Humus content of soil

Humus content in soils fluctuating in broad range.

On humus content have influence the following factors:

Humus content in accumulation horizons of the main soil units in Poland (Turski 1996)

Division and orderType,genera and kindHumus content
%
Calcisols : Calcarious Rendzinas
3.4

2.1 - 6.3
Jurasic Rendzinas
4.4

1.5 - 7.0
PhaeozemsHaplic Phaeozems
2.8

1.8 - 4.0
Cambisols : Brown soils formed from sands
1.5

0.9 - 2.2
Brown soils formed from light and medium loams
1.8

1.1 - 3.0
Brown soils formed from heavy loam
2.5

1.6 - 3.7
Brown soils formed from silt formations
1.7

1.3 - 1.9
Brown soils formed from loess and loesslike materials
1.9

1.4 - 2.6
Luvisols : Grey brown soils formed from silt formations
1.9

1.4 - 2.4
Grey brown soils formed from loess and loesslike materials
1.8

1.0 - 2.5
Grey brown soils formed from light loam
1.6

1.0 - 2.6
PodzolsPodzolic soil formed from sands
1.5

1.1 - 2.0
Gleysols : Boggy soils formed from silts
1.6

1.2 - 2.1
Gleysols : Black earth formed from sands
2.8

1.2 - 4.1
Black earth formed from light and medium loams
2.6

1.2 - 5.7
Black earth formed from heavy loams and clays
4.9

2.5 - 5.6
Fluvisols : Alluvial soils formed from sands
2.9

1.5 - 5.2
Alluvial soils formed from silts
3.5

1.7 - 5.8
Alluvial soils formed from clays
4.2

2.4 - 6.8


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