IMPACT OF LANDSCAPE-GEOGRAPHICAL FACTORS ON THEINTRA-ANNUAL RUNOFF DYNAMICS OF SMALL RIVERS(ON THE EXAMPLE OF SOUTHERN TAIGA, VOLOGDA UPLAND AREA)

Abstract

The paper analyzes climatic, geological, geomorphological, and soil-vegetative factors of river flow formation for two small rivers in the Northern Dvina river basin, located in the southern taiga subzone. The impact of these factors on the dynamics of the intra-annual runoff in relation to the two time intervals of the 1980s and 2010s is shown. The study was performed by using archival hydrometeorological data and remote sensing multispectral data of the Earth. The data obtained were used to analyze the state of the land cover of the basins and its dynamics over time. It was shown that the differences in the intra-annual distributions of runoff are mainly due to the structure of the landscape cover and the ratio of different types of forests in the river basins; general trends in the dynamics of the intra-annual runoff of the rivers in question are consistent with the changes in the climatic characteristics of the region under study.