S. E. Multamäki 
Metsäojien mittojen ja muodon muuttumisesta
Multamäki S. E. (1934). Metsäojien mittojen ja muodon muuttumisesta. Acta Forestalia Fennica vol. 40 no. 34 article id 7311. https://doi.org/10.14214/aff.7311
English title: Changing of dimensions and form of forest ditches after the drainage in FinlandAbstract
The aim of the study was to investigate how the drain network and dimensions of ditches change after the drainage. The studied drained peatlands were situated in the municipalities of Parkano and Virrat in Central Finland. The ditches were in average 15 and 17 years old. The depth and width in the surface of the peatland were in average one quarter smaller than after the drainage. The width at the bottom of the ditch has, however, almost doubled. Peat had sunken more in peatlands with thick peat layer and higher humidity. Sinking of peat influenced the depth of the ditches. The volume of the ditches decreased about 30%. The decrease of the ditches by the drying and sinking of the peat was greater than the increase caused by erosion.
The PDF includes a summary in German.
Original keywords
ojitus;
metsäoja;
turpeen painuminen;
ojien eroosio
English keywords
erosion;
drainage of peatlands;
forest ditch;
drying of peatland
Published in 1934
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