Table 2 Density and porosity of typical black soil under different vegetation cover
Opportunities
for the
experiment
Depth of
sampling,
cm
Volumetric
weight of soils,
g/cm
3
Density of soil's
solid phase, g/cm
3
Total soils'
porosity, %
Coefficient of
porosity
Oak
5-15
1.13
2.53
55.15
1.23
25-35
1.31
2.55
48.47
0.94
40-50
1.38
2.58
46.68
0.88
75-85
1.42
2.61
45.74
0.84
102-110
1.44
2.64
45.54
0.84
Birch tree
5-15
1.29
2.57
49.87
0.99
25-35
1.34
2.58
48.00
0.92
40-50
1.40
2.59
45.94
0.85
75-85
1.46
2.61
44.26
0.79
102-110
1.49
2.64
43.69
0.78
Pine
5-15
1.31
2.58
49.16
0.97
25-35
1.33
2.61
48.85
0.96
40-50
1.39
2.63
47.21
0.89
75-85
1.42
2.64
46.15
0.86
102-110
1.45
2.65
45.45
0.83
Modrida
5-15
1.22
2.57
52.56
1.11
25-35
1.25
2.58
51.58
1.07
40-50
1.30
2.60
49.79
0.99
75-85
1.33
2.63
49.27
0.97
102-110
1.42
2.65
46.29
0.86
Glade
5-15
1.19
2.56
53.47
1.15
25-35
1.29
2.60
50.23
1.01
40-50
1.37
2.62
47.63
0.91
75-85
1.41
2.63
46.48
0.87
102-110
1.44
2.64
45.36
0.83
Fallow
5-15
1.18
2.54
53.50
1.15
25-35
1.32
2.57
48.56
0.94
40-50
1.35
2.60
48.18
0.93
75-85
1.39
2.62
47.00
0.89
102-110
1.41
2.63
46.42
0.87
Arable land
5-15
1.40
2.59
46.05
0.85
25-35
1.45
2.57
43.77
0.78
40-50
1.37
2.61
47.41
0.90
75-85
1.48
2.63
43.74
0.78
102-110
1.52
2.64
42.40
0.74
General
НСР
05
=
0.036
0.051
Options
НСР
05
=
0.014
0.019
Depth
НСР
05
=
0.016
0.023
While studying the density (volumetric weight of soils) it was established that
value of volumetric weight (density) in all soils increases down the profile: under forest
plantations it is much lower (1.13 under oak, 1.22 under larch, 1, 29 under birch, 1.31
g/cm
3
under pine) compared to arable land’s soil (1.40 g/cm
3
).
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