ЭКОЛОГИЧЕСКИЙ МОНИТОРИНГ ПАРАМЕТРОВ ПЛОДОРОДИЯ ПОЧВ НЕКОТОРЫХ ВНУТРИБАССЕЙНОВЫХ ТЕРРИТОРИЙ ШАХДАГСКОГО НАЦИОНАЛЬНОГО ПАРКА
Changes in soil fertility parameters across the studied areas
1957–2026; all differences indicate an absolute change between the baseline (1957–1960) and the recent evaluation period (2016–2026). Negative values denote a decline in the respective parameter, while positive values indicate an increase
Soil Fertility Parameters
| Depth (cm) | Gusarchay | Gudialchay | Garachay | ||||||
Mountain-meadow soddy soils | Mountain-forest browns soils | Mountain forest cinnamonic soils | ||||||||
1957-1960 | 2016-2026 | Diffe-rence | 1957-1960 | 2016-2026 | Diffe-rence | 1957-1960 | 2016-2026 | Diffe-rence | ||
Humus content, % | 0-50 | 4.74 | 4.42 | -0.32 | 3.72 | 2.85 | -0.87 | 4.20 | 3.15 | -0.95 |
Humus reserve, t/ha
| 0-20 | 119 | 88 | -31 | 114 | 83 | -31 | 115 | 77 | -38 |
0-50 | 247 | 184 | -63 | 208 | 181 | -27 | 223 | 156 | -67 | |
0-100 | 375 | 273 | -102 | 297 | 279 | -18 | 317 | 228 | -89 | |
Crude nitrogen, % | 0-50 | 0.34 | 0.30 | -0.04 | 0.29 | 0.23 | -0.06 | 0.30 | 0.25 | -0.05 |
Gross phosphorus, % | 0-50 | 0.31 | 0.28 | -0.03 | 0.26 | 0.22 | -0.04 | 0.24 | 0.18 | -0.06 |
pH (aqueous suspension) | 0-50 | 6.10 | 6.28 | +0.18 | 6.50 | 6.82 | +0.32 | 6.67 | 6.89 | +0.22 |
Absorbed bases, mg-equiv/100g soil | 0-50 | 38.50 | 35.13 | -3.37 | 37.66 | 35.30 | -2.36 | 42.37 | 38.90 | -3.47 |