Ilperveld, Varkensland en Twiske
— Protected Area Boundary | | A | B | | | | | | Share | | 80 % | 20 % | | Soil Type | Terric Histosols | Fibric Histosols | Fibric Histosols | | Topsoil Texture | Medium | Fine | Fine | | Reference Depth | 100 cm | 100 cm | 100 cm | | Drainage | Very poor | Very poor | Very poor | | Available Water Capacity | 150 m | 150 m | 150 m | | Root Obstacle | 40 - 60 cm | 20 - 40 cm | 20 - 40 cm | | Impermeable Layer | None to 150 cm | None to 150 cm | None to 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 | Wet within 80 cm over 6 months, but not wet within 40 cm for over 11 month | | Topsoil Properties | | Gravel | 28 % | 1 % | 1 % | | Sand | 35 % | 20 % | 20 % | | Silt | 33 % | 40 % | 40 % | | Clay | 32 % | 40 % | 40 % | | USDA Texture | Clay loam | Clay | Clay | | Reference Bulk Density | 1.32 g/cm³ | 1.26 g/cm³ | 1.26 g/cm³ | | Bulk Density | 0.28 g/cm³ | 0.1 g/cm³ | 0.1 g/cm³ | | Organic Carbon | 39.4 % | 33.63 % | 33.63 % | | PH | 5.6 | 4.3 | 4.3 | | Clay Cation Exchange Capacity | 45 cmol kg⁻¹ | 45 cmol kg⁻¹ | 45 cmol kg⁻¹ | | Soil Cation Exchange Capacity | 87 cmol kg⁻¹ | 77 cmol kg⁻¹ | 77 cmol kg⁻¹ | | Base Saturation | 75 % | 62 % | 62 % | | Total Exchangeable Bases | 59.5 cmol kg⁻¹ | 31.4 cmol kg⁻¹ | 31.4 cmol kg⁻¹ | | Calcium Carbonate | 0 % | 0 % | 0 % | | Calcium Sulphate | 0 % | 0 % | 0 % | | Exchangeable Sodium | 1 % | 2 % | 2 % | | Electrical Conductivity | 0.1 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 | | Subsoil Properties | | Gravel | 5 % | 2 % | 2 % | | Sand | 52 % | 47 % | 47 % | | Silt | 23 % | 26 % | 26 % | | Clay | 25 % | 27 % | 27 % | | USDA Texture | Sandy clay loam | Sandy clay loam | Sandy clay loam | | Reference Bulk Density | 1.38 g/cm³ | 1.38 g/cm³ | 1.38 g/cm³ | | Bulk Density | 0.18 g/cm³ | 0.1 g/cm³ | 0.1 g/cm³ | | Organic Carbon | 38.46 % | 32.89 % | 32.89 % | | PH | 5.8 | 4.6 | 4.6 | | Clay Cation Exchange Capacity | 49 cmol kg⁻¹ | 71 cmol kg⁻¹ | 71 cmol kg⁻¹ | | Soil Cation Exchange Capacity | 88 cmol kg⁻¹ | 78 cmol kg⁻¹ | 78 cmol kg⁻¹ | | Base Saturation | 96 % | 40 % | 40 % | | Total Exchangeable Bases | 81.8 cmol kg⁻¹ | 27.4 cmol kg⁻¹ | 27.4 cmol kg⁻¹ | | Calcium Carbonate | 0 % | 0 % | 0 % | | Calcium Sulphate | 0 % | 0 % | 0 % | | Exchangeable Sodium | 1 % | 1 % | 1 % | | Electrical Conductivity | 0.1 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 |
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