Table 2.

Main characteristics of the superficial soils – averaged between 5 cm and 40 cm deep – at the two sampling sites

Sampling site	Thouzon	Nozeyrolles
Clay (<2 µm)	129	127
Fine silt (2–20 µm)	299	117
Coarse silt (20–50 µm)	157	54
Fine sand (50–200 µm)	243	111
Coarse sand (200–2000 µm)	173	592
pH (water)	8.9	6.7
Carbon	16.6	13.0
Nitrogen	1.46	0.865
Total organic matter	28.6	22.5

Values are given in g kg^–1, with the exception of pH.

Masses are given on a dry matter basis.