A relation could be observed between the length of the vertical distribution of pollen (pollen profile) and the depth above, in which the original stratification of the Eolian cover sand had entirely disappeared.
It was concluded that most of the pollen permeated before podsolisation, during the biologically very active stage of the homogeneous forest profile. The lowest part of the pollen profile, already fixed, constantly 'grew' on the top through addition of continually younger spectra; in later degradation stages illuviation of pollen could also become significant. A paucity of tree pollen in the whole spectrum could occur after various types of vegetation and after certain conditions of soil moisture.
During the Boreal, Atlantic and Fagus-Carpinus period both homogeneous forest profiles and podsolic profiles occurred under diverse vegetation. During each of these periods homogeneous forest profiles were degraded to new podsolic profiles.
|Qualification||Doctor of Philosophy|
|Award date||2 Nov 1962|
|Place of Publication||Wageningen|
|Publication status||Published - 1962|
- soil surveys
- land evaluation
- soil suitability
- soil formation
- soil science