Sprungmarken

 

Leaching of Soil Organic Carbon and Plant Nutrients in Fresh Clear Cuttings of Coniferous Stands

Kestutis Armolaitis1, Vidas Stakenas1, Ausra Gudauskiene2, Jurate Aleinikoviene3
1 Ecology department, Lithuanian Research Centre for Agriculture and Forestry, Institute of Forestry
2 Perloja Experimental Station, Lithuanian Research Centre for Agriculture and Forestry
3 cology department, Lithuanian Research Centre for Agriculture and Forestry, Institute of Forestry

P 7.1 in Controls of dissolved organic matter fluxes in ecosystems

Poster Session 1 on Monday, 16:30-18:30

The research was performed in 1 and 2-year-old clear cuttings of, respectively, Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst.) stands on Luvisols. The concentrations of organic carbon and nutrients in mineral soil and in mineral soil solution collected in tension lysimeters between and under the skid trails were compared.

It was found that in mineral soil under the skid trails the mineralization of organic nitrogen (N) and nitrification were more intensive, and the concentrations of mobile K2O and P2O5 have increased. According to the analyses of mineral soil solution it was indicated that the leaching of mineral N, particularly of nitrate (NO3-) and nitrite (NO2-) ions, and of potassium (K+) ions, dissolved organic carbon (OC) and phosphates (PO43-) have increased. In addition it was defined that the leaching of OC and mentioned nutrients was, especially under skid trails, by 10-20 folds more intensive that in adjacent mature Scots pine stand.

Letzte Änderung 13.02.2014