Geology, geography and global energy

Scientific and Technical Journal

Ecological stability of Astrakhan region to the tecnogenic influence

2014. №4, pp. 91-99

Dmitrieva Marina V. - Post-graduate student, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation,

Barmin Aleksandr N. - D.Sc. in Geography Professor Dean, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation,

Buzyakova Inna V. - C.Sc. in Geography Associate Professor, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation,

This article provides a detailed analysis of the stability of geosystems Astrakhan region, based on a study conducted by the relief of the biological productivity of agricultural land, as well as the study of climate areas. The factors that ensure sustainability of geosystems. These include such factors as the physical geography: geological structure, geotectonic regime, topography, soil and vegetation, water balance, river network density, climatic conditions, morphological: vertical and horizontal dissected relief, the intensity of deep erosion, deformation of longitudinal profiles of rivers and others. In the analysis of natural systems were the factors of human impact (direct and indirect), causing possible changes for the components of nature and natural systems in general. In assessing the degree of anthropogenic transformation of landscapes were studied questions of their dynamics and functioning of ecological plasticity and stability of their components to various influences, typical of the region under study. Identified two fundamental principles that sustain geosystems: maintaining internal diversity geosystems and saving a reasonable balance between the withdrawal of resources and their reproduction. Designed environmental sustainability areas of Astrakhan region on the basis of indicators such as the slope of the surface (topography), vegetation (productivity dominant association), bondability soil complexes, the area of pastures and hayfields, long module flow, average rainfall, average annual temperature, frost-free period, humidity, average wind speed. According to the results a map of the stability of various administrative areas of this anthropogenic pressure.

Key words: экологическая устойчивость природных комплексов, геосистемы, деградация, антропогенное воздействие, ecological stability of natural systems, geosystems, degradation, anthropogenic impact