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Modelling the interactions between root system architecture, root functions and reactive transport processes in soil

Background and aims Soil-plant models always oversimplified the representation of soil chemical processes or root system. The objectives of the study were (i) to present a model overcoming such limitations, and (ii) to illustrate its relevance for the modelling of soilplant interactions. Methods We... Full description

Journal Title: Plant and soil 2017, Vol.413 (1/2), p.161-180
Main Author: Gérard, Frédéric
Other Authors: Blitz-Frayret, Céline , Hinsinger, Philippe , Pagès, Loïc
Format: Electronic Article Electronic Article
Language: English
Subjects:
aos
fao
org
pH
Publisher: Cham: Springer
ID: ISSN: 0032-079X
Link: https://hal.archives-ouvertes.fr/hal-01521534
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recordid: cdi_hal_primary_oai_HAL_hal_01521534v1
title: Modelling the interactions between root system architecture, root functions and reactive transport processes in soil
format: Article
creator:
  • Gérard, Frédéric
  • Blitz-Frayret, Céline
  • Hinsinger, Philippe
  • Pagès, Loïc
subjects:
  • Agricultural sciences
  • agrovoc
  • aims
  • Alcalinité
  • alkaline soil
  • Anatomie végétale
  • aos
  • ArchiSimple
  • Biomedical and Life Sciences
  • c_13434
  • c_16034
  • c_16379
  • c_3394
  • c_4848
  • c_5272
  • c_5804
  • c_5954
  • c_6569
  • c_6649
  • c_6651
  • c_7182
  • c_8721
  • Chemistry
  • Chimie et physique du sol
  • Croissance
  • croissance et développement
  • Ecology
  • Enracinement
  • Environmental aspects
  • fao
  • http
  • hydroxylapatite
  • Life Sciences
  • min3p
  • modélisation architecturale
  • Morphologie végétale
  • Méthodes mathématiques et statistiques
  • Nutrition
  • Nutrition des plantes
  • nutrition végétale
  • org
  • pH
  • phosphore
  • Phosphorus
  • Physiologie végétale
  • Plant nutrition
  • Plant Physiology
  • Plant Sciences
  • Plant-soil relationships
  • Propriété physicochimique du sol
  • Racine
  • Regular Article
  • rhizosphère
  • root systems
  • Soil Science & Conservation
  • Soils
  • sol alcalin
  • système racinaire
  • Teneur en éléments minéraux
  • Transport des substances nutritives
ispartof: Plant and soil, 2017, Vol.413 (1/2), p.161-180
description: Background and aims Soil-plant models always oversimplified the representation of soil chemical processes or root system. The objectives of the study were (i) to present a model overcoming such limitations, and (ii) to illustrate its relevance for the modelling of soilplant interactions. Methods We coupled a root system architecture (RSA) model with a reactive transport model using a macroscopic approach. The two models were coupled sequentially using Fortran-C++ interoperability. We used the resulting model to investigate the case of phosphorus (P) acquisition from hydroxyapatite (HA) in an alkaline soil as induced by P and calcium (Ca) uptake and pH variations in the root zone. Important model parameters were issued of the literature and we tested its sensitivity to selected soil properties. Model sensitivity to grid size and time increment was evaluated as well. Results The simulations revealed that HA dissolution can contribute very substantially to P nutrition in case of rhizosphere alkalisation thanks to Ca and P uptake. Root-induced acidification was much more efficient at acquiring P, suggesting that ammonium-fed plants should be more P efficient. The variations of dissolved P in the root zone partly agreed with the observations, suggesting that P release was rather controlled by desorption when alkalisation occurs. The presence of more soluble minerals as well as the increase of Ca uptake should enhance P acquisition by crops. Conclusion We developed a new model and demonstrated the interest of the mechanistic description of geochemical processes with a spatially-explicit distribution of roots in soil while modelling soil-plant interactions. Results of its first application to P acquisition from a mineral source in an alkaline soil were overall consistent with the literature.
language: eng
source:
identifier: ISSN: 0032-079X
fulltext: no_fulltext
issn:
  • 0032-079X
  • 1573-5036
url: Link


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titleModelling the interactions between root system architecture, root functions and reactive transport processes in soil
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descriptionBackground and aims Soil-plant models always oversimplified the representation of soil chemical processes or root system. The objectives of the study were (i) to present a model overcoming such limitations, and (ii) to illustrate its relevance for the modelling of soilplant interactions. Methods We coupled a root system architecture (RSA) model with a reactive transport model using a macroscopic approach. The two models were coupled sequentially using Fortran-C++ interoperability. We used the resulting model to investigate the case of phosphorus (P) acquisition from hydroxyapatite (HA) in an alkaline soil as induced by P and calcium (Ca) uptake and pH variations in the root zone. Important model parameters were issued of the literature and we tested its sensitivity to selected soil properties. Model sensitivity to grid size and time increment was evaluated as well. Results The simulations revealed that HA dissolution can contribute very substantially to P nutrition in case of rhizosphere alkalisation thanks to Ca and P uptake. Root-induced acidification was much more efficient at acquiring P, suggesting that ammonium-fed plants should be more P efficient. The variations of dissolved P in the root zone partly agreed with the observations, suggesting that P release was rather controlled by desorption when alkalisation occurs. The presence of more soluble minerals as well as the increase of Ca uptake should enhance P acquisition by crops. Conclusion We developed a new model and demonstrated the interest of the mechanistic description of geochemical processes with a spatially-explicit distribution of roots in soil while modelling soil-plant interactions. Results of its first application to P acquisition from a mineral source in an alkaline soil were overall consistent with the literature.
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subjectAgricultural sciences ; agrovoc ; aims ; Alcalinité ; alkaline soil ; Anatomie végétale ; aos ; ArchiSimple ; Biomedical and Life Sciences ; c_13434 ; c_16034 ; c_16379 ; c_3394 ; c_4848 ; c_5272 ; c_5804 ; c_5954 ; c_6569 ; c_6649 ; c_6651 ; c_7182 ; c_8721 ; Chemistry ; Chimie et physique du sol ; Croissance ; croissance et développement ; Ecology ; Enracinement ; Environmental aspects ; fao ; http ; hydroxylapatite ; Life Sciences ; min3p ; modélisation architecturale ; Morphologie végétale ; Méthodes mathématiques et statistiques ; Nutrition ; Nutrition des plantes ; nutrition végétale ; org ; pH ; phosphore ; Phosphorus ; Physiologie végétale ; Plant nutrition ; Plant Physiology ; Plant Sciences ; Plant-soil relationships ; Propriété physicochimique du sol ; Racine ; Regular Article ; rhizosphère ; root systems ; Soil Science & Conservation ; Soils ; sol alcalin ; système racinaire ; Teneur en éléments minéraux ; Transport des substances nutritives
ispartofPlant and soil, 2017, Vol.413 (1/2), p.161-180
rights
0Springer Science+Business Media 2017
1Springer International Publishing Switzerland 2016
2COPYRIGHT 2017 Springer
3Plant and Soil is a copyright of Springer, 2017.
4Distributed under a Creative Commons Attribution 4.0 International License
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descriptionBackground and aims Soil-plant models always oversimplified the representation of soil chemical processes or root system. The objectives of the study were (i) to present a model overcoming such limitations, and (ii) to illustrate its relevance for the modelling of soilplant interactions. Methods We coupled a root system architecture (RSA) model with a reactive transport model using a macroscopic approach. The two models were coupled sequentially using Fortran-C++ interoperability. We used the resulting model to investigate the case of phosphorus (P) acquisition from hydroxyapatite (HA) in an alkaline soil as induced by P and calcium (Ca) uptake and pH variations in the root zone. Important model parameters were issued of the literature and we tested its sensitivity to selected soil properties. Model sensitivity to grid size and time increment was evaluated as well. Results The simulations revealed that HA dissolution can contribute very substantially to P nutrition in case of rhizosphere alkalisation thanks to Ca and P uptake. Root-induced acidification was much more efficient at acquiring P, suggesting that ammonium-fed plants should be more P efficient. The variations of dissolved P in the root zone partly agreed with the observations, suggesting that P release was rather controlled by desorption when alkalisation occurs. The presence of more soluble minerals as well as the increase of Ca uptake should enhance P acquisition by crops. Conclusion We developed a new model and demonstrated the interest of the mechanistic description of geochemical processes with a spatially-explicit distribution of roots in soil while modelling soil-plant interactions. Results of its first application to P acquisition from a mineral source in an alkaline soil were overall consistent with the literature.
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24Croissance
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26Ecology
27Enracinement
28Environmental aspects
29fao
30http
31hydroxylapatite
32Life Sciences
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36Méthodes mathématiques et statistiques
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44Physiologie végétale
45Plant nutrition
46Plant Physiology
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53root systems
54Soil Science & Conservation
55Soils
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57système racinaire
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59Transport des substances nutritives
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abstractBackground and aims Soil-plant models always oversimplified the representation of soil chemical processes or root system. The objectives of the study were (i) to present a model overcoming such limitations, and (ii) to illustrate its relevance for the modelling of soilplant interactions. Methods We coupled a root system architecture (RSA) model with a reactive transport model using a macroscopic approach. The two models were coupled sequentially using Fortran-C++ interoperability. We used the resulting model to investigate the case of phosphorus (P) acquisition from hydroxyapatite (HA) in an alkaline soil as induced by P and calcium (Ca) uptake and pH variations in the root zone. Important model parameters were issued of the literature and we tested its sensitivity to selected soil properties. Model sensitivity to grid size and time increment was evaluated as well. Results The simulations revealed that HA dissolution can contribute very substantially to P nutrition in case of rhizosphere alkalisation thanks to Ca and P uptake. Root-induced acidification was much more efficient at acquiring P, suggesting that ammonium-fed plants should be more P efficient. The variations of dissolved P in the root zone partly agreed with the observations, suggesting that P release was rather controlled by desorption when alkalisation occurs. The presence of more soluble minerals as well as the increase of Ca uptake should enhance P acquisition by crops. Conclusion We developed a new model and demonstrated the interest of the mechanistic description of geochemical processes with a spatially-explicit distribution of roots in soil while modelling soil-plant interactions. Results of its first application to P acquisition from a mineral source in an alkaline soil were overall consistent with the literature.
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