Estimation of production processes dynamics in the south taiga subzone landscapes of the eastern european plain using remote sensing data

Abstract

The article is devoted to the assessment of the influence of biotic, abiotic and anthropogenic factors on the dynamics of production processes of various ecosystems located in one natural and climatic subzone — the southern taiga of the Eastern European Plain.

The study was carried out on the example of four key sites in the Vladimir region, located in different landscape provinces in similar climatic conditions, but with certain differences associated with the characteristics of the soil and vegetation cover, anthropogenic load, and land use structure. Calculation of productivity indicators in carbon units is based on MODIS GPP/NPP data. The amount of organic carbon in the soil is determined according to the UN Food Organization (FAO) based on the Trends.Earth module of the GIS QGIS package.

Common to the four ecosystems is the course of changes in the indicators of vegetation productivity over the years against the background of its different absolute values. Favorable conditions for the accumulation of carbon in the soil are formed in areas with high productivity and a large number of overgrown lands. The results of analysis of variance ANOVA demonstrate that the factors of time and spatial position of key sites do not affect the content of soil organic carbon and gross biological productivity. Land use structure is a significant factor. It is shown that the insufficient productivity of some ecosystems is compensated by an increase in the productivity of neighboring ones, therefore, the preservation of intra-landscape diversity is a necessary condition for maintaining the stability of their functioning.

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