Aidu

Location:Estonia
Area:767 acres (311 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

Protected Area Boundary
 A
  
Share35 %30 %20 %10 %5 %
Soil TypeCalcaric CambisolsCalcic LuvisolsEutric GleysolsTerric HistosolsCalcaric Regosols
Topsoil TextureMediumMediumMediumMediumMedium
Reference Depth100 cm100 cm100 cm100 cm100 cm
DrainageModerately wellModerately wellPoorVery poorModerately well
Available Water Capacity50 m50 m125 m150 m50 m
Phase 1PetrocalcicStonyStony Petrocalcic
Phase 2StonyGravelly  Stony
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 cm80 - 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 for 3 to 6 months, but not wet within 40 cm for over 1 monthWet within 40 cm depth for over 11 monthWet within 40 cm depth for over 11 monthNot wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 month
Topsoil Properties
Gravel6 %5 %4 %28 %14 %
Sand36 %53 %37 %35 %44 %
Silt43 %24 %40 %33 %35 %
Clay21 %23 %23 %32 %21 %
USDA TextureLoamSandy clay loamLoamClay loamLoam
Reference Bulk Density1.39 g/cm³1.41 g/cm³1.38 g/cm³1.32 g/cm³1.41 g/cm³
Bulk Density1.41 g/cm³1.53 g/cm³1.35 g/cm³0.28 g/cm³1.37 g/cm³
Organic Carbon0.65 %0.51 %1.07 %39.4 %0.75 %
PH87.76.25.68
Clay Cation Exchange Capacity52 cmol kg⁻¹55 cmol kg⁻¹41 cmol kg⁻¹45 cmol kg⁻¹45 cmol kg⁻¹
Soil Cation Exchange Capacity16 cmol kg⁻¹14 cmol kg⁻¹13 cmol kg⁻¹87 cmol kg⁻¹17 cmol kg⁻¹
Base Saturation100 %100 %88 %75 %100 %
Total Exchangeable Bases24.3 cmol kg⁻¹17.1 cmol kg⁻¹10.2 cmol kg⁻¹59.5 cmol kg⁻¹26.8 cmol kg⁻¹
Calcium Carbonate7 %7.4 %0 %0 %15 %
Calcium Sulphate0 %0 %0 %0 %0 %
Exchangeable Sodium1 %1 %2 %1 %2 %
Electrical Conductivity0.4 dS m-10.1 dS m-10.1 dS m-10.1 dS m-10.2 dS m-1
Subsoil Properties
Gravel10 %10 %5 %5 %18 %
Sand34 %47 %36 %52 %40 %
Silt43 %23 %36 %23 %35 %
Clay23 %30 %28 %25 %25 %
USDA TextureLoamSandy clay loamClay loamSandy clay loamLoam
Reference Bulk Density1.38 g/cm³1.36 g/cm³1.35 g/cm³1.38 g/cm³1.37 g/cm³
Bulk Density1.45 g/cm³1.67 g/cm³1.5 g/cm³0.18 g/cm³1.5 g/cm³
Organic Carbon0.43 %0.3 %0.37 %38.46 %0.47 %
PH8.17.96.65.88.1
Clay Cation Exchange Capacity54 cmol kg⁻¹50 cmol kg⁻¹42 cmol kg⁻¹49 cmol kg⁻¹52 cmol kg⁻¹
Soil Cation Exchange Capacity16 cmol kg⁻¹17 cmol kg⁻¹13 cmol kg⁻¹88 cmol kg⁻¹15 cmol kg⁻¹
Base Saturation100 %100 %90 %96 %100 %
Total Exchangeable Bases28.7 cmol kg⁻¹23.1 cmol kg⁻¹11.9 cmol kg⁻¹81.8 cmol kg⁻¹36.5 cmol kg⁻¹
Calcium Carbonate8.7 %9.1 %0 %0 %15 %
Calcium Sulphate0.4 %0 %0 %0 %0 %
Exchangeable Sodium1 %2 %2 %1 %2 %
Electrical Conductivity0.3 dS m-10.2 dS m-10.1 dS m-10.1 dS m-10.3 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