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The soil is thin layer covering the Earth’s crust, in contact with the atmosphere: its nature and composition depend on an equilibrium between environmental factors of a chemical, physical and biological nature. It represents an important natural resource because it allows the growth of spontaneous vegetation and as a consequence an environment that is rich and varied, where many forms of life live, mainly micro-organisms and insects. Here, thanks to the presence of microflora and microfauna,  the nitrogen, carbon and phosphorus cycles are completed. These are fundamental for all living beings. The soil is also a source of  nourishment because it allows the growth of agricultural crops and animal farming, furthermore it provides wood that is used by a part of the world population as fuel.

subjects dealt with in Soil

Soil knowledge

The soil consists of a mixture of solid particles, water and air. Solid particles can be inorganic or organic. The…

Soil formation

Soil formation is the result of long processes (paedogenesis) that are generally based on the alteration (that is change) of…

Soil classification

Soil thickness depends on soil inclination. If the land is inclined rock debris do not accumulate on the spot since,…

Soil biology

Soil is the ‘place’ where materials essential for ecological equilibrium are formed and decompose, but it is also where our…

Environment and territory

The soil is a dynamic system that has reached a balance with the other surrounding elements. Man can compromise it…

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from the Multimedia section

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    Agricolture

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    Sustainable Farming

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    Soil pedogenesis

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    A telephone with a thread

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    Tillable land in the world

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    Human activity and soil

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curiosities

 
 
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