Plateau de l'Arbois

Location:France
Area:10,606 acres (4,292 hectares)
Species:All  Endangered  Invasive
Climate:View Climate Data
Land Use:View Land Use Data
Köppen climate classification:Csa (Climate: warm temperate; Precipitation: summer dry; Temperature: hot summer)
Natura 2000 Data Sheet:View Data Sheet  Explanatory notes

Ecoregions

Northeastern Spain and Southern France Mediterranean forests

Soils

Protected Area Boundary
 AB
   
Share50 %30 %20 %70 %20 %10 %
Soil TypeRendzic LeptosolsCalcaric CambisolsEutric RegosolsCalcaric CambisolsChromic LuvisolsLithic Leptosols
Topsoil TextureMediumMediumMediumMediumMediumMedium
Reference Depth30 cm100 cm100 cm100 cm100 cm10 cm
DrainageImperfectlyModerately wellModerately wellModerately wellModerately wellImperfectly
Available Water Capacity15 mm100 m150 m100 m150 m15 mm
Phase 1StonyStony Stony Stony
Root Obstacle 40 - 60 cm40 - 60 cm40 - 60 cmNone to 80 cm 
Impermeable Layer None 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 month 
Topsoil Properties
Gravel16 %6 %25 %6 %12 %21 %
Sand37 %36 %47 %36 %48 %42 %
Silt44 %43 %34 %43 %28 %34 %
Clay19 %21 %19 %21 %24 %24 %
USDA TextureLoamLoamLoamLoamLoamLoam
Reference Bulk Density1.41 g/cm³1.39 g/cm³1.43 g/cm³1.39 g/cm³1.4 g/cm³1.38 g/cm³
Bulk Density1.24 g/cm³1.41 g/cm³1.21 g/cm³1.41 g/cm³1.53 g/cm³1.3 g/cm³
Organic Carbon2.13 %0.65 %0.98 %0.65 %0.83 %1.61 %
PH7.586.486.37.5
Clay Cation Exchange Capacity80 cmol kg⁻¹52 cmol kg⁻¹40 cmol kg⁻¹52 cmol kg⁻¹39 cmol kg⁻¹42 cmol kg⁻¹
Soil Cation Exchange Capacity27 cmol kg⁻¹16 cmol kg⁻¹12 cmol kg⁻¹16 cmol kg⁻¹12 cmol kg⁻¹16 cmol kg⁻¹
Base Saturation100 %100 %78 %100 %88 %100 %
Total Exchangeable Bases28.8 cmol kg⁻¹24.3 cmol kg⁻¹14 cmol kg⁻¹24.3 cmol kg⁻¹10 cmol kg⁻¹15.5 cmol kg⁻¹
Calcium Carbonate6 %7 %0 %7 %0 %3.9 %
Calcium Sulphate0 %0 %0 %0 %0 %0 %
Exchangeable Sodium2 %1 %1 %1 %1 %3 %
Electrical Conductivity0.1 dS m-10.4 dS m-10.1 dS m-10.4 dS m-10.1 dS m-10.1 dS m-1
Subsoil Properties
Gravel 10 %28 %10 %8 % 
Sand 34 %51 %34 %41 % 
Silt 43 %31 %43 %25 % 
Clay 23 %18 %23 %34 % 
USDA Texture LoamLoamLoamClay loam 
Reference Bulk Density 1.38 g/cm³1.44 g/cm³1.38 g/cm³1.33 g/cm³ 
Bulk Density 1.45 g/cm³1.45 g/cm³1.45 g/cm³1.51 g/cm³ 
Organic Carbon 0.43 %0.4 %0.43 %0.4 % 
PH 8.16.98.16.4 
Clay Cation Exchange Capacity 54 cmol kg⁻¹56 cmol kg⁻¹54 cmol kg⁻¹41 cmol kg⁻¹ 
Soil Cation Exchange Capacity 16 cmol kg⁻¹11 cmol kg⁻¹16 cmol kg⁻¹15 cmol kg⁻¹ 
Base Saturation 100 %89 %100 %90 % 
Total Exchangeable Bases 28.7 cmol kg⁻¹10.3 cmol kg⁻¹28.7 cmol kg⁻¹12 cmol kg⁻¹ 
Calcium Carbonate 8.7 %0 %8.7 %0 % 
Calcium Sulphate 0.4 %0 %0.4 %0 % 
Exchangeable Sodium 1 %2 %1 %1 % 
Electrical Conductivity 0.3 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