|
|
|
Land Management & Natural
Hazards Unit |
SOIL |
|
|
|
Soil
Atlas of |
|||||
The soil of Europe
|
An Acrisol is a highly weathered soil occurring
in warm temperate regions and the wetter parts of the tropics and subtropics.
Acrisols have poor chemical properties, low levels
of plant nutrients, high levels of aluminium and
high susceptibility to erosion. These conditions are strong limitations for
agricultural use. Acrisols are similar to the
Red-Yellow Podzolic soil of
|
Albeluvisols have an accumulation of clay in the
subsoil with an irregular or broken upper boundary and deep penetrations or
"tonguing" of bleached soil material into the illuviation
horizon. The typical "albeluvic tongues"
are generally the result of freeze-thaw processes in periglacial
conditions and often show a polygonal network in horizontal cuts. Albeluvisols occur mainly in the moist and cool temperate
regions. Also known as Podzoluvisols (FAO), Ortho-podzolic soil (
|
|
|
Most Andosols are formed from volcanic ejecta (ash, pumice, cinder) and related parent materials. The rapid chemical weathering of porous, permeable, fine-grained mineral material, in the presence of organic matter, generally results in the rapid development of soil profiles. The dark topsoil is generally different in colour from subsoil. Andosols occur throughout the world where volcanic activity is common. Other international names are Andisols (Soil Taxonomy), Vitrisols (France) and volcanic ash soil.
|
An Anthrosol is a soil that was formed or
significantly modified through human activities ranging from long-term deep
cultivation (e.g. terraces), substantial additions of mineral and organic
fertilizers, continuous application of earth (e.g. sods, shells), irrigation
and substantial additions of sediment to wet cultivation involving puddling of the surface soil. The
morphological and chemical characteristics of this soil vary depending on the
specific human activity. Anthrosols are also known
as Plaggen soil, Paddy soil, Oasis soil and Terra Preta do
On a continental scale, it is the dominant soil in less
than 0.1 % of |
|
