Coll Machair
— Protected Area Boundary | | A | B | | | | | | Share | 70 % | 30 % | 40 % | 30 % | 20 % | 5 % | | Soil Type | Calcaric Regosols | Calcic Gleysols | Fibric Histosols | Umbric Gleysols | Ferric Podzols | Lithic Leptosols | | Topsoil Texture | Coarse | Coarse | Fine | Fine | Coarse | Medium | | Reference Depth | 100 cm | 100 cm | 100 cm | 100 cm | 100 cm | 10 cm | | Drainage | Somewhat excessive | Poor | Very poor | Very poor | Somewhat excessive | Imperfectly | | Available Water Capacity | 100 m | 150 m | 150 m | 150 m | 75 m | 15 mm | | Root Obstacle | None to 80 cm | None to 80 cm | None to 80 cm | None to 80 cm | 40 - 60 cm | | | Impermeable Layer | None to 150 cm | 80 - 150 cm | None to 150 cm | 40 - 80 cm | 40 - 80 cm | | | Soil Water Regime | 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 40 cm depth for over 11 month | Wet within 40 cm depth for over 11 month | Wet within 40 cm depth for over 11 month | | | Topsoil Properties | | Gravel | 15 % | 10 % | 1 % | 1 % | 3 % | 21 % | | Sand | 85 % | 76 % | 20 % | 17 % | 86 % | 42 % | | Silt | 8 % | 18 % | 40 % | 29 % | 8 % | 34 % | | Clay | 7 % | 6 % | 40 % | 54 % | 6 % | 24 % | | USDA Texture | Loamy sand | Sandy loam | Clay | Clay | Loamy sand | Loam | | Reference Bulk Density | 1.65 g/cm³ | 1.65 g/cm³ | 1.26 g/cm³ | 1.22 g/cm³ | 1.67 g/cm³ | 1.38 g/cm³ | | Bulk Density | 1.3 g/cm³ | 1.4 g/cm³ | 0.1 g/cm³ | 1.23 g/cm³ | 1.41 g/cm³ | 1.3 g/cm³ | | Organic Carbon | 0.49 % | 0.7 % | 33.63 % | 4.54 % | 2.02 % | 1.61 % | | PH | 7.9 | 7.1 | 4.3 | 5 | 4.5 | 7.5 | | Clay Cation Exchange Capacity | 111 cmol kg⁻¹ | 43 cmol kg⁻¹ | 45 cmol kg⁻¹ | 23 cmol kg⁻¹ | 78 cmol kg⁻¹ | 42 cmol kg⁻¹ | | Soil Cation Exchange Capacity | 5 cmol kg⁻¹ | 6 cmol kg⁻¹ | 77 cmol kg⁻¹ | 24 cmol kg⁻¹ | 5 cmol kg⁻¹ | 16 cmol kg⁻¹ | | Base Saturation | 100 % | 74 % | 62 % | 22 % | 17 % | 100 % | | Total Exchangeable Bases | 4.2 cmol kg⁻¹ | 4.9 cmol kg⁻¹ | 31.4 cmol kg⁻¹ | 7.1 cmol kg⁻¹ | 2.5 cmol kg⁻¹ | 15.5 cmol kg⁻¹ | | Calcium Carbonate | 6 % | 1 % | 0 % | 0 % | 0 % | 3.9 % | | Calcium Sulphate | 0 % | 0 % | 0 % | 0 % | 0 % | 0 % | | Exchangeable Sodium | 4 % | 2 % | 2 % | 1 % | 0 % | 3 % | | Electrical Conductivity | 0.2 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 | | Subsoil Properties | | Gravel | 14 % | 8 % | 2 % | 1 % | 3 % | | | Sand | 84 % | 58 % | 47 % | 22 % | 86 % | | | Silt | 9 % | 33 % | 26 % | 25 % | 6 % | | | Clay | 7 % | 9 % | 27 % | 53 % | 8 % | | | USDA Texture | Loamy sand | Sandy loam | Sandy clay loam | Clay | Loamy sand | | | Reference Bulk Density | 1.65 g/cm³ | 1.56 g/cm³ | 1.38 g/cm³ | 1.23 g/cm³ | 1.63 g/cm³ | | | Bulk Density | 1.6 g/cm³ | 1.57 g/cm³ | 0.1 g/cm³ | 1.28 g/cm³ | 1.57 g/cm³ | | | Organic Carbon | 0.4 % | 0.3 % | 32.89 % | 1.23 % | 0.51 % | | | PH | 8 | 7.8 | 4.6 | 5 | 5.1 | | | Clay Cation Exchange Capacity | 102 cmol kg⁻¹ | 38 cmol kg⁻¹ | 71 cmol kg⁻¹ | 15 cmol kg⁻¹ | 50 cmol kg⁻¹ | | | Soil Cation Exchange Capacity | 5 cmol kg⁻¹ | 10 cmol kg⁻¹ | 78 cmol kg⁻¹ | 19 cmol kg⁻¹ | 2 cmol kg⁻¹ | | | Base Saturation | 100 % | 81 % | 40 % | 27 % | 21 % | | | Total Exchangeable Bases | 4.2 cmol kg⁻¹ | 8 cmol kg⁻¹ | 27.4 cmol kg⁻¹ | 5.7 cmol kg⁻¹ | 1.5 cmol kg⁻¹ | | | Calcium Carbonate | 6 % | 3 % | 0 % | 0 % | 0 % | | | Calcium Sulphate | 0 % | 0 % | 0 % | 0 % | 0 % | | | Exchangeable Sodium | 5 % | 3 % | 1 % | 2 % | 0 % | | | Electrical Conductivity | 0.3 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 | |
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