Purpose: to develop a methodological approach to assessing the ecological state of a watercourse and the degree of anthropogenic load on it, proposals for optimizing the monitoring of anthropogenic impact on the watercourse.
Materials and methods. The method for calculating the coefficient of natural protection of a watercourse catchment area and the degree of anthropogenic load on it, criteria for the qualitative and quantitative characteristics of the anthropogenic load on a watercourse depending on the type of land use within the boundaries of the surface catchment is presented.
Results and discussion. The main provisions of the methodological approach to assessing the ecological state of a watercourse and the anthropogenic load on it are described. It is shown that the collector canal within the boundaries of a populated area is characterized by the highest degree of anthropogenic load (90 %) and an almost complete lack of natural protection from anthropogenic impact. The coefficient of natural protection of the surface catchment within the boundaries of irrigated lands is 0.143, the degree of anthropogenic load on the canal was 85.7 %, characterized as the highest, and theoretical calculations have established that in the case of protective forest plantations along the collector section, it (within this section) decreases by 3 %. The coefficient of natural protection of the surface catchment within the boundaries of dry lands is 0.4, the degree of anthropogenic load was 60 % and characterized as high.
Conclusions. Calculations of the degree of anthropogenic load on the watercourse depending on the type of land use within the boundaries of the surface catchment of the collector showed that it increases in the following sequence: dry lands → irrigated lands → populated area. The developed fundamental principles of the methodological approach to assessing the ecological state of a watercourse and the degree of anthropogenic load on it postulate that the permissible anthropogenic load on a section of a small water body in the zone of influence of a collector channel should not exceed the ecological capacity of the water body.
anthropogenic load on a water body, ecological capacity of a water body, collector, monitoring, indicator system for assessing the ecological state
Vlasov M. V., Drovovozova T. I., Olgarenko D. I. A methodological approach to assessing the ecological state of a watercourse and the degree of anthropogenic load on it. Ways of Increasing the Efficiency of Irrigated Agriculture. 2026;98(1):113–128. (In Russ.).
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