Light Use Efficiency of Aboveground Biomass Production of Norway Spruce Stands

Light use efficiency (LUE or photosynthetically active radiation use efficiency) in production of young spruce stands aboveground biomass was determined at the study sites Rajec (the Drahanska vrchovina Highland) and Bilý Křiž (the Moravian-Silesian Beskids Mountains) in 2014 and 2015. The LUE value obtained for the investigated spruce stands were in the range of 0.45-0.65 g DW MJ-1. The different LUE values were determined for highland and mountain spruce stand. The differences were caused by growth and climatic conditions and by the amount of assimilatory apparatus (LAI).