Research Article
Maya and WRB Soil Classification in Yucatan, Mexico: Differences and Similarities
Table 7
Properties of soils located in mounds at Hocabá, Yucatán, México.
| | Soil horizon | Depth cm | Dry color | Structure AS, ASi | PSD | TC | Gr % | St % | CO3 % | pH | OM % | CEC cmol+ kg−1 | Exchange Cations cmol+ kg− | BS % | | Sand % | Clay % | Silt % | Ca | Mg | Na | K |
| | Hyperskeletic Leptosol | | A | 0–10 | 7.5YR 2.5/1 | GR, VF-M | 70.6 | 15.7 | 13.7 | SL | 50 | 30 | 12 | 8.0 | 45.0 | 66.2 | 54.0 | 1.8 | 0.1 | 3.3 | 89 | | Ak/C | 10–45 | 7.5YR 3/1 | GR, VF-L | 58.8 | 17.6 | 23.5 | SL | 67 | 25 | 4 | 8.0 | 36.4 | 19 | 19.2 | 5.4 | 0.4 | 3.1 | 100 |
| | Rendzic Hyperskeletic Leptosol | | A | 0–7 | 10YR 2.5/1 | GR, F-M | 63.7 | 15.7 | 20.6 | SL | 51 | 40 | 31 | 7.8 | 34.5 | 54.1 | 38.4 | 12.6 | 0.2 | 0.9 | 100 | | A/C | 7–23 | 10YR 2.5/1 | GR, VF-M | 71.6 | 13.7 | 14.7 | SL | 51 | 45 | 43 | 7.7 | 28.6 | 24.4 | 39.0 | 27.0 | 0.2 | 1.0 | 100 |
| | Leptic Skeletal Calcisol | | A | 0-1 | 7.5YR 2.5/1 | GR, VF-L | 55.0 | 20.0 | 25.0 | SCL | 30 | 10 | 41 | 8.0 | 30.6 | 40.7 | 38.6 | 0.7 | 0.2 | 2.8 | 100 | | Ak/Ck | 1–15 | 7.5YR 4/3 | GR, VF-M | 62.7 | 13.7 | 23.5 | SL | 36 | 17 | 34 | 8.1 | 19.4 | 32.2 | 35.3 | 1.1 | ND | 0.6 | 100 | | Ck/Ak | 15–50 | 7.5YR 4/3 | SBK, VF-L | 62.7 | 15.7 | 21.6 | SL | 34 | 20 | 42 | 8.0 | 19.5 | 26.7 | 35.3 | 0.9 | 0.5 | 0.6 | 100 |
| | Epipetric Skeletic Calcisol | | Ak | 0–4 | 10YR 3/3 | GR, F-H | 49.0 | 19.6 | 31.4 | L | 22 | 0 | 30 | 8.0 | 21.3 | 35.5 | 25.4 | 4.0 | 0.3 | 1.8 | 100 | | Bk1 | 4–20 | 10YR 4/3 | SBK, F-M | 53.9 | 31.4 | 14.7 | SCL | 25 | 15 | 35 | 8.2 | 11.3 | 16.7 | 14.9 | 1.1 | 0.3 | 1.0 | 100 | | Bk2 | 20–35 | 10YR 4/1 | SBK, VF-L | 52.9 | 21.6 | 25.6 | SCL | 21 | 20 | 36 | 8.3 | 12.9 | 18.2 | 16.5 | 1.1 | 0.3 | 0.8 | 100 | | Ckm | 35–40 | | | | | | | | | >50 | | | | | | | | | | IIAk | 40–60 | 10YR 5/1 | GR, VF-L | 59.8 | 19.6 | 20.6 | SL | 22 | 15 | 37 | 8.6 | 10.6 | 14.4 | 12.1 | 0.4 | 0.2 | 0.5 | 100 |
| | Humic-Hyperskeletal Leptosol | | Ak1 | 0–2 | 7.5YR 2.5/1 | GR, VF-M | 69.0 | 11.0 | 20.0 | SL | 31 | 0 | 36 | 7.5 | 49.9 | 59.9 | 32.8 | 34.1 | 0.1 | 1.1 | 100 | | Ak2 | 2–22 | 7.5YR 3.5/1 | GR, VF-L | 67.0 | 13.0 | 20.0 | SL | 0 | 90 | 44 | 7.7 | 42.6 | 37.6 | 41.8 | 22.3 | 0.1 | 1.2 | 100 | | C/A | 22–80 | 7.5YR 4/1 | SBK, VF-L | 71.0 | 12.0 | 17.0 | SL | 0 | 95 | 47 | 7.8 | 18.0 | 28.6 | 21.1 | 8.4 | 0.1 | 0.2 | 100 |
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PSD: particle size distribution. AS: aggregates shape (GR: granular, SBK: subangular blocky, ABK: angular blocky). ASi: aggregates size (VF: very fine, F: fine, M: medium). Stability (L: low, M: moderate, H: high). L: loam; CL: clay loam; C: clay; TC: textural class. Gr: gravels, St: stones; OM: organic matter, CEC: cation exchange capacity, BS: base saturation.
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