Iidva

Location:Estonia
Area:1,991 acres (806 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
   
Share85 %5 %5 %5 % 
Soil TypeEutric GleysolsGleyic CambisolsGleyic LuvisolsCalcaric RegosolsFibric Histosols
Topsoil TextureMediumMediumMediumMediumFine
Reference Depth100 cm100 cm100 cm100 cm100 cm
DrainagePoorPoorPoorModerately wellVery poor
Available Water Capacity75 m50 m50 m50 m150 m
Phase 1PetrocalcicPetrocalcicStonyPetrocalcic 
Phase 2 StonyGravellyStony 
Root ObstacleNone 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 cmNone to 150 cm
Soil Water RegimeWet within 40 cm depth for over 11 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 80 cm for 3 to 6 months, but not wet within 40 cm for over 1 monthWet within 40 cm depth for over 11 month
Topsoil Properties
Gravel4 %4 %5 %14 %1 %
Sand37 %45 %47 %44 %20 %
Silt40 %36 %29 %35 %40 %
Clay23 %19 %24 %21 %40 %
USDA TextureLoamLoamLoamLoamClay
Reference Bulk Density1.38 g/cm³1.42 g/cm³1.39 g/cm³1.41 g/cm³1.26 g/cm³
Bulk Density1.35 g/cm³1.41 g/cm³1.54 g/cm³1.37 g/cm³0.1 g/cm³
Organic Carbon1.07 %1 %0.83 %0.75 %33.63 %
PH6.26.46.384.3
Clay Cation Exchange Capacity41 cmol kg⁻¹38 cmol kg⁻¹46 cmol kg⁻¹45 cmol kg⁻¹45 cmol kg⁻¹
Soil Cation Exchange Capacity13 cmol kg⁻¹9 cmol kg⁻¹16 cmol kg⁻¹17 cmol kg⁻¹77 cmol kg⁻¹
Base Saturation88 %85 %93 %100 %62 %
Total Exchangeable Bases10.2 cmol kg⁻¹8.2 cmol kg⁻¹14.9 cmol kg⁻¹26.8 cmol kg⁻¹31.4 cmol kg⁻¹
Calcium Carbonate0 %0 %0 %15 %0 %
Calcium Sulphate0 %0 %0 %0 %0 %
Exchangeable Sodium2 %2 %2 %2 %2 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.2 dS m-10.1 dS m-1
Subsoil Properties
Gravel5 %18 %6 %18 %2 %
Sand36 %39 %39 %40 %47 %
Silt36 %34 %27 %35 %26 %
Clay28 %27 %34 %25 %27 %
USDA TextureClay loamClay loamClay loamLoamSandy clay loam
Reference Bulk Density1.35 g/cm³1.36 g/cm³1.33 g/cm³1.37 g/cm³1.38 g/cm³
Bulk Density1.5 g/cm³1.6 g/cm³1.65 g/cm³1.5 g/cm³0.1 g/cm³
Organic Carbon0.37 %0.47 %0.28 %0.47 %32.89 %
PH6.66.778.14.6
Clay Cation Exchange Capacity42 cmol kg⁻¹37 cmol kg⁻¹44 cmol kg⁻¹52 cmol kg⁻¹71 cmol kg⁻¹
Soil Cation Exchange Capacity13 cmol kg⁻¹11 cmol kg⁻¹16 cmol kg⁻¹15 cmol kg⁻¹78 cmol kg⁻¹
Base Saturation90 %88 %99 %100 %40 %
Total Exchangeable Bases11.9 cmol kg⁻¹11.3 cmol kg⁻¹15.9 cmol kg⁻¹36.5 cmol kg⁻¹27.4 cmol kg⁻¹
Calcium Carbonate0 %0.1 %0.4 %15 %0 %
Calcium Sulphate0 %0 %0 %0 %0 %
Exchangeable Sodium2 %2 %2 %2 %1 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.3 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