Changes in the hydrographic characteristics of rivers in steppe agrolandscapes over the past decades (on the example of the Beysug river, Krasnodar territory)

https://doi.org/10.35595/2414-9179-2021-4-27-19-32

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About the Authors

Anatoly V. Pogorelov

Kuban State University,
Stavropolskaya str., 149, 350040, Krasnodar, Russia;
E-mail: pogorelov_av@bk.ru

Dmitry A. Lipilin

Kuban State University,
Stavropolskaya str., 149, 350040, Krasnodar, Russia;

Kuban State Agrarian University named after I.T. Trubilin,
Kalinina str., 13, 350044, Krasnodar, Russia;

E-mail: LipiLin_dmitrii@mail.ru

Evgeny N. Kiselev

Kuban State University,
Stavropolskaya str., 149, 350040, Krasnodar, Russia;

Abstract

In the Krasnodar territory, agricultural land occupies 62 % of the territory; of which 79 % is arable land. Most of the agricultural land is located on the Azov-Kuban Plain in the northern part of the region in the steppe river basins. The basin of the Beysug river with an area of about 6,000 km2, in terms of its geographical characteristics, should be attributed to representative basins from the standpoint of the modern dynamics of agricultural landscapes and transformations of the river network. The article analyzes the changes in the steppe agricultural landscapes in the Beysug river basin for the period 1999–2020 in terms of changes in the structure of land use and hydrographic characteristics, based on the data of satellite images.

The transformation of agrolandscapes is accompanied by redevelopment of the territory, massive construction of dams on rivers, violation of the conditions of natural drainage, which leads to the restructuring of water exchange processes in river basins. Changes in water exchange processes under semi-arid conditions can be sensitive to local landscapes and agriculture. Until now, insufficient attention has been paid to the hydrological aspects of the transformation of steppe landscapes. According to the DEM ASTER GDEM, 15 river basins were identified with the subsequent determination of land use types on the surface of the basins. In each of the basins, a land use structure has been established, which directly affects the hydrographic indicators, and a decrease in the length of watercourses and the density of the river network has been revealed. Over the past 20 years, in the studied basins, the total length of watercourses due to plowing and redevelopment of the surface has decreased by 8–37 %, and in general in the Beysug river basin—by 469 km.

Keywords

steppe rivers, Beysug, transformation, plowing, catchment, hydrographic characteristics, satellite imagery.

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For citation: Pogorelov A.V., Lipilin D.A., Kiselev E.N. Changes in the hydrographic characteristics of rivers in steppe agrolandscapes over the past decades (on the example of the Beysug river, Krasnodar territory) InterCarto. InterGIS. GI support of sustainable development of territories: Proceedings of the International conference. Moscow: MSU, Faculty of Geography, 2021. V. 27. Part 4. P. 19–32. DOI: 10.35595/2414-9179-2021-4-27-19-32 (In Russian)