Viku purvs

Location:Latvia
Area:2,162 acres (875 hectares)
Species:All  Endangered  Invasive
Climate:View Climate Data
Land Use:View Land Use Data
Köppen climate classification:Dfb (Climate: snow; Precipitation: fully humid; Temperature: warm summer)
Natura 2000 Data Sheet:View Data Sheet  Explanatory notes

Ecoregions

Sarmatic mixed forests

Soils

Link to Map
Protected Area Boundary
 AB
   
Share40 %20 %20 %15 %5 % 
Soil TypeHaplic LuvisolsEutric GleysolsEutric PodzoluvisolsGleyic PodzoluvisolsGleyic LuvisolsFibric Histosols
Topsoil TextureMediumFineMediumMediumFineFine
Reference Depth100 cm100 cm100 cm100 cm100 cm100 cm
DrainageModerately wellVery poorModerately wellPoorPoorVery poor
Available Water Capacity100 m125 m100 m100 m50 m150 m
Phase 1StonyStonyStonyStonyStony 
Root ObstacleNone to 80 cmNone to 80 cmNone to 80 cmNone to 80 cmNone to 80 cmNone to 80 cm
Impermeable LayerNone to 150 cmNone to 150 cmNone to 150 cmNone to 150 cm40 - 80 cmNone to 150 cm
Soil Water RegimeWet within 80 cm for 3 to 6 months, but not wet within 40 cm for over 1 monthWet within 80 cm over 6 months, but not wet within 40 cm for over 11 monthWet within 80 cm for 3 to 6 months, but not wet within 40 cm for over 1 monthWet within 80 cm over 6 months, but not wet within 40 cm for over 11 monthWet within 80 cm over 6 months, but not wet within 40 cm for over 11 monthWet within 40 cm depth for over 11 month
Topsoil Properties
Gravel4 %1 %1 %1 %4 %1 %
Sand41 %17 %35 %32 %43 %20 %
Silt37 %32 %54 %49 %16 %40 %
Clay22 %51 %11 %19 %41 %40 %
USDA TextureLoamClaySilt loamLoamClayClay
Reference Bulk Density1.4 g/cm³1.22 g/cm³1.49 g/cm³1.4 g/cm³1.31 g/cm³1.26 g/cm³
Bulk Density1.43 g/cm³1.25 g/cm³1.36 g/cm³1.35 g/cm³1.3 g/cm³0.1 g/cm³
Organic Carbon0.74 %1.25 %1.2 %2.22 %0.84 %33.63 %
PH6.55.85.45.374.3
Clay Cation Exchange Capacity47 cmol kg⁻¹37 cmol kg⁻¹48 cmol kg⁻¹36 cmol kg⁻¹57 cmol kg⁻¹45 cmol kg⁻¹
Soil Cation Exchange Capacity13 cmol kg⁻¹25 cmol kg⁻¹9 cmol kg⁻¹17 cmol kg⁻¹24 cmol kg⁻¹77 cmol kg⁻¹
Base Saturation91 %78 %55 %55 %99 %62 %
Total Exchangeable Bases11 cmol kg⁻¹18.9 cmol kg⁻¹5.7 cmol kg⁻¹5.7 cmol kg⁻¹26 cmol kg⁻¹31.4 cmol kg⁻¹
Calcium Carbonate0 %0 %0 %0 %1.4 %0 %
Calcium Sulphate0 %0 %0 %0 %0 %0 %
Exchangeable Sodium1 %2 %0 %0 %1 %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
Gravel3 %1 %4 %4 %8 %2 %
Sand37 %19 %37 %25 %37 %47 %
Silt34 %29 %43 %51 %15 %26 %
Clay29 %52 %20 %24 %48 %27 %
USDA TextureClay loamClayLoamSilt loamClaySandy clay loam
Reference Bulk Density1.35 g/cm³1.23 g/cm³1.4 g/cm³1.35 g/cm³1.27 g/cm³1.38 g/cm³
Bulk Density1.51 g/cm³1.35 g/cm³1.61 g/cm³1.6 g/cm³1.32 g/cm³0.1 g/cm³
Organic Carbon0.36 %0.45 %0.25 %0.5 %0.55 %32.89 %
PH6.765.35.474.6
Clay Cation Exchange Capacity50 cmol kg⁻¹40 cmol kg⁻¹63 cmol kg⁻¹40 cmol kg⁻¹51 cmol kg⁻¹71 cmol kg⁻¹
Soil Cation Exchange Capacity14 cmol kg⁻¹23 cmol kg⁻¹9 cmol kg⁻¹14 cmol kg⁻¹27 cmol kg⁻¹78 cmol kg⁻¹
Base Saturation93 %84 %59 %59 %99 %40 %
Total Exchangeable Bases13.1 cmol kg⁻¹17 cmol kg⁻¹4.9 cmol kg⁻¹4.9 cmol kg⁻¹31.3 cmol kg⁻¹27.4 cmol kg⁻¹
Calcium Carbonate0 %0 %0 %0 %0 %0 %
Calcium Sulphate0 %0 %0 %0 %0 %0 %
Exchangeable Sodium1 %3 %0 %0 %2 %1 %
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
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