PEATWISE Case studies Finland - ERA-GAS · 2020. 2. 14. · D v o v P Z } ( P } Á ] v P } v W ñ u...

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  • Case study, FinlandPEATWISE

  • Ruukki, FinlandSite type: Grass and cereal crops on acid sulphate soils

    Mitigation measure tested: WTL control and agronomy/crop management

    PEATWISE Case Studies, Ruukki

  • Ruukki , FinlandContact person: Hannu Marttila (Hannu.Marttila@oulu.fi)

    Description, land use history: Shallow peat, agricultural area. issue with acid sulphate soils

    Climate Soil quality and agronomy Hydrology and drainage

    Location

    64⁰41.0019; 25⁰05.4343

    Peat depth 0.2 – 0.7m Drainage started Block 6 (1900)Block 5 (1960) Block

    1,2 (1980)

    Mean annualprecipitation (mm y-1)

    522 Underlying soil Sandy clay, Acid Sulphate soil

    Drain depth past (cm) 80-120 (depending on soil surface)

    Mean annual T (° C)

    2,3 Crops Grass ley or cereal (barley or oats)

    Drain depth present (cm)

    100

    Mean length ofgrowing season

    5 months Rotation 3-4 years (ley) + 2 years (cereal)

    Drain spacing (m) 12

    Harvests 3

    PEATWISE Case Studies, Ruukki

  • Site location and informationProfile description:

    0-20/30cm root depth, (H7-H10, von post)

    20-30/70cm organic soil, ”reddish”iron oxide layer most prominent in blocks 1-4, containing large intact plant materials, highly decomposed (H7-H10, von post)

    30/70cm-x mineral soil, sandy clay, ‘rust spots’, very dry (Oct 2018)

    PEATWISE Case Studies, Ruukki

  • Agriculture and land use (photos)Land use information:Grass ley or cereal3 years grass, 1 year cropMean length of growing season: 5 months

    PEATWISE Case Studies, Ruukki

  • Experimental set-up

    Objective: To study the field-scale water balance and observe effectiveness of drainage management on WTL control/manipulation to reduce GHG emissions whilst maintaining biomass production

    Monitoring 2018-2022Continuous: Groundwater table levels, drainage flows, soil moistureFrequent: Stable water isotopes, hydraulic conductivity, GHG fluxesSeasonal: soil-water retention, biomass yield,

    Description: 6 separately drained blocks Varying crops (grass ley, oats or barley) Adjacent to FMI weather station Continuous drainage data (left) Continuous GWT logger data (left)

    PEATWISE Case Studies, Ruukki

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