The aim of research was to assess the irrigated land degradation of “Maloorlovskoe” Martynovsky district Rostov region under calibration of agricultural land monitoring services. Russian agribusiness monitoring research was carried out with the help of “VEGA-Science” satellite service and consisted of three phases: collection, processing and data presentation. Field experiments were carried out in accordance with the procedures adopted by GOST 17.4.3.01-83, GOST 28168-89, OST 56 81-84. To delineate the boundaries of fields and add them into the database, high-resolution data were used: the scene of 2015-09-28. 14 thematic maps to estimate the degree of degradation (from 0 to 3 points) were made up for the entire study area. Humus decline (from 3.5 to 1.6 %) is observed on nearly all fields. Humus stocks decline is accompanied by nearly all soil properties deterioration: structure destruction (water resistance less than 20 % on fields ¹ 2–7, 14, 20, 21), compaction (density greater than 1.3 tonnes per cubic meter on fields ¹ 3–10, 11–14, 20, 21), a decrease of available nutrients (mobile phosphorus less than 3.8 mg /100 g soil on fields ¹ 1–7, 11–14, 18 and exchangeable potassium less than 40 mg/100 g soil on fields ¹ 1–5, 8–9, 16–18, 21). The final map with degradation processes intensity assessment of irrigated fields in study area is completed. The highest score (3 points) at high intensity degradation processes was recorded on agrophysical and agrochemical indexes. Changing the basic diagnostic indicators in the study area is the result of degradation processes such as compaction and soil destruction, waterlogging, irrigation erosion, depletion and dehumidification nutrients. Taking into account all these features of degradation processes, the measures to restore fields with high intensity of these processes should be developed.
Keywords: degradation, satellite data, agricultural land monitoring “VEGA” service, database, vegetation index NDVI, humus, soil destruction, dehumidification.
