X‐ray tomography analysis of soil biopores structure under wetting and drying cycles
| Autor: | Yvan Capowiez, Jean-Luc Maeght, Nicolas Bottinelli, Sougueh Cheik, T.M. Tran, Pascal Jouquet |
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| Přispěvatelé: | Soils and Fertilizers Research Institute (SFRI), Vietnam Academy of Agricultural Sciences (VAAS), Institut d'écologie et des sciences de l'environnement de Paris (iEES Paris ), Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes (EMMAH), Avignon Université (AU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Cracks
Water flow Soil biology Soil porosity Soil Science Soil science 010501 environmental sciences [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy 01 natural sciences Rainwater harvesting [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems Galleries 0105 earth and related environmental sciences Macropore 04 agricultural and veterinary sciences 15. Life on land [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics X‐ray tomography Volume (thermodynamics) Percolation 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Wetting [SDE.BE]Environmental Sciences/Biodiversity and Ecology Bioturbation Wetting‐drying cycles |
| Zdroj: | European Journal of Soil Science European Journal of Soil Science, Wiley, 2021, 72 (5), pp.2128-2132. ⟨10.1111/ejss.13119⟩ |
| ISSN: | 1351-0754 1365-2389 |
| Popis: | International audience; Soil macroporosity is a highly dynamic feature driven by numerous physical and biological processes, of which bioturbation, the movement of water in soil and swelling and shrinking cycles are the main processes. To date, the interaction between these factors, especially how galleries produced by soil fauna respond to rainwater percolation and wetting-drying (WD) cycles, remains poorly known. A laboratory experiment was carried out to expose soil macrofauna galleries to 3 different consecutive water flow (simulated rain event of 50, 80 and 110 mm h-1 in one hour) and drying cycles in a clayey soil. X-ray computed tomography and image analyses were used prior and after each exposure to assess the water stabilities of galleries and created cracks. The 3D properties (volume, diameter, specific surface area and density) of the galleries produced by termites or ants were not statistically influenced by rainwater percolation and WD cycles, suggesting a high water stability and life expectancy under natural conditions. Conversely, the crack water stability was variable and was probably influenced by the presence of galleries in the same area. This study emphasizes that the macropores created by soil fauna may persist in clayey soil and that there is a need to better understand how cracks and galleries interact. |
| Databáze: | OpenAIRE |
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