Remote monitoring of overgrowth of higher aquatic vegetation in the water area of the eutrophied reservoir
Т.I. Kutyavina, V.V. Rutman, Т.Ya. Аshikhmina
Section: Research methods. Models and projects
The paper presents information on the distribution of thickets of coastal aquatic and higher aquatic plants in the water area of the Omutninsky reservoir, subject to eutrophication processes. During the route survey of the reservoir, 33 dominant species of aquatic and coastal aquatic plants were identified. Large thickets of higher plants were found in shallow areas in the upper reaches and in the central part of the reservoir along the coastline. Interpretation of satellite images from the Landsat-5 and Sentinel-2A satellites was carried out, the normalized vegetation index (NDVI) was calculated. According to the results of the NDVI calculation, the areas of overgrowth of the water area of the Omutninskoye reservoir with emergent vegetation were calculated. A decrease in the areas of overgrowth in the upper reaches of the reservoir was noted in the period from 2011 to 2019, which is most likely associated with the influence of the temperature factor.
Keywords: inland waters, eutrophication, higher aquatic plants, NDVI, remote sensing of the Earth
Article published in number 3 for 2020 DOI: 10.25750/1995-4301-2020-3-036-040