Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2021, Vol. 18, No. 1, pp. 138-148
Assessment the spatial-temporal changes in green phytomass of agricultural vegetation using spectral response
1 Belgorod State National Research University, Belgorod, Russia
Accepted: 19.01.2021
DOI: 10.21046/2070-7401-2021-18-1-138-148
Assessment the relationships between fractional green vegetation cover and NDVI vegetation index values for main species of agricultural vegetation in the south of the Central Russian Uplands was carried out (winter wheat, sunflower, soybeans, perennial grasses). The study was carried out using actual data on green vegetation fraction of agroecosystems in the Belgorod Region. The relationship between fractional green vegetation cover and vegetation index can be described by a logistic curve for all studied crops. The calculated equations characterize the main differences in the dynamics of green phytomass between types of agricultural vegetation. A spatio-temporal assessment of the winter wheat green vegetation fraction in the Belgorod Region was carried out using the calculated equations. A series of schematic maps has been prepared that characterize the territorial change in the winter wheat green vegetation fraction during the growing season, from early April to mid-July. Differences in the seasonal dynamics of crop green vegetation fraction growing in different climatic conditions were identified: the typical and southern forest-steppe. They are observed during the ripening period of winter wheat. During the period of maximum values of the green vegetation fraction, no significant territorial differences were found within the region.
Keywords: fractional green vegetation cover, agroecosystems, spectral response, spatial analysis, NDVI, MODIS, Central Russian Upland
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