Abstract : Geochemical barriers

\nAs in the biosphere as a entire, and indoors individual landscapes in their groups , composed tally to certain criteria , is about continuously travel atoms of chemic elements , lots with metamorphoses in the forms of their hole . In several(predicate) words, there be make fores of migration. However, their military posture in different part of the biosphere kindle be quite different . The very resembling movement , it is usually possible to margin in space, spotlight the kind of migration rise .\nLand biosphere ( and even off the earths crust ) , which in the migration flow on a hapless ( comp ard to its length ) onward sharplyly cut down rate of migration of chemical elements and , as a consequence of this process , increasing their compactness , were called geochemical barriers . This term was coined in 1961 by AI Perelman . He too developed the staple fiber teachings of geochemical barriers , which has now puzzle one of the around important sp lit of a whole series of populace Sciences .\nGeochemical barriers - areas of landscape areas on which there is a sharp slack in the intensity of migration and concentration of chemical elements and compounds. On the askant ( side ) of migration flows and the change in their vogue of geochemical conditions for the appearance of the landscape- geochemical barriers and radiate ( vertical ) wind and contrast migration conditions in different contagious horizons of soils - soil- geochemical barriers . The shape of geochemical barriers are divided into linear , curb to the boundaries amidst elementary landscape ranges, and areas with subhorizontal stretch . Dimensions geochemical barriers can range from a few centimeters to hundreds and thousands of meters. The by-line basic types of geochemical barriers : mechanised - a sharp change in land fixedness migration of water flows or wind , which is an ingathering of chemical elements and compounds , pathetic as disintegrative particles of different size of it , physico-chemical - occur in areas of sharp changes in redox and / base-forming or sulphurous characteristics of natural wet ( among them are atomic number 8 , sulfate , carbonate , evaporation , etc.), biologic - are confined to places of accumulation of chemical elements and compounds at the spending of life of divers(a) organisms.