Home – Home – Jornals – Geography and Natural Resources 2021 number 2

An analysis of domestic and foreign approaches to assessing the ecological state of recreational landscapes was carried out. We identified two main groups of approaches based on the regulation of recreational loads and on determining the maximum permissible changes in indicators of the state of the soil and vegetation cover. A large complex of physical properties and indicators of the chemical composition of soils on ten typical recreational sites and adjacent background sites was studied. Hardness, density, humidity, porosity, magnetic susceptibility, granulometric composition, pH water, absorption capacity, humus and carbonate content were determined for soils. A complex of biophysical and morphometric parameters of hanging birch and common pine: the temperature and humidity of the trunk and roots, the value of radial growth, and the value of the asymmetry of the leaf blade were studied. The directional character of the transformation of the properties and indicators of soils and wood species studied under increased recreational loads was established. A number of integral and parametric indicators for assessing the ecological state of soils, surface waters and the living condition of trees, including those determined using express-analyzers, have been proposed. According to the oxygen regime index, three main classes of surface water quality in recreational areas were identified: high, medium and low. The method of maximum permissible changes in the indicators of soil and vegetation cover for the assessment of the ecological state of recreational areas has been adapted to the conditions of the region. Their critical values for the third stabilized stage of soil digression and the third category of tree species life condition were determined. A series of nomograms for an approximate assessment, including in the Express version, of the stages of soil digression, the vital state of the forest stand, and the quality class of surface waters of the recreational territories of the Altai Republic was developed.