Université de Neuchâtel

Coupling X-ray computed tomography and freeze-coring for the analysis of fine-grained low-cohesive soils

Liernur, Adrien ; Schomburg, Andreas ; Turberg, Pascal ; Guenat, Claire ; Le Bayon, Renée-Claire ; Brunner, Philip

In: Geoderma, 2017, vol. 308, p. 171-186

This paper presents the coupling of freeze-core sampling with X-ray CT scanning for the analysis of the soil structure of fine-grained, low-cohesive soils. We used a medical scanner to image the 3D soil structure of the frozen soil cores, providing X-ray CT data at a millimetric resolution over freeze-cores that are up to 62.5 cm long and 25 cm wide. The obtained data and the changes in gray...

Accès public à partir du 1 nov. 2018
Université de Neuchâtel

Rock-Eval pyrolysis discriminates soil macro-aggregates formed by plants and earthworms

Schomburg, Andreas ; Verrecchia, Eric P ; Guenat, Claire ; Brunner, Philip ; Sebag, David ; Le Bayon, Renée Claire

In: Soil Biology & Biochemistry, 2018, vol. 117, p. 117-124

Plants and earthworms, as soil ecosystem engineers, play a crucial role during stabilisation of organic matter in soil through its incorporation into soil aggregates. It is therefore essential to better understand the mechanisms and interactions of soil engineering organisms regarding soil organic matter stabilisation. Several methods have already been successfully applied to differentiate soil...