Scientific Papers Series A. Agronomy

Table 1. Analytical data of the chemical features of the dystric cambisols from Piatra Craiului National Parks
No. Depth pH pH Nt
Horizont
profiles cm H 2 O CaCl 2 (%)
1
2
3
4
5
6
Ct
Ah
SB
K
Na
(%) (me/100g) (me/100g) (me/100g) (me/100g) (me/100g) (me/100g) (me/100g) (%)
Aou 0-10 3.27 2.49 1.173 12.09 61.54 4.97 2.25 0.11 0.09 2.52 66.51 7.47
AB 10-20 3.39 2.76 0.363 7.06 37.43 1.52 0.52 0.08 0.66 0.25 38.95 3.89
Bs1 20-40 4.07 3.43 0.223 4.36 24.38 0.93 0.28 0.05 0.53 0.06 25.30 3.66
Bs2 40-80 4.36 3.81 0.168 4.06 21.71 0.54 0.16 0.06 0.28 0.04 22.25 2.42
Ao 0-10 4.01 3.14 0.476 7.82 21.66 5.00 1.06 0.05 0.48 3.40 26.65 18.75
AB 10-20 4.40 3.66 0.112 2.06 11.43 2.67 0.15 0.03 0.64 1.85 14.10 18.95
Bv1 20-40 4.60 3.76 0.056 1.10 9.25 2.46 0.14 0.04 0.23 2.05 11.70 20.98
Bv2 40-80 4.86 3.85 0.035 0.59 7.45 2.02 0.14 0.06 0.30 1.52 9.47 21.31
Ao 0-10 4.81 3.79 0.363 4.78 15.51 11.76 0.66 0.05 0.77 10.29 27.27 43.13
Bv1 10-20 4.94 3.84 0.111 1.45 9.03 4.25 0.22 0.04 0.64 3.35 13.28 31.99
Bv2 20-40 4.93 3.75 0.055 0.90 11.48 3.48 0.18 0.03 0.41 2.85 14.96 23.28
Bv/R 40-80 4.95 3.74 0.084 0.52 7.73 4.35 0.21 0.04 0.36 3.74 12.07 36.00
Ao 0-10 3.50 2.83 0.806 10.60 46.47 7.20 1.24 0.09 0.50 5.38 53.67 13.42
Bv 10-20 4.40 3.60 0.334 3.60 18.17 2.10 0.28 0.05 0.68 1.10 20.28 10.37
Bv/R 20-40 5.49 4.49 0.168 1.70 8.00 10.16 0.48 0.04 0.34 9.31 18.16 55.96
Ao 0-10 3.93 3.22 0.445 4.89 23.51 1.68 0.47 0.05 0.62 0.55 25.19 6.69
Bv1 0-20 4.58 3.84 0.139 2.36 13.17 0.70 0.15 0.03 0.44 0.08 13.87 5.06
Bv2 20-40 4.57 3.87 0.084 1.12 8.81 0.46 0.15 0.03 0.10 0.17 9.27 4.93
Bv3 40-80 5.37 4.16 0.028 0.50 7.51 4.29 0.22 0.04 0.09 3.94 11.80 36.37
Ao 0-10 4.73 3.65 0.529 5.06 19.42 7.57 0.57 0.04 0.69 6.28 26.99 28.04
Bv1 10-20 4.66 3.68 0.250 3.26 16.38 4.02 0.27 0.04 0.70 3.01 20.40 19.72
Bv2 20-40 5.18 4.01 0.140 1.20 12.13 3.83 0.38 0.03 0.63 2.78 15.97 24.00
Mg
Ca
T
V
Figure 2. The depth variation of pH
The results have shown that the mountain forest
soils are strongly acidic, with a pH between
2.5–4.5 in saline extract
Figure 3. The depth variation of organic carbon
The largest amounts of organic carbon is in the
top 20 cm of mineral horizons, due to more
abundant crop residues and lignin rich in
organic carbon decreases with depth.
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