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                Chickasaw National Recreation Area— Protected Area Boundary |  | A |  |  |  |  | Share | 60 % | 30 % | 10 % |  | Soil Type | Haplic Phaeozems | Luvic Kastanozems | Luvic Phaeozems |  | Topsoil Texture | Medium | Medium | Medium |  | Reference Depth | 100 cm | 100 cm | 100 cm |  | Drainage | Imperfectly | Moderately well | Moderately well |  | Available Water Capacity | 50 m | 150 m | 150 m |  | Phase 1 | Lithic |  |  |  | Topsoil Properties |  | Gravel | 7 % | 8 % | 4 % |  | Sand | 39 % | 36 % | 35 % |  | Silt | 38 % | 41 % | 41 % |  | Clay | 23 % | 23 % | 24 % |  | USDA Texture | Loam | Loam | Loam |  | Reference Bulk Density | 1.38 g/cm³ | 1.38 g/cm³ | 1.37 g/cm³ |  | Bulk Density | 1.33 g/cm³ | 1.2 g/cm³ | 1.28 g/cm³ |  | Organic Carbon | 1.83 % | 1.27 % | 1.68 % |  | PH | 6.4 | 7.3 | 6.2 |  | Clay Cation Exchange Capacity | 55 cmol kg⁻¹ | 66 cmol kg⁻¹ | 52 cmol kg⁻¹ |  | Soil Cation Exchange Capacity | 18 cmol kg⁻¹ | 23 cmol kg⁻¹ | 19 cmol kg⁻¹ |  | Base Saturation | 87 % | 100 % | 87 % |  | Total Exchangeable Bases | 11.4 cmol kg⁻¹ | 18.4 cmol kg⁻¹ | 16.1 cmol kg⁻¹ |  | Calcium Carbonate | 0 % | 4.5 % | 0 % |  | Calcium Sulphate | 0 % | 0 % | 0 % |  | Exchangeable Sodium | 1 % | 3 % | 2 % |  | Electrical Conductivity | 0.1 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 |  | Subsoil Properties |  | Gravel | 3 % | 5 % | 5 % |  | Sand | 43 % | 29 % | 30 % |  | Silt | 35 % | 42 % | 36 % |  | Clay | 22 % | 29 % | 34 % |  | USDA Texture | Loam | Clay loam | Clay loam |  | Reference Bulk Density | 1.4 g/cm³ | 1.33 g/cm³ | 1.31 g/cm³ |  | Bulk Density | 1.39 g/cm³ | 1.18 g/cm³ | 1.37 g/cm³ |  | Organic Carbon | 0.64 % | 0.57 % | 0.69 % |  | PH | 6.8 | 7.9 | 6.8 |  | Clay Cation Exchange Capacity | 64 cmol kg⁻¹ | 68 cmol kg⁻¹ | 64 cmol kg⁻¹ |  | Soil Cation Exchange Capacity | 16 cmol kg⁻¹ | 24 cmol kg⁻¹ | 24 cmol kg⁻¹ |  | Base Saturation | 92 % | 100 % | 92 % |  | Total Exchangeable Bases | 12.2 cmol kg⁻¹ | 21.1 cmol kg⁻¹ | 23.8 cmol kg⁻¹ |  | Calcium Carbonate | 0 % | 10 % | 0.4 % |  | Calcium Sulphate | 0 % | 0 % | 0 % |  | Exchangeable Sodium | 1 % | 3 % | 2 % |  | Electrical Conductivity | 0.1 dS m-1 | 3.6 dS m-1 | 0.1 dS m-1 | 
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