Leo Heikurainen, Samuli Joensuu. (1981). Metsäojituksen hydrologiset seurausvaikutukset. Silva Fennica vol. 15 no. 3 article id 5124. https://doi.org/10.14214/sf.a15065

English title: The hydrological effects of forest drainage.

Original keywords: ojitus; ojitetut suot; hydrologia; vesistövaikutukset

English keywords: drained peatlands; water quality; drainage; hydrology; discharge

Abstract | View details | Full text in PDF | Author Info

The present paper deals with the most important factors of peatland hydrology and the influence of forest drainage on the hydrology of peatland itself and its surroundings. It is compiled of six seminar papers written by students in the Department of Peatland Forestry in the University of Helsinki. Special attention is paid to the hydrological consequenses of the maintenance of drained areas. Also ways and measures to minimize the negative environmental effects of these treatments are discusses.

The PDF includes a summary in English.

Heikurainen, E-mail: lh@mm.unknown
Joensuu, E-mail: sj@mm.unknown

Category : Research article

article id 371, category Research article

Mika Nieminen, Erkki Ahti, Hannu Nousiainen, Samuli Joensuu, Martti Vuollekoski. (2005). Capacity of riparian buffer zones to reduce sediment concentrations in discharge from peatlands drained for forestry. Silva Fennica vol. 39 no. 3 article id 371. https://doi.org/10.14214/sf.371

Keywords: ditching; suspended solids; peatlands; erosion; riparian buffer zones; water quality protection

Abstract | View details | Full text in PDF | Author Info

In 1995–2001, the efficiency of riparian buffer zone areas to reduce the concentrations of suspended solids in discharge from peatlands drained for forestry purposes was studied at 7 locations in south-central Finland. The two largest buffer zones reduced the concentrations of suspended solids by > 70%. The efficiency of the three medium-sized buffer zones to reduce through-flow sediment concentrations was 50–60%, but no reduction occurred at the smallest two buffer areas. Thus, the capacity of buffer zones to reduce sediment concentrations was strongly related to their size. However, significant correlations were also found between reduction capacity and inflow water sediment concentrations, although the correlations at the two smallest buffer zones were low. The use of buffer zones in reducing sediment load from peatlands drained for forestry purposes is recommended, but relatively large areas for efficient removal capacity are needed.

Nieminen, Finnish Forest Research Institute, Vantaa Research Centre, P.O. Box 18, FI-01301 Vantaa, Finland E-mail: mika.nieminen@metla.fi
Ahti, Finnish Forest Research Institute, Vantaa Research Centre, P.O. Box 18, FI-01301 Vantaa, Finland E-mail: ea@nn.fi
Nousiainen, Finnish Forest Research Institute, Vantaa Research Centre, P.O. Box 18, FI-01301 Vantaa, Finland E-mail: hn@nn.fi
Joensuu, Forestry Development Centre Tapio, Soidinkuja 4, FI-00700 Helsinki, Finland E-mail: sj@nn.fi
Vuollekoski, Finnish Forest Research Institute, Vantaa Research Centre, P.O. Box 18, FI-01301 Vantaa, Finland E-mail: mv@nn.fi

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