Big Bend Biosphere Reserve
— Protected Area Boundary | | A | B | | | | | | Share | 60 % | 20 % | 20 % | | | Soil Type | Calcaric Regosols | Haplic Yermosols | Lithosols | Eutric Regosols | | Topsoil Texture | Medium | Medium | Medium | Coarse | | Reference Depth | 100 cm | 100 cm | 10 cm | 100 cm | | Drainage | Imperfectly | Moderately well | Imperfectly | Somewhat excessive | | Available Water Capacity | 50 m | 150 m | 15 mm | 100 m | | Phase 1 | Lithic | | | | | Topsoil Properties | | Gravel | 17 % | 20 % | 26 % | 19 % | | Sand | 43 % | 41 % | 43 % | 73 % | | Silt | 35 % | 39 % | 34 % | 23 % | | Clay | 22 % | 20 % | 23 % | 4 % | | USDA Texture | Loam | Loam | Loam | Sandy loam | | Reference Bulk Density | 1.4 g/cm³ | 1.41 g/cm³ | 1.39 g/cm³ | 1.7 g/cm³ | | Bulk Density | 1.4 g/cm³ | 1.51 g/cm³ | 1.3 g/cm³ | 1.52 g/cm³ | | Organic Carbon | 0.77 % | 0.41 % | 1.4 % | 0.41 % | | PH | 8 | 8.3 | 7.6 | 6 | | Clay Cation Exchange Capacity | 40 cmol kg⁻¹ | 47 cmol kg⁻¹ | 42 cmol kg⁻¹ | 140 cmol kg⁻¹ | | Soil Cation Exchange Capacity | 17 cmol kg⁻¹ | 8 cmol kg⁻¹ | 15 cmol kg⁻¹ | 14 cmol kg⁻¹ | | Base Saturation | 100 % | 100 % | 100 % | 80 % | | Total Exchangeable Bases | 31.1 cmol kg⁻¹ | 18.1 cmol kg⁻¹ | 15.6 cmol kg⁻¹ | 11.2 cmol kg⁻¹ | | Calcium Carbonate | 15 % | 1.5 % | 3.9 % | 0 % | | Calcium Sulphate | 0 % | 0.1 % | 0 % | 0 % | | Exchangeable Sodium | 2 % | 6 % | 4 % | 2 % | | Electrical Conductivity | 0.3 dS m-1 | 1 dS m-1 | 0.1 dS m-1 | 0 dS m-1 | | Subsoil Properties | | Gravel | 18 % | 27 % | | 19 % | | Sand | 38 % | 38 % | | 73 % | | Silt | 36 % | 40 % | | 23 % | | Clay | 26 % | 22 % | | 4 % | | USDA Texture | Loam | Loam | | Sandy loam | | Reference Bulk Density | 1.36 g/cm³ | 1.39 g/cm³ | | 1.7 g/cm³ | | Bulk Density | 1.52 g/cm³ | 1.49 g/cm³ | | 1.53 g/cm³ | | Organic Carbon | 0.53 % | 0.22 % | | 0.15 % | | PH | 8.1 | 8.3 | | 6.4 | | Clay Cation Exchange Capacity | 50 cmol kg⁻¹ | 42 cmol kg⁻¹ | | 140 cmol kg⁻¹ | | Soil Cation Exchange Capacity | 15 cmol kg⁻¹ | 9 cmol kg⁻¹ | | 13 cmol kg⁻¹ | | Base Saturation | 100 % | 100 % | | 85 % | | Total Exchangeable Bases | 41.1 cmol kg⁻¹ | 26.8 cmol kg⁻¹ | | 11.1 cmol kg⁻¹ | | Calcium Carbonate | 15 % | 4.5 % | | 0.2 % | | Calcium Sulphate | 0 % | 0.7 % | | 0.1 % | | Exchangeable Sodium | 1 % | 5 % | | 3 % | | Electrical Conductivity | 0.3 dS m-1 | 3.8 dS m-1 | | 0.1 dS m-1 |
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