Natural and medical sciences

2022 Issue №2

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Research methodology and geoecological assessment of watersheds of small water currents of polder lands in the Kaliningrad region



Chemical pollution of watercourses can be considered as one of the integral indicators of the geoecological state of the catchment area. Such an indicator is most likely to be taken into account in the two-way interaction of a person with watercourses, both for a water user and a negative impact on them, since in both cases, water quality very often comes high in priority. Thanks to the analysis of data on pollution, it is possible to find out its sour­ces, both anthropogenic and natural, the dominant pollutants, together with their intensity and dynamics, the need for treatment and environmental pro­tec­tion measures and their nature, and more. Hydrochemical indicators, the back­ground of water pollution assessment, can be roughly divided into 2 groups: qualitative (concentration of chemicals) and quantitative (mass of che­mi­cals). If the concentrations of certain chemicals can be obtained in labo­ra­to­ry conditions, using the methods described in the regulatory documents adop­ted in the territory of the Russian Federation, then obtaining their mass indicators, for a certain period of time, is not a trivial task. The main methods for calculating this characteristic indicate the need for a diverse and capacious information base, which is almost completely absent for the polder lands of the region. The aim of the work is to develop a methodological approach for obtai­ning a geoecological indicator represented by a quantitative indicator of pollu­ting chemicals in water, leveling the information deficit, by means of a coup­led analysis of available, but very limited hydrological, hydrochemical and geoecological data. To achieve the goal, hydrological calculations, full-scale and retrospective hydro-chemical researches were carried out, geoecological cha­racteristics were analyzed. The work resulted in creating methodological sup­port for obtaining an additional indicator for the assessment of the geo­ecological state of the basins of small streams of polder lands in the Kali­nin­grad region.