sectors of a unit having different neighboring units; c) two types of facies within a locality; d) data sets of landscape and locality levels. Case study was performed in the Ustyansky district of the Arkhangelsk region, in the middle taiga landscape with structural relief shaped by glacial and erosion processes. The composition of correlation groups of landscape properties varies within the landscape thus evidencing the non-stationary nature of intercomponent relationships. Facial differentiation within urochishche could be conferred by neighboring urochishches. The interior sections of interfluve areas preserve the linkages among vegetation layers in comparison with partly destroyed soil-vegetation relationships. This could be explained by the higher input of phytocoenosis self-development under poor drainage conditions regardless the properties of the morpholithogenous basis. Decreasing diversity of landscape-forming drivers at the lower hierarchical level results in the changes of correlation groups and linkage density.