Astrakhanskiy Biosphere Reserve
— Protected Area Boundary | | A | B | C | | | | | | | Share | | 80 % | 10 % | 10 % | | | Soil Type | Mollic Gleysols | Mollie Fluvisols | Dystric Fluvisols | Eutric Fluvisols | Thionic Fluvisols | | Topsoil Texture | Medium | Coarse | Coarse | Coarse | Medium | | Reference Depth | 100 cm | 100 cm | 100 cm | 100 cm | 100 cm | | Drainage | Poor | Poor | Poor | Poor | Poor | | Available Water Capacity | 150 m | 150 m | 150 m | 150 m | 150 m | | Phase 1 | Phreatic | Phreatic | Flooded | Flooded | Phreatic | | Phase 2 | Saline | | Phreatic | Saline | Saline | | Root Obstacle | None to 80 cm | None to 80 cm | 0 - 80 cm | 0 - 80 cm | None to 80 cm | | Impermeable Layer | None to 150 cm | None to 150 cm | None to 150 cm | None to 150 cm | None to 150 cm | | Soil Water Regime | 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 80 cm over 6 months, but not wet within 40 cm for over 11 month | Wet within 40 cm depth for over 11 month | | Topsoil Properties | | Gravel | 4 % | 10 % | 10 % | 18 % | 4 % | | Sand | 39 % | 77 % | 79 % | 80 % | 34 % | | Silt | 39 % | 15 % | 12 % | 12 % | 37 % | | Clay | 22 % | 8 % | 9 % | 8 % | 29 % | | USDA Texture | Loam | Sandy loam | Sandy loam | Loamy sand | Clay loam | | Reference Bulk Density | 1.39 g/cm³ | 1.61 g/cm³ | 1.6 g/cm³ | 1.62 g/cm³ | 1.34 g/cm³ | | Bulk Density | 1.28 g/cm³ | 1.4 g/cm³ | 1.39 g/cm³ | 1.27 g/cm³ | 1.36 g/cm³ | | Organic Carbon | 1.65 % | 0.87 % | 0.87 % | 0.58 % | 2.47 % | | PH | 6.6 | 6.4 | 5.3 | 6.8 | 4.4 | | Clay Cation Exchange Capacity | 45 cmol kg⁻¹ | 72 cmol kg⁻¹ | 34 cmol kg⁻¹ | 64 cmol kg⁻¹ | 15 cmol kg⁻¹ | | Soil Cation Exchange Capacity | 17 cmol kg⁻¹ | 9 cmol kg⁻¹ | 5 cmol kg⁻¹ | 7 cmol kg⁻¹ | 19 cmol kg⁻¹ | | Base Saturation | 87 % | 87 % | 55 % | 89 % | 94 % | | Total Exchangeable Bases | 9.8 cmol kg⁻¹ | 6.8 cmol kg⁻¹ | 2.1 cmol kg⁻¹ | 7.4 cmol kg⁻¹ | 16.7 cmol kg⁻¹ | | Calcium Carbonate | 0 % | 0.1 % | 0 % | 0 % | 0 % | | Calcium Sulphate | 0 % | 0 % | 0 % | 0 % | 0 % | | Exchangeable Sodium | 2 % | 0 % | 3 % | 3 % | 0 % | | Electrical Conductivity | 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 | 3 % | 10 % | 17 % | 10 % | 8 % | | Sand | 37 % | 77 % | 79 % | 79 % | 27 % | | Silt | 35 % | 13 % | 11 % | 11 % | 41 % | | Clay | 28 % | 10 % | 10 % | 10 % | 32 % | | USDA Texture | Clay loam | Sandy loam | Sandy loam | Sandy loam | Clay loam | | Reference Bulk Density | 1.35 g/cm³ | 1.58 g/cm³ | 1.58 g/cm³ | 1.59 g/cm³ | 1.31 g/cm³ | | Bulk Density | 1.35 g/cm³ | 1.5 g/cm³ | 1.5 g/cm³ | 1.44 g/cm³ | 1.39 g/cm³ | | Organic Carbon | 0.69 % | 0.5 % | 0.26 % | 0.24 % | 1.62 % | | PH | 7.2 | 6.4 | 5.5 | 6.9 | 3.5 | | Clay Cation Exchange Capacity | 44 cmol kg⁻¹ | 52 cmol kg⁻¹ | 38 cmol kg⁻¹ | 57 cmol kg⁻¹ | 30 cmol kg⁻¹ | | Soil Cation Exchange Capacity | 15 cmol kg⁻¹ | 7 cmol kg⁻¹ | 4 cmol kg⁻¹ | 6 cmol kg⁻¹ | 14 cmol kg⁻¹ | | Base Saturation | 88 % | 90 % | 46 % | 93 % | 77 % | | Total Exchangeable Bases | 10.7 cmol kg⁻¹ | 7.1 cmol kg⁻¹ | 1.5 cmol kg⁻¹ | 9 cmol kg⁻¹ | 11.9 cmol kg⁻¹ | | Calcium Carbonate | 4 % | 0 % | 0 % | 0.1 % | 0 % | | Calcium Sulphate | 0 % | 0 % | 0 % | 0 % | 0 % | | Exchangeable Sodium | 1 % | 0 % | 2 % | 2 % | 5 % | | Electrical Conductivity | 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 |
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