A study looked at how changing the number of trees in larch forests affects the growth of plants underneath. They found that reducing the tree density from 3,000 to 1,800 trees per hectare led to a decrease in the number of plant species and biomass. However, when the density was further reduced to 1,550 trees per hectare, the plant biomass and diversity increased. The best conditions for plant growth were seen at a density of 1,550 trees per hectare. The study showed that changing the tree density can impact the variety and amount of plants growing underneath the trees.