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On the basis of data on the temporal dynamics of cross-border flow of the Ural River and the dynamics of the climate in the region during the twentieth century, as well as information about changes in land use and economic activity of surface runoff estimated sensitivity to climate change. Changing of a climatic temperature within 0.50? and rainfall of 10 mm results in a change of water flow rate of 110 mпїЅ / s flow and 20 mпїЅ / s accordingly. Clearly, therefore, the is a high sensitivity of runoff from even wea...

The chemical composition of rainfall over the territory of Northern Kazakhstan пїЅ the main agricultural region of the Republic is analyzed. On average for a year, precipitation belongs in neutral type, however for the vegetative period the relation of acid-forming anions to neutralized cautions in most cases is less than one, i.e. predisposition to acidification is observed. The amount of the sulfur, which is dropping out per unit area, is considerable. On the most part of the considered territory, it several tim...