MAIN APPROACHES TO MONITORING THE EFFECT OF DIFFUSE SURFACE RUNOFFFROM AGRICULTURAL FIELDS ON THE WATER QUALITY OF THE KARATOMAR RESERVOIRUSING EARTH’S REMOTE SENSING

Abstract

The article describes the implementation of a new methodological approach for assessing diffuse runoff of biogenic elements using calculated NDMI and NDCI L1 indices derived from satellite imagery data. The study focuses on analyzing the inflow of biogenic elements into the Karatomar Reservoir from agricultural fields by identifying control polygons in raster images and indexing them based on NDMI on land and NDCI L1 in the reservoir's water area. This method allowed the tracking of the formation and inflow of biogenic elements with surface runoff during the period from May to October 2021-2023, identifying the primary sources of pollution. The calculation of correlation significance indices showed high accuracy in the data obtained when analyzing the relationship between NDMI and NDCI L1 indices. During the research, regulatory requirements and scientific recommendations for data collection and processing using remote sensing methods were studied. This methodology could later serve as the basis for developing an automated system to monitor the diffuse flow of biogenic elements of anthropogenic or technogenic origin, using remote sensing tools. The goal would be to create mechanisms to prevent or reduce pollution of various surface water bodies, including lotic and lentic ecosystems.