Bois des Ayes

Location:France
Area:2,179 acres (882 hectares)
Species:All  Endangered  Invasive
Climate:View Climate Data
Land Use:View Land Use Data
Köppen climate classification:Dfc (Climate: snow; Precipitation: fully humid; Temperature: cool summer)
Natura 2000 Data Sheet:View Data Sheet  Explanatory notes

Ecoregions

Alps conifer and mixed forests

Soils

Protected Area Boundary
 AB
   
Share70 %20 %5 %5 %65 %15 %10 %10 %
Soil TypeCambic PodzolsDystric CambisolsEutric CambisolsChromic CambisolsUmbric LeptosolsDystric CambisolsLithic LeptosolsHaplic Luvisols
Topsoil TextureMediumMediumMediumMediumCoarseMediumCoarseMedium
Reference Depth100 cm100 cm100 cm100 cm30 cm100 cm10 cm100 cm
DrainageModerately wellModerately wellModerately wellModerately wellModerately wellModerately wellModerately wellModerately well
Available Water Capacity50 m50 m150 m150 m15 mm150 m15 mm150 m
Phase 1GravellyGravelly      
Phase 2Stony       
Root Obstacle60 - 80 cmNone to 80 cm60 - 80 cmNone to 80 cm None to 80 cm None to 80 cm
Impermeable LayerNone to 150 cmNone to 150 cmNone to 150 cmNone to 150 cm None to 150 cm None to 150 cm
Soil Water RegimeNot 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 month Not wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 month Not wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 month
Topsoil Properties
Gravel15 %10 %9 %10 %10 %10 %21 %4 %
Sand48 %42 %42 %49 %79 %42 %73 %41 %
Silt40 %38 %36 %28 %13 %38 %18 %37 %
Clay12 %20 %22 %23 %8 %20 %9 %22 %
USDA TextureLoamLoamLoamLoamLoamy sandLoamSandy loamLoam
Reference Bulk Density1.5 g/cm³1.41 g/cm³1.4 g/cm³1.4 g/cm³1.62 g/cm³1.41 g/cm³1.59 g/cm³1.4 g/cm³
Bulk Density0.96 g/cm³1.3 g/cm³1.37 g/cm³1.31 g/cm³1.45 g/cm³1.3 g/cm³1.45 g/cm³1.43 g/cm³
Organic Carbon3.15 %1.45 %1 %0.98 %2.59 %1.45 %1.4 %0.74 %
PH55.16.66.64.75.17.56.5
Clay Cation Exchange Capacity66 cmol kg⁻¹32 cmol kg⁻¹55 cmol kg⁻¹42 cmol kg⁻¹24 cmol kg⁻¹32 cmol kg⁻¹85 cmol kg⁻¹47 cmol kg⁻¹
Soil Cation Exchange Capacity17 cmol kg⁻¹12 cmol kg⁻¹16 cmol kg⁻¹13 cmol kg⁻¹8 cmol kg⁻¹12 cmol kg⁻¹12 cmol kg⁻¹13 cmol kg⁻¹
Base Saturation10 %38 %93 %83 %86 %38 %86 %91 %
Total Exchangeable Bases4.4 cmol kg⁻¹4.3 cmol kg⁻¹14 cmol kg⁻¹11.6 cmol kg⁻¹5.2 cmol kg⁻¹4.3 cmol kg⁻¹5.2 cmol kg⁻¹11 cmol kg⁻¹
Calcium Carbonate0 %0 %0 %0.1 %0 %0 %0 %0 %
Calcium Sulphate0 %0 %0 %0 %0 %0 %0 %0 %
Exchangeable Sodium0 %2 %2 %2 %0 %2 %1 %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-10.1 dS m-10.1 dS m-1
Subsoil Properties
Gravel17 %19 %12 %9 % 19 % 3 %
Sand55 %45 %41 %47 % 45 % 37 %
Silt33 %35 %34 %26 % 35 % 34 %
Clay12 %20 %25 %27 % 20 % 29 %
USDA TextureSandy loamLoamLoamSandy clay loam Loam Clay loam
Reference Bulk Density1.51 g/cm³1.42 g/cm³1.38 g/cm³1.38 g/cm³ 1.42 g/cm³ 1.35 g/cm³
Bulk Density1.29 g/cm³1.36 g/cm³1.39 g/cm³1.44 g/cm³ 1.36 g/cm³ 1.51 g/cm³
Organic Carbon1.13 %0.5 %0.37 %0.47 % 0.5 % 0.36 %
PH5.15.276.7 5.2 6.7
Clay Cation Exchange Capacity65 cmol kg⁻¹35 cmol kg⁻¹55 cmol kg⁻¹44 cmol kg⁻¹ 35 cmol kg⁻¹ 50 cmol kg⁻¹
Soil Cation Exchange Capacity13 cmol kg⁻¹9 cmol kg⁻¹15 cmol kg⁻¹15 cmol kg⁻¹ 9 cmol kg⁻¹ 14 cmol kg⁻¹
Base Saturation13 %33 %93 %92 % 33 % 93 %
Total Exchangeable Bases0.8 cmol kg⁻¹2.6 cmol kg⁻¹15.1 cmol kg⁻¹11.9 cmol kg⁻¹ 2.6 cmol kg⁻¹ 13.1 cmol kg⁻¹
Calcium Carbonate0 %0 %0.1 %0.1 % 0 % 0 %
Calcium Sulphate0 %0 %0 %0 % 0 % 0 %
Exchangeable Sodium0 %2 %2 %1 % 2 % 1 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-1 0.1 dS m-1 0.1 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