Soil profile and soil suitability - Humus form and its classification
29 important questions on Soil profile and soil suitability - Humus form and its classification
What is the origin of OM in the ectorganic horizons?
What is the origin of OM in the endorganic horizons?
Peat layers are also considered endorganic horizons.
Which horizon is first mentioned when there are multiple horizons mixed together?
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What are the ectorganic horizons?
2. F
3. H
4. Layer of living peat moss
What are L horizons?
Fresh litter in which the entire original structures are discernible.
What is the difference between a Ln and a Lv horizon?
Lv = litter variative (decayed leaves)
What are F horizons?
Partially decomposed litter. The plant residues are fragmented and fine organic matter may be quite abundant, but the residues are stille macroscopically well recognizable.
Why are there many roots in F horizons?
What is the Fm horizon?
Decomposition largely through fungi. Schimmelnetwerken zichtbaar.
What is the Fa horizon?
If decomposition is through both mesofauna and fungi. Schimmelnetwerken en droppings.
What are H horizons?
What is the Hh horizon?
Completely humified, massive blocky structure.
What is the Hr horizon?
Fine organic matter with residues of roots, bark or wood.
What is the Hw horizon?
Many wood remnants.
What is the Hz horizon?
Fine organic mattter consists mainly of mesofauna dropping.
How are endorganic horizons formed?
When are M horizons formed?
Under what conditions do root mats form?
What is a Mf horizon?
Horizon consists largely of dead roots. Very dense root mat.
What is a Mm horizon?
Roots are partially decomposed with fine organic matter in between them.
What is a Mh horizon?
Humified root residues, in which some roots are still discernible.
What is a AMh horizon
What are O horizons?
What is an Od horizon?
They developed from oligotrophic acidic peat, composed of peat moss. They have been formed by decomposition of peat.
What is an Ah horizon?
What is an Ap horizon?
What is an Aa horizon?
What is an E horizon?
What is an Bw horizon?
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