Fallow land and agrocenosis diagnostics by remote sensing of the earth methods and geoinformation technology

The purpose of research is to establish the possibility and develop criteria for diagnosing fallow lands and agrocenoses of different ages using the methods of remote sensing of the Earth and geoinformation technologies. The objects of research are fallow lands of different ages in the subtaiga zone of the Krasnoyarsk Region, located at the Zarechenka station of the FRC KSC SB RAS (Zarechenka village, Tyukhtet District). According to natural zoning, this territory is included in the southern taiga-forest, flat-plain, loamy, sod-podzolic and swamp-podzolic region of the subtaiga zone. The soil of the station: soddy-podzolic light loamy with a humus content of 2.1-2.4%; pHsol. - 4.4-4.6; P2O5 - 2.8-3.1 mg/100 g soil; K2O - 4.5-5.5 mg/100 g of soil (according to Kirsanov). In total, in the study area there are 3 fallow areas of different ages, 3 cultivated fields and 1 area developed after 10 years of fallow. Presents the results of monitoring fallow lands of different ages at the Zarechenska station of the Federal Research Center Krasnoyarsk Scientific Center of the Siberian Branch of the RAS, located in the subtaiga zone of the Krasnoyarsk Region. Remote sensing was carried out using a UAV (DJI Matrice 210 V2 quadcopter) with a RedEdge-MX multispectral camera installed, as well as using Sentinel-2 multispectral satellite images, which were processed in the QGIS software package. Various methods of analyzing and processing satellite data were used: visual interpretation, a combination of various spectral channels, and also calculation of the NDVI index. The results obtained demonstrated a high correlation between the indicators recorded using the satellite and the UAV. Remote sensing of fallow lands of different ages, as well as fields occupied by fallow and grain crops, has shown the possibility of differentiating lands by type and quality of their use through the use of UAVs and Sentinel-2 satellites.