Field Indicators of Hydric Soils in the United States - ITC
Field Indicators of Hydric Soils in the United States - ITC
Field Indicators of Hydric Soils in the United States - ITC
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<strong>Field</strong> <strong>Indicators</strong> <strong>of</strong> <strong>Hydric</strong> <strong>Soils</strong>Appendix B: Indicator Correlations—Cont<strong>in</strong>ued1987 Manual Regional <strong>Indicators</strong>Not listed <strong>in</strong> 1987 manual—Cont<strong>in</strong>uedTA1 Playa Rim Strat. LayersTA2 Structureless MuckTF1 ? cm Mucky or PeatTF2 Red Parent MaterialTF4 Y Below Dark SurfaceTF5 Y Below Thick Dark SurfaceTF6 Calcic Dark SurfaceTF7 Thick Dark Surface 2/1TS2 Thick Sandy Dark SurfaceTF7 Thick Dark Surface 2/1TF11 Reduced VerticSandy soils:a. Organic soils (Histosols) A1 Histosolb. Histic epipedon A2 Histic EpipedonA3 Black Histicc. Sulfidic material A4 Hydrogen sulfided. Aquic or peraquic moisture regime —————————e. Reduc<strong>in</strong>g soil conditions —————————f. Iron and manganese concretions —————————g. High organic matter content <strong>in</strong> A6 Organic Bodies<strong>the</strong> surface horizonA7 5 cm Mucky M<strong>in</strong>eralA8 Muck PresenceA9 1 cm MuckA10 2 cm MuckS1 Sandy Mucky M<strong>in</strong>eralS2 2.5 cm Mucky or PeatS3 5 cm Mucky Peat or PeatS7 Dark SurfaceTA2 Structureless MuckTS2 Thick Sandy Dark Surfaceh. Streak<strong>in</strong>g <strong>of</strong> subsurface horizons S6 Stripped Matrixby organic matterS8 Polyvalue Below Surfacei. Organic pan S9 Th<strong>in</strong> Dark Surfacej. <strong>Soils</strong> appear<strong>in</strong>g on <strong>the</strong> hydric soils list —————————(430, FIHS, Ver. 5.01, March 2003) 33
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