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 soil-plant 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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dig-cirad-fr-5832532024-01-29T00:00:00Z http://agritrop.cirad.fr/583253/ http://agritrop.cirad.fr/583253/ Modelling the interactions between root system architecture, root functions and reactive transport processes in soil. Gérard Frédéric, Blitz-Frayret Céline, Hinsinger Philippe, Pagès Loïc. 2017. Plant and Soil, 413 (1) : 161-180.https://doi.org/10.1007/s11104-016-3092-x <https://doi.org/10.1007/s11104-016-3092-x> Modelling the interactions between root system architecture, root functions and reactive transport processes in soil Gérard, Frédéric Blitz-Frayret, Céline Hinsinger, Philippe Pagès, Loïc eng 2017 Plant and Soil F61 - Physiologie végétale - Nutrition F62 - Physiologie végétale - Croissance et développement P33 - Chimie et physique du sol U10 - Informatique, mathématiques et statistiques système racinaire enracinement racine morphologie végétale anatomie végétale croissance transport des substances nutritives teneur en éléments minéraux rhizosphère nutrition des plantes propriété physicochimique du sol alcalinité phosphore http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_6651 http://aims.fao.org/aos/agrovoc/c_13434 http://aims.fao.org/aos/agrovoc/c_5954 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_5272 http://aims.fao.org/aos/agrovoc/c_4848 http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_16379 http://aims.fao.org/aos/agrovoc/c_7182 http://aims.fao.org/aos/agrovoc/c_8721 http://aims.fao.org/aos/agrovoc/c_5804 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 soil-plant 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. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/583253/7/art%253A10.1007%252Fs11104-016-3092-x.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1007/s11104-016-3092-x 10.1007/s11104-016-3092-x info:eu-repo/semantics/altIdentifier/doi/10.1007/s11104-016-3092-x info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1007/s11104-016-3092-x |
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F61 - Physiologie végétale - Nutrition F62 - Physiologie végétale - Croissance et développement P33 - Chimie et physique du sol U10 - Informatique, mathématiques et statistiques système racinaire enracinement racine morphologie végétale anatomie végétale croissance transport des substances nutritives teneur en éléments minéraux rhizosphère nutrition des plantes propriété physicochimique du sol alcalinité phosphore http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_6651 http://aims.fao.org/aos/agrovoc/c_13434 http://aims.fao.org/aos/agrovoc/c_5954 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_5272 http://aims.fao.org/aos/agrovoc/c_4848 http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_16379 http://aims.fao.org/aos/agrovoc/c_7182 http://aims.fao.org/aos/agrovoc/c_8721 http://aims.fao.org/aos/agrovoc/c_5804 F61 - Physiologie végétale - Nutrition F62 - Physiologie végétale - Croissance et développement P33 - Chimie et physique du sol U10 - Informatique, mathématiques et statistiques système racinaire enracinement racine morphologie végétale anatomie végétale croissance transport des substances nutritives teneur en éléments minéraux rhizosphère nutrition des plantes propriété physicochimique du sol alcalinité phosphore http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_6651 http://aims.fao.org/aos/agrovoc/c_13434 http://aims.fao.org/aos/agrovoc/c_5954 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_5272 http://aims.fao.org/aos/agrovoc/c_4848 http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_16379 http://aims.fao.org/aos/agrovoc/c_7182 http://aims.fao.org/aos/agrovoc/c_8721 http://aims.fao.org/aos/agrovoc/c_5804 |
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F61 - Physiologie végétale - Nutrition F62 - Physiologie végétale - Croissance et développement P33 - Chimie et physique du sol U10 - Informatique, mathématiques et statistiques système racinaire enracinement racine morphologie végétale anatomie végétale croissance transport des substances nutritives teneur en éléments minéraux rhizosphère nutrition des plantes propriété physicochimique du sol alcalinité phosphore http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_6651 http://aims.fao.org/aos/agrovoc/c_13434 http://aims.fao.org/aos/agrovoc/c_5954 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_5272 http://aims.fao.org/aos/agrovoc/c_4848 http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_16379 http://aims.fao.org/aos/agrovoc/c_7182 http://aims.fao.org/aos/agrovoc/c_8721 http://aims.fao.org/aos/agrovoc/c_5804 F61 - Physiologie végétale - Nutrition F62 - Physiologie végétale - Croissance et développement P33 - Chimie et physique du sol U10 - Informatique, mathématiques et statistiques système racinaire enracinement racine morphologie végétale anatomie végétale croissance transport des substances nutritives teneur en éléments minéraux rhizosphère nutrition des plantes propriété physicochimique du sol alcalinité phosphore http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_6651 http://aims.fao.org/aos/agrovoc/c_13434 http://aims.fao.org/aos/agrovoc/c_5954 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_5272 http://aims.fao.org/aos/agrovoc/c_4848 http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_16379 http://aims.fao.org/aos/agrovoc/c_7182 http://aims.fao.org/aos/agrovoc/c_8721 http://aims.fao.org/aos/agrovoc/c_5804 Gérard, Frédéric Blitz-Frayret, Céline Hinsinger, Philippe Pagès, Loïc Modelling the interactions between root system architecture, root functions and reactive transport processes in soil |
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 soil-plant 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. |
format |
article |
topic_facet |
F61 - Physiologie végétale - Nutrition F62 - Physiologie végétale - Croissance et développement P33 - Chimie et physique du sol U10 - Informatique, mathématiques et statistiques système racinaire enracinement racine morphologie végétale anatomie végétale croissance transport des substances nutritives teneur en éléments minéraux rhizosphère nutrition des plantes propriété physicochimique du sol alcalinité phosphore http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_6651 http://aims.fao.org/aos/agrovoc/c_13434 http://aims.fao.org/aos/agrovoc/c_5954 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_5272 http://aims.fao.org/aos/agrovoc/c_4848 http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_16379 http://aims.fao.org/aos/agrovoc/c_7182 http://aims.fao.org/aos/agrovoc/c_8721 http://aims.fao.org/aos/agrovoc/c_5804 |
author |
Gérard, Frédéric Blitz-Frayret, Céline Hinsinger, Philippe Pagès, Loïc |
author_facet |
Gérard, Frédéric Blitz-Frayret, Céline Hinsinger, Philippe Pagès, Loïc |
author_sort |
Gérard, Frédéric |
title |
Modelling the interactions between root system architecture, root functions and reactive transport processes in soil |
title_short |
Modelling the interactions between root system architecture, root functions and reactive transport processes in soil |
title_full |
Modelling the interactions between root system architecture, root functions and reactive transport processes in soil |
title_fullStr |
Modelling the interactions between root system architecture, root functions and reactive transport processes in soil |
title_full_unstemmed |
Modelling the interactions between root system architecture, root functions and reactive transport processes in soil |
title_sort |
modelling the interactions between root system architecture, root functions and reactive transport processes in soil |
url |
http://agritrop.cirad.fr/583253/ http://agritrop.cirad.fr/583253/7/art%253A10.1007%252Fs11104-016-3092-x.pdf |
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