Reserva de la Biosfera de Doñana
— Protected Area Boundary | | A | B | | | | | | Share | 60 % | 40 % | 60 % | 30 % | 10 % | | Soil Type | Luvic Arenosols | Cambic Arenosols | Eutric Vertisols | Gleyic Solonchaks | Eutric Fluvisols | | Topsoil Texture | Coarse | Coarse | Fine | Fine | Medium | | Reference Depth | 100 cm | 100 cm | 100 cm | 100 cm | 100 cm | | Drainage | Moderately well | Somewhat excessive | Poor | Poor | Poor | | Available Water Capacity | 100 m | 100 m | 125 m | 100 m | 150 m | | Phase 1 | | | Saline | Saline | | | Root Obstacle | None to 80 cm | None to 80 cm | None to 80 cm | None to 80 cm | None to 80 cm | | Impermeable Layer | None to 150 cm | None to 150 cm | None to 150 cm | 40 - 80 cm | None to 150 cm | | Soil Water Regime | 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 | Wet within 80 cm for 3 to 6 months, but not wet within 40 cm for over 1 month | Wet within 80 cm over 6 months, but not wet within 40 cm for over 11 month | Wet within 80 cm for 3 to 6 months, but not wet within 40 cm for over 1 month | | Misc. Property | | | Vertic (cracks of more than 1 cm wide) | | | | Topsoil Properties | | Gravel | 3 % | 2 % | 4 % | 4 % | 4 % | | Sand | 90 % | 89 % | 19 % | 22 % | 39 % | | Silt | 5 % | 6 % | 25 % | 26 % | 40 % | | Clay | 5 % | 5 % | 56 % | 52 % | 21 % | | USDA Texture | Sand | Sand | Clay | Clay | Loam | | Reference Bulk Density | 1.71 g/cm³ | 1.7 g/cm³ | 1.22 g/cm³ | 1.23 g/cm³ | 1.4 g/cm³ | | Bulk Density | 1.5 g/cm³ | 1.57 g/cm³ | 1.56 g/cm³ | 1.23 g/cm³ | 1.36 g/cm³ | | Organic Carbon | 0.39 % | 0.5 % | 1.05 % | 0.53 % | 0.86 % | | PH | 5.8 | 6 | 6.9 | 8.8 | 7.2 | | Clay Cation Exchange Capacity | 35 cmol kg⁻¹ | 40 cmol kg⁻¹ | 70 cmol kg⁻¹ | 39 cmol kg⁻¹ | 63 cmol kg⁻¹ | | Soil Cation Exchange Capacity | 3 cmol kg⁻¹ | 3 cmol kg⁻¹ | 43 cmol kg⁻¹ | 29 cmol kg⁻¹ | 16 cmol kg⁻¹ | | Base Saturation | 76 % | 99 % | 100 % | 100 % | 91 % | | Total Exchangeable Bases | 2 cmol kg⁻¹ | 2 cmol kg⁻¹ | 40.9 cmol kg⁻¹ | 46.5 cmol kg⁻¹ | 16.9 cmol kg⁻¹ | | Calcium Carbonate | 0 % | 0 % | 0.2 % | 9 % | 0.5 % | | Calcium Sulphate | 0 % | 0 % | 0 % | 0.4 % | 0 % | | Exchangeable Sodium | 3 % | 2 % | 1 % | 45 % | 2 % | | Electrical Conductivity | 0.1 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 | 12.7 dS m-1 | 0.1 dS m-1 | | Subsoil Properties | | Gravel | 4 % | 1 % | 5 % | 6 % | 7 % | | Sand | 87 % | 89 % | 18 % | 24 % | 41 % | | Silt | 5 % | 6 % | 24 % | 23 % | 38 % | | Clay | 8 % | 5 % | 58 % | 53 % | 21 % | | USDA Texture | Loamy sand | Sand | Clay | Clay | Loam | | Reference Bulk Density | 1.63 g/cm³ | 1.7 g/cm³ | 1.21 g/cm³ | 1.23 g/cm³ | 1.4 g/cm³ | | Bulk Density | 1.5 g/cm³ | 1.55 g/cm³ | 1.6 g/cm³ | 1.31 g/cm³ | 1.39 g/cm³ | | Organic Carbon | 0.2 % | 0.3 % | 0.59 % | 0.38 % | 0.38 % | | PH | 5.7 | 5.9 | 7.5 | 8.8 | 7.5 | | Clay Cation Exchange Capacity | 34 cmol kg⁻¹ | 42 cmol kg⁻¹ | 70 cmol kg⁻¹ | 48 cmol kg⁻¹ | 61 cmol kg⁻¹ | | Soil Cation Exchange Capacity | 3 cmol kg⁻¹ | 2 cmol kg⁻¹ | 42 cmol kg⁻¹ | 29 cmol kg⁻¹ | 14 cmol kg⁻¹ | | Base Saturation | 75 % | 98 % | 100 % | 100 % | 96 % | | Total Exchangeable Bases | 2.3 cmol kg⁻¹ | 1.4 cmol kg⁻¹ | 44.2 cmol kg⁻¹ | 55.3 cmol kg⁻¹ | 15.2 cmol kg⁻¹ | | Calcium Carbonate | 0 % | 0 % | 0.8 % | 9 % | 2.5 % | | Calcium Sulphate | 0 % | 0 % | 0 % | 0.5 % | 0 % | | Exchangeable Sodium | 3 % | 3 % | 2 % | 42 % | 3 % | | Electrical Conductivity | 0.1 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 | 21.5 dS m-1 | 0.1 dS m-1 |
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