Dynamics of Soil-Productive Potential of River Basin Ecosystems Functioning in Different Climatic Conditions Assessed Basing on Remote Sensing Data

To assess the state of soil and plant resources of the territory of several river catchments, the indicator of soil-productive potential (fraction of absorbed photosynthetically active radiation based on ground and remote data, FAPAR), as well as indicators of the phytomass reserve, data on phytocenosis production and land use, and leaf area index (LAI) were used. It is shown that ecosystems of river basins located in different climatic zones react ambiguously to climate change. The data obtained make it possible to forecast the dynamics of soil-productive potential in the conditions of changes in climatic characteristics, such as temperature and precipitation. It is shown that the productive potential continues to grow with time only in those areas, where the amount of biologically active temperatures is a limiting factor, i.e., in river basins within the zone of mixed forests. It is found that in river basins with limited precipitation, the temperature increase will lead to a decrease in the soil productive potential.