Estuaires picards : Baie de Somme et d'Authie
— Protected Area Boundary | | A | | | | | Share | 70 % | 30 % | | Soil Type | Eutric Gleysols | Terric Histosols | | Topsoil Texture | Fine | Medium | | Reference Depth | 100 cm | 100 cm | | Drainage | Very poor | Very poor | | Available Water Capacity | 150 m | 150 m | | Root Obstacle | None to 80 cm | None to 80 cm | | Impermeable Layer | 80 - 150 cm | 80 - 150 cm | | Soil Water Regime | Wet within 80 cm over 6 months, but not wet within 40 cm for over 11 month | Wet within 40 cm depth for over 11 month | | Topsoil Properties | | Gravel | 1 % | 28 % | | Sand | 17 % | 35 % | | Silt | 32 % | 33 % | | Clay | 51 % | 32 % | | USDA Texture | Clay | Clay loam | | Reference Bulk Density | 1.22 g/cm³ | 1.32 g/cm³ | | Bulk Density | 1.25 g/cm³ | 0.28 g/cm³ | | Organic Carbon | 1.25 % | 39.4 % | | PH | 5.8 | 5.6 | | Clay Cation Exchange Capacity | 37 cmol kg⁻¹ | 45 cmol kg⁻¹ | | Soil Cation Exchange Capacity | 25 cmol kg⁻¹ | 87 cmol kg⁻¹ | | Base Saturation | 78 % | 75 % | | Total Exchangeable Bases | 18.9 cmol kg⁻¹ | 59.5 cmol kg⁻¹ | | Calcium Carbonate | 0 % | 0 % | | Calcium Sulphate | 0 % | 0 % | | Exchangeable Sodium | 2 % | 1 % | | Electrical Conductivity | 0.1 dS m-1 | 0.1 dS m-1 | | Subsoil Properties | | Gravel | 1 % | 5 % | | Sand | 19 % | 52 % | | Silt | 29 % | 23 % | | Clay | 52 % | 25 % | | USDA Texture | Clay | Sandy clay loam | | Reference Bulk Density | 1.23 g/cm³ | 1.38 g/cm³ | | Bulk Density | 1.35 g/cm³ | 0.18 g/cm³ | | Organic Carbon | 0.45 % | 38.46 % | | PH | 6 | 5.8 | | Clay Cation Exchange Capacity | 40 cmol kg⁻¹ | 49 cmol kg⁻¹ | | Soil Cation Exchange Capacity | 23 cmol kg⁻¹ | 88 cmol kg⁻¹ | | Base Saturation | 84 % | 96 % | | Total Exchangeable Bases | 17 cmol kg⁻¹ | 81.8 cmol kg⁻¹ | | Calcium Carbonate | 0 % | 0 % | | Calcium Sulphate | 0 % | 0 % | | Exchangeable Sodium | 3 % | 1 % | | Electrical Conductivity | 0.1 dS m-1 | 0.1 dS m-1 |
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