Figure 1
Figure 2
Figure 3
Figure 4
Percentage contribution of phosphorus fraction (F1–F5) in total content in tested soils_
| Genetic horizon | Phosphorus fraction | ||||
|---|---|---|---|---|---|
| F1 | F2 | F3 | F4 | F5 | |
| Profile 1 | |||||
| M1 | 0.370 | 6.22 | 31.5 | 41.1 | 20.8 |
| M2 | 0.150 | 5.07 | 22.1 | 50.0 | 22.7 |
| Oe1 | 0.140 | 5.31 | 13.1 | 51.9 | 29.6 |
| Oe2 | 0.090 | 3.04 | 3.00 | 52.2 | 41.7 |
| Oe3 | 0.080 | 1.46 | 8.23 | 60.0 | 30.2 |
| Profile 2 | |||||
| M1 | 0.390 | 8.06 | 22.0 | 44.8 | 24.8 |
| M2 | 0.250 | 5.46 | 12.5 | 54.4 | 27.4 |
| M3 | 0.210 | 3.97 | 9.12 | 53.0 | 33.7 |
| Oa1 | 0.160 | 3.21 | 7.40 | 55.9 | 33.3 |
| Oa2 | 0.110 | 1.67 | 10.0 | 53.9 | 34.3 |
| Mean for murshic horizons (M) | 0.274 | 5.76 | 19.4 | 48.7 | 25.9 |
| Mean for peat horizons (O) | 0.116 | 2.94 | 8.35 | 54.8 | 33.8 |
Some properties of tested soil_
| Genetic horizon,depth (cm) | pH | D (g·cm−3) | SOM (g·kg−1) | TC/TN | TC/PT |
|---|---|---|---|---|---|
| Organic hemic-muck soil – profile 1 | |||||
| M1, mursh, 0–10 | 6.20 | 0.404 | 620.6 | 11.3 | 109.5 |
| M2, mursh,10–25 | 6.17 | 0.380 | 670.6 | 12.2 | 127.7 |
| Oe1, reed peat, 25–40 | 6.00 | 0.184 | 855.1 | 15.8 | 435.1 |
| Oe2, reed peat, 40–70 | 5.81 | 0.155 | 899.9 | 16.2 | 998.1 |
| Oe3,reed peat, 70–100 | 5.70 | 0.180 | 822.3 | 15.3 | 608.4 |
| Organic sapric-muck soils – profile 2 | |||||
| M1, mursh, 0–10 | 5.20 | 0.420 | 634.4 | 10.7 | 161.4 |
| M2, mursh, 10–20 | 5.41 | 0.334 | 708.6 | 12.0 | 258.5 |
| M3, mursh, 20–35 | 5.50 | 0.328 | 737.9 | 12.8 | 326.7 |
| Oa1, alder peat, 35–50 | 5.99 | 0.193 | 796.5 | 16.8 | 822.1 |
| Oa2, alder peat, 50–65 | 5.85 | 0.235 | 765.5 | 15.8 | 595.2 |
The content, enrichment index and phosphorus recourses in tested soils_
| Genetic horizon | PT(g·kg−1) | PT(g·dm−3) | PZAS(kg·m−2) |
|---|---|---|---|
| Profile 1 | |||
| M1 | 3.29 (4.03) Enrichment index of phosphorus to mean content in peat. | 1.33 (9.23) Enrichment index of phosphorus to mean content in peat. | |
| M2 | 3.05 (3.73) | 1.16 (8.04) | |
| Oe1 | 1.14 | 0.210 | (75.70.405 :24.3) Percentage (%) of mucky and peaty horizons (M:O). |
| Oe2 | 0.523 | 0.081 | |
| Oe3 | 0.784 | 0.141 | |
| Profile 2 | |||
| M1 | 2.28 (3.49) | 0.958 (6.75) | |
| M2 | 1.59 (2.43) | 0.531 (3.74) | |
| M3 | 1.31 (2.00) | 0.430 (3.03) | (83.40.256 :16.6) Percentage (%) of mucky and peaty horizons (M:O). |
| Oa1 | 0.562 | 0.108 | |
| Oa2 | 0.746 | 0.175 | |
Correlation of the total phosphorus content with soil properties_
| Parameter | pHKCl | D | TC/TN | Content | |||||
|---|---|---|---|---|---|---|---|---|---|
| SOM | Fe | Mn | Al | Ca | Mg | ||||
| PT | 0.205 | 0.880 | −0.849 | −0.859 | 0.950 | 0.891 | 0.713 | −0.295 | −0.482 |