Using micro-organisms to assess the biological quality of soils
New meta-omics techniques for diagnosis of soil microbial quality
Quizzed article REF: GE1052 V1
Using micro-organisms to assess the biological quality of soils
New meta-omics techniques for diagnosis of soil microbial quality

Authors : Christophe DJEMIEL, Sébastien TERRAT

Publication date: October 10, 2019 | Lire en français

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1. Using micro-organisms to assess the biological quality of soils

1.1 Definition of the soil matrix

Soil is the most superficial layer of the earth's crust, ranging in thickness from a few centimetres to several dozen metres, and is both highly heterogeneous and highly structured. Soil is also home to numerous organisms that spend part or all of their life cycle underground, forming part of the soil biota.

The soil matrix

It is very difficult to give a single definition of soil. The Larousse dictionary gives this general definition: "surface layer of the earth's crust considered in terms of its nature or productive qualities", and a pedological definition: "natural, loose surface formation resulting from the transformation, in contact with the atmosphere, of the underlying parent...

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