%0 Conference Article %T SEASONAL PHOTOSYNTHETIC PRODUCTIVITY IN TREE SPECIES OF THE GENUS BETULA, POPULUS, AND PINUS IN THE FOREST-STEPPE ZONE OF THE EUROPEAN PART OF RUSSIA %A Evlakov, P.M. %A Ryzhkova, V.S. %A Zhuzhukin, K.V. %K photosynthetic productivity, birch, poplar, scots pine, vegetation period %J TECHNOLOGIES IN BIOECONOMICS: INNOVATIONS AND CHALLENGES IN THE 21ST CENTURY %D 2025 %P 5 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov