INFLUENCE OF GEOLOGICAL AND GEOMORPHOLOGICAL FACTORS ON THE GULLY GROWTH RATES IN UDMURTIA
The article presents an analysis of growth rates of various types of gullies monitored during 1998-2015 depending on geological and geomorphological factors(composition of eroded rocks, area of gully head catchment, length and average gradient of the flow path, depth of the local erosion basis, average gradient and aspect of slope). Similar dependences for the period 1978-1997 are used only for comparison [1; 2]. The growth rates of 168 agricultural gullies developing under different geological and geomorphological conditions of the Udmurt Republic are used for analysis. It was found that gullies developed the most intensively in loose loamy rocks confined to the cold exposure slopes. High positive correlations detected for valley-head gullies with the area of catchments ( r = 0,878), the depth of the local erosion basis ( r = 0,749) and the length of the flow path ( r = 0,733). High performance links are also identified between the growth rate of valley-side gullies and the depth of the local erosion basis ( r = 0,710).