Metla Project 3319

Tree production and water protection after maintenance of ditch networks

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Duration: 2001-2007   Keywords: ditch network maintenance, peatland forests, tree production, water protection
Research project group: Distinct projects 1 - Structure and function of forest ecosystems


The general aim of the project is to create guidelines for determining the need for ditch network maintenance and for successful water protection in connection with it. The need for ditch network maintenance will be determined by the reaction of the tree stand: in different parts of Finland. The growth of 12 Scots pine stands has been monitored for 15 years after maintaining the ditch systems, and will be monitored during 5 years more within this project to allow reliable estimation of profitability. Additionally, data from practical forests subject to maintaining the ditch system some 10-15 years ago will be used. As regards water protection, the central aim is to find out how effectively the methods of water protection based on overland flow can reduce the loads of suspended solids and nutrients. The project also aims at empirically approximating the duration of the load of suspended solids caused by ditch network maintenance in selected basins in 1992-94. The study is performed in cooperation with Forestry Development Centre Tapio and North Carelian Environment Centre.

Project leader: Vuollekoski, Martti
The Finnish Forest Research Institute, Vantaa Unit, PL 18, FI-01301 VANTAA, FINLAND
Phone: +358 29 532 2393

Other researchers: Ahti, Erkki, VA (2003-08), Hökkä, Hannu, RO (2003-04), Karsisto, Marjut (2003), Koskela, Merja-Leena, ME (2004-07), Nieminen, Mika, VA (2003-07), Nousiainen, Hannu, VA (2003-04,2006)

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Updated 12.06.2012