Torsviken

Location:Sweden
Area:361 acres (146 hectares)
Species:All  Endangered  Invasive
Climate:View Climate Data
Land Use:View Land Use Data
Köppen climate classification:Cfb (Climate: warm temperate; Precipitation: fully humid; Temperature: warm summer)
Natura 2000 Data Sheet:View Data Sheet  Explanatory notes

Ecoregions

Sarmatic mixed forests

Soils

Protected Area Boundary
 A
  
Share37 %22 %12 %11 %10 %8 %
Soil TypeLithic LeptosolsDystric CambisolsHaplic PodzolsDystric RegosolsHaplic ArenosolsFibric Histosols
Topsoil TextureMediumMediumMediumMediumCoarseFine
Reference Depth10 cm100 cm100 cm100 cm100 cm100 cm
DrainageImperfectlyModerately wellModerately wellModerately wellSomewhat excessiveVery poor
Available Water Capacity15 mm150 m50 m100 m15 m150 m
Phase 1Stony StonyStonyGravelly 
Phase 2  Gravelly   
Root Obstacle None to 80 cm40 - 60 cm40 - 60 cmNone to 80 cm20 - 40 cm
Impermeable Layer None to 150 cmNone to 150 cmNone to 150 cmNone to 150 cmNone to 150 cm
Soil Water Regime Not wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 monthNot wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 monthNot wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 monthNot wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 monthWet within 40 cm depth for over 11 month
Topsoil Properties
Gravel21 %10 %15 %19 %4 %1 %
Sand42 %42 %50 %42 %90 %20 %
Silt34 %38 %40 %37 %5 %40 %
Clay24 %20 %10 %21 %5 %40 %
USDA TextureLoamLoamLoamLoamSandClay
Reference Bulk Density1.38 g/cm³1.41 g/cm³1.53 g/cm³1.41 g/cm³1.71 g/cm³1.26 g/cm³
Bulk Density1.3 g/cm³1.3 g/cm³1.41 g/cm³1.33 g/cm³1.49 g/cm³0.1 g/cm³
Organic Carbon1.61 %1.45 %5.27 %1.39 %0.4 %33.63 %
PH7.55.14.55.16.24.3
Clay Cation Exchange Capacity42 cmol kg⁻¹32 cmol kg⁻¹89 cmol kg⁻¹23 cmol kg⁻¹35 cmol kg⁻¹45 cmol kg⁻¹
Soil Cation Exchange Capacity16 cmol kg⁻¹12 cmol kg⁻¹28 cmol kg⁻¹11 cmol kg⁻¹3 cmol kg⁻¹77 cmol kg⁻¹
Base Saturation100 %38 %11 %24 %93 %62 %
Total Exchangeable Bases15.5 cmol kg⁻¹4.3 cmol kg⁻¹5.6 cmol kg⁻¹3 cmol kg⁻¹3.3 cmol kg⁻¹31.4 cmol kg⁻¹
Calcium Carbonate3.9 %0 %0 %0 %0 %0 %
Calcium Sulphate0 %0 %0 %0 %0 %0 %
Exchangeable Sodium3 %2 %1 %1 %3 %2 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-1
Subsoil Properties
Gravel 19 %15 %26 %4 %2 %
Sand 45 %55 %46 %90 %47 %
Silt 35 %35 %34 %5 %26 %
Clay 20 %10 %20 %5 %27 %
USDA Texture LoamSandy loamLoamSandSandy clay loam
Reference Bulk Density 1.42 g/cm³1.54 g/cm³1.42 g/cm³1.71 g/cm³1.38 g/cm³
Bulk Density 1.36 g/cm³1.44 g/cm³1.48 g/cm³1.52 g/cm³0.1 g/cm³
Organic Carbon 0.5 %0.81 %0.6 %0.21 %32.89 %
PH 5.254.96.14.6
Clay Cation Exchange Capacity 35 cmol kg⁻¹55 cmol kg⁻¹28 cmol kg⁻¹39 cmol kg⁻¹71 cmol kg⁻¹
Soil Cation Exchange Capacity 9 cmol kg⁻¹8 cmol kg⁻¹6 cmol kg⁻¹2 cmol kg⁻¹78 cmol kg⁻¹
Base Saturation 33 %13 %21 %100 %40 %
Total Exchangeable Bases 2.6 cmol kg⁻¹0.8 cmol kg⁻¹1.8 cmol kg⁻¹2.6 cmol kg⁻¹27.4 cmol kg⁻¹
Calcium Carbonate 0 %0 %0 %0 %0 %
Calcium Sulphate 0 %0 %0 %0 %0 %
Exchangeable Sodium 2 %0 %1 %3 %1 %
Electrical Conductivity 0.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-1
Soil data provided by FAO/IIASA/ISRIC/ISSCAS/JRC, 2012. Harmonized World Soil Database (version 1.2). FAO, Rome, Italy and IIASA, Laxenburg, Austria.
Köppen climate classification provided by Kottek, M., J. Grieser, C. Beck, B. Rudolf, and F. Rubel, 2006: World Map of Köppen-Geiger Climate Classification updated. Meteorol. Z., 15, 259-263