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A framework for modelling soil structure dynamics induced by biological activity

Meurer, Katharina and Barron, Jennie and Chenu, Claire and Coucheney, Elsa and Hallett, Paul and Herrmann, Anke and Keller, Thomas and Koestel, John and Larsbo, Mats and Lewan, Elisabet and Or, Dani and Parsons, David and Parvin, Nargish and Taylor, Astrid and Vereecken, Harry and Jarvis, Nicholas (2020). A framework for modelling soil structure dynamics induced by biological activity. Global Change Biology. 26 , 5382-5403
[Research article]

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Abstract

Soil degradation is a worsening global phenomenon driven by socio-economic pressures, poor land management practices and climate change. A deterioration of soil structure at timescales ranging from seconds to centuries is implicated in most forms of soil degradation including the depletion of nutrients and organic matter, erosion and compaction. New soil-crop models that could account for soil structure dynamics at decadal to centennial timescales would provide insights into the relative importance of the various underlying physical (e.g. tillage, traffic compaction, swell/shrink and freeze/thaw) and biological (e.g. plant root growth, soil microbial and faunal activity) mechanisms, their impacts on soil hydrological processes and plant growth, as well as the relevant timescales of soil degradation and recovery. However, the development of such a model remains a challenge due to the enormous complexity of the interactions in the soil-plant system. In this paper, we focus on the impacts of biological processes on soil structure dynamics, especially the growth of plant roots and the activity of soil fauna and microorganisms. We first define what we mean by soil structure and then review current understanding of how these biological agents impact soil structure. We then develop a new framework for modelling soil structure dynamics, which is designed to be compatible with soil-crop models that operate at the soil profile scale and for long temporal scales (i.e. decades, centuries). We illustrate the modelling concept with a case study on the role of root growth and earthworm bioturbation in restoring the structure of a severely compacted soil.

Authors/Creators:Meurer, Katharina and Barron, Jennie and Chenu, Claire and Coucheney, Elsa and Hallett, Paul and Herrmann, Anke and Keller, Thomas and Koestel, John and Larsbo, Mats and Lewan, Elisabet and Or, Dani and Parsons, David and Parvin, Nargish and Taylor, Astrid and Vereecken, Harry and Jarvis, Nicholas
Title:A framework for modelling soil structure dynamics induced by biological activity
Series Name/Journal:Global Change Biology
Year of publishing :2020
Volume:26
Page range:5382-5403
Number of Pages:22
Publisher:WILEY
ISSN:1354-1013
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
Keywords:biological processes, degradation, dynamics, modelling, soil, structure
URN:NBN:urn:nbn:se:slu:epsilon-p-107789
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-107789
Additional ID:
Type of IDID
DOI10.1111/gcb.15289
Web of Science (WoS)000561763400001
ID Code:22129
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment

(NL, NJ) > Dept. of Agricultural Research for Northern Sweden
(VH) > Dept. of Agricultural Research for Northern Sweden

(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:05 Feb 2021 08:19
Metadata Last Modified:05 Feb 2021 08:21

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