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Tekijät
The effects of drainage and fertilization (both slowly and readily soluble fertilizers were included) on the above-ground biomass and cover of understorey vegetation were studied in two mires situated at Lammi, southern Finland, and at Ilomantsi, northern Karelia. Urea and especially micronutrients decreased the cover of Sphagnum species. Slowly soluble nitrogen also decreased the cover of Sphagnum, but not as efficiently. In fen site types the cover and biomass of Vaccinium oxycoccos and Andromeda polifolia increased strongly after fertilization. The greatest change in vegetation was caused by micronutrients given together with macronutrients. The cover and biomass of Eriophorum vaginatum and Rubus chamaemorus increased on all the fertilization plots probably because phosphorus was included in all the treatments. Calluna vulgaris and Empetrum nigrum benefited from the NPK fertilization on hummock sites.
Keywords: Apatite, biodiversity, biomass, biotite, peatland forestry, urea
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Vasander,
Department of Forest Ecology, P.O. Box 24 (Unioninkatu 40 B), FIN-00014 University of Helsinki, Finland
Sähköposti:
ei.tietoa@nn.oo
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Kuusipalo,
Sähköposti:
ei.tietoa@nn.oo
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Lindholm,
Sähköposti:
ei.tietoa@nn.oo
