A soil-plant-atmosphere continuum (SPAC) model for simulating tree transpiration with a soil multi-compartment solution
[Aims] A soil-plant-atmosphere continuum (SPAC) model for simulating tree transpiration (Ep) with variable water stress and water distribution in the soil is presented. The model couples a sun/shade approach for the canopy with a discrete representation of the soil in different layers and compartments.
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| Format: | artículo biblioteca |
| Language: | English |
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Springer Nature
2017-03
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| Subjects: | Drought, SPAC, Stomatal conductance, Root water uptake, |
| Online Access: | http://hdl.handle.net/10261/166494 http://dx.doi.org/10.13039/501100003339 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 |
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dig-ias-es-10261-1664942018-08-03T10:14:37Z A soil-plant-atmosphere continuum (SPAC) model for simulating tree transpiration with a soil multi-compartment solution García-Tejera, Omar López-Bernal, Álvaro Testi, Luca Villalobos, Francisco J. Ministerio de Economía y Competitividad (España) European Commission Consejo Superior de Investigaciones Científicas (España) Drought SPAC Stomatal conductance Root water uptake [Aims] A soil-plant-atmosphere continuum (SPAC) model for simulating tree transpiration (Ep) with variable water stress and water distribution in the soil is presented. The model couples a sun/shade approach for the canopy with a discrete representation of the soil in different layers and compartments. [Methods] To test its performance, the outputs from the simulations are compared to those from an experiment using trees of olive ‘Picual’ and almond ‘Marinada’ with the root system split into two. Trees are subjected to different irrigation phases in which one side of the root system is dried out while the other is kept wet. [Results] The model is able to accurately predict Ep (R2 and the efficiency factor (EF) around 0.9) in the two species studied. The use of a function that modulates the uptake capacity of a root according to the soil water content was necessary to track the fluxes observed from each split part. It was also appropriate to account for root clumping to match the measured and modelled leaf water potential. [Conclusions] Coupling the sun/shade approach with the soil multi-compartment solution provides a useful tool to explore tree Ep for different degrees of water availability and distribution. This work was supported by project AGL-2010-20766 of the Spanish Ministry of Economy and Competitiveness (former Ministry of Science and Innovation) and by the European Community’s Seven Framework Programme-FP7 (KBBE.2013.1.4-09) under Grant Agreement No. 613817 (MODEXTREME, modextreme.org). The authors wish to thank both the “FPI” programme of the aforementioned ministry and the JAE programme of the Spanish Research Council (CSIC) for providing the Ph.D. scholarships granted to the first and the second author, respectively. Peer reviewed 2018-06-18T09:53:48Z 2018-06-18T09:53:48Z 2017-03 artículo http://purl.org/coar/resource_type/c_6501 Plant and Soil 412(1-2): 215-233 (2017) 0032-079X http://hdl.handle.net/10261/166494 10.1007/s11104-016-3049-0 1573-5036 http://dx.doi.org/10.13039/501100003339 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/613817 http://dx.doi.org/10.1007/s11104-016-3049-0 Sí none Springer Nature |
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Drought SPAC Stomatal conductance Root water uptake Drought SPAC Stomatal conductance Root water uptake |
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Drought SPAC Stomatal conductance Root water uptake Drought SPAC Stomatal conductance Root water uptake García-Tejera, Omar López-Bernal, Álvaro Testi, Luca Villalobos, Francisco J. A soil-plant-atmosphere continuum (SPAC) model for simulating tree transpiration with a soil multi-compartment solution |
| description |
[Aims] A soil-plant-atmosphere continuum (SPAC) model for simulating tree transpiration (Ep) with variable water stress and water distribution in the soil is presented. The model couples a sun/shade approach for the canopy with a discrete representation of the soil in different layers and compartments. |
| author2 |
Ministerio de Economía y Competitividad (España) |
| author_facet |
Ministerio de Economía y Competitividad (España) García-Tejera, Omar López-Bernal, Álvaro Testi, Luca Villalobos, Francisco J. |
| format |
artículo |
| topic_facet |
Drought SPAC Stomatal conductance Root water uptake |
| author |
García-Tejera, Omar López-Bernal, Álvaro Testi, Luca Villalobos, Francisco J. |
| author_sort |
García-Tejera, Omar |
| title |
A soil-plant-atmosphere continuum (SPAC) model for simulating tree transpiration with a soil multi-compartment solution |
| title_short |
A soil-plant-atmosphere continuum (SPAC) model for simulating tree transpiration with a soil multi-compartment solution |
| title_full |
A soil-plant-atmosphere continuum (SPAC) model for simulating tree transpiration with a soil multi-compartment solution |
| title_fullStr |
A soil-plant-atmosphere continuum (SPAC) model for simulating tree transpiration with a soil multi-compartment solution |
| title_full_unstemmed |
A soil-plant-atmosphere continuum (SPAC) model for simulating tree transpiration with a soil multi-compartment solution |
| title_sort |
soil-plant-atmosphere continuum (spac) model for simulating tree transpiration with a soil multi-compartment solution |
| publisher |
Springer Nature |
| publishDate |
2017-03 |
| url |
http://hdl.handle.net/10261/166494 http://dx.doi.org/10.13039/501100003339 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 |
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