Effect of fertilization on the litter fall of <i>pinus sylvestris</i> and <i>betula pubescens</i> on drained peatlands

NPK fertilization on a dwarf shrub pine bog initially increased the amount and nutrient content of the tree litter. Eight years after fertilization, however, the amount of micronutrients decreased compared to the amount of N and P in the litter. Fertilization on a fertile mire also increased the nutrient content of the litter fall, especially in the mature pine and birch stands. The amount of nutrients in the litter fall of the birch stands was considerably greater than that in the pine stand of the same volume.

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