This vertical distribution pattern can be explained by chemical eluviation
due to water flow in the soil profile.
This result is related to the Ordovician surface uplift, the overall open environment, meteoric water eluviation
(Land, 1980; Rosen et al.
With increasing soil acidity and stages of eluviation
and gleyification, the accumulation of non-decomposed organic matter constituting the forest floor (exogenous organic carbon) increases considerably.
No evidence of eluviation
was found yet in our sites.
In addition, bagasse charcoal use increased N absorption for sugarcane and N accumulation in the soil, along with decreased N eluviation
A horizon adsorption aggregate anion B horizon C horizon cation cation exchange capacity composite sample compost E horizon eluviation
hardpan horizon O horizon organic matter parent material ped R horizon soil profile soil structure soil texture subsoil tilth topsoil
minerals and humus into topsoil; "E horizon," for eluviation
What is the difference between eluviation
In the topsoil moder changes into raw humus (Orm) and in the sour A-horizon As eluviation
begins by podzolization: AsEp (not so clearly visible in the photo).
On the mountain sides, gradual deforestation resulted in the eluviation
of parts of the area and favoured the growth of more or less dry grassland communities such as Koelerio-Brometum (on steep slopes) or PotentilloBrachypodietum (on less steep slopes).
E The E horizon, the zone of greatest eluviation
, is very leached of clay, chemicals, and organic matter.
Savannahs with members of the Combretaceae (Terminalia, Combretum, Anogeissus) grow on mesotrophic soils, where eluviation
and illuviation are not so strong.