Refined pipe theory for mechanistic modeling of wood development.
Identifieur interne : 000936 ( Main/Exploration ); précédent : 000935; suivant : 000937Refined pipe theory for mechanistic modeling of wood development.
Auteurs : Gaby Deckmyn [Belgique] ; Sam P. Evans ; Tim J. RandleSource :
- Tree physiology [ 0829-318X ] ; 2006.
English descriptors
- KwdEn :
- Computer Simulation, Fagus (anatomy & histology), Fagus (growth & development), Fagus (physiology), Models, Biological, Pinus (anatomy & histology), Pinus (growth & development), Pinus (physiology), Plant Leaves (anatomy & histology), Plant Leaves (growth & development), Plant Transpiration, Quercus (anatomy & histology), Quercus (growth & development), Quercus (physiology), Seasons, Trees (anatomy & histology), Trees (growth & development), Wood (growth & development), Wood (physiology).
- MESH :
- anatomy & histology : Fagus, Pinus, Plant Leaves, Quercus, Trees.
- growth & development : Fagus, Pinus, Plant Leaves, Quercus, Trees, Wood.
- physiology : Fagus, Pinus, Quercus, Wood.
- Computer Simulation, Models, Biological, Plant Transpiration, Seasons.
Abstract
We present a mechanistic model of wood tissue development in response to changes in competition, management and climate. The model is based on a refinement of the pipe theory, where the constant ratio between sapwood and leaf area (pipe theory) is replaced by a ratio between pipe conductivity and leaf area. Simulated pipe conductivity changes with age, stand density and climate in response to changes in allocation or pipe radius, or both. The central equation of the model, which calculates the ratio of carbon (C) allocated to leaves and pipes, can be parameterized to describe the contrasting stem conductivity behavior of different tree species: from constant stem conductivity (functional homeostasis hypothesis) to height-related reduction in stem conductivity with age (hydraulic limitation hypothesis). The model simulates the daily growth of pipes (vessels or tracheids), fibers and parenchyma as well as vessel size and simulates the wood density profile and the earlywood to latewood ratio from these data. Initial runs indicate the model yields realistic seasonal changes in pipe radius (decreasing pipe radius from spring to autumn) and wood density, as well as realistic differences associated with the competitive status of trees (denser wood in suppressed trees).
PubMed: 16510386
Affiliations:
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Le document en format XML
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Randle</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2006">2006</date><idno type="RBID">pubmed:16510386</idno><idno type="pmid">16510386</idno><idno type="wicri:Area/PubMed/Corpus">000046</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000046</idno><idno type="wicri:Area/PubMed/Curation">000046</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000046</idno><idno type="wicri:Area/PubMed/Checkpoint">000046</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000046</idno><idno type="wicri:Area/Ncbi/Merge">00028</idno><idno type="wicri:Area/Ncbi/Curation">000028</idno><idno type="wicri:Area/Ncbi/Checkpoint">000028</idno><idno type="wicri:doubleKey">0829-318X:2006:Deckmyn G:refined:pipe:theory</idno><idno type="wicri:Area/Main/Merge">000945</idno><idno type="wicri:Area/Main/Curation">000936</idno><idno type="wicri:Area/Main/Exploration">000936</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Refined pipe theory for mechanistic modeling of wood development.</title><author><name sortKey="Deckmyn, Gaby" sort="Deckmyn, Gaby" uniqKey="Deckmyn G" first="Gaby" last="Deckmyn">Gaby Deckmyn</name><affiliation wicri:level="1"><nlm:affiliation>Research Group of Plant and Vegetation Ecology, University of Antwerpen, Belgium.</nlm:affiliation><country xml:lang="fr">Belgique</country><wicri:regionArea>Research Group of Plant and Vegetation Ecology, University of Antwerpen</wicri:regionArea><wicri:noRegion>University of Antwerpen</wicri:noRegion></affiliation></author><author><name sortKey="Evans, Sam P" sort="Evans, Sam P" uniqKey="Evans S" first="Sam P" last="Evans">Sam P. Evans</name></author><author><name sortKey="Randle, Tim J" sort="Randle, Tim J" uniqKey="Randle T" first="Tim J" last="Randle">Tim J. Randle</name></author></analytic><series><title level="j">Tree physiology</title><idno type="ISSN">0829-318X</idno><imprint><date when="2006" type="published">2006</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Computer Simulation</term><term>Fagus (anatomy & histology)</term><term>Fagus (growth & development)</term><term>Fagus (physiology)</term><term>Models, Biological</term><term>Pinus (anatomy & histology)</term><term>Pinus (growth & development)</term><term>Pinus (physiology)</term><term>Plant Leaves (anatomy & histology)</term><term>Plant Leaves (growth & development)</term><term>Plant Transpiration</term><term>Quercus (anatomy & histology)</term><term>Quercus (growth & development)</term><term>Quercus (physiology)</term><term>Seasons</term><term>Trees (anatomy & histology)</term><term>Trees (growth & development)</term><term>Wood (growth & development)</term><term>Wood (physiology)</term></keywords><keywords scheme="MESH" qualifier="anatomy & histology" xml:lang="en"><term>Fagus</term><term>Pinus</term><term>Plant Leaves</term><term>Quercus</term><term>Trees</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Fagus</term><term>Pinus</term><term>Plant Leaves</term><term>Quercus</term><term>Trees</term><term>Wood</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Fagus</term><term>Pinus</term><term>Quercus</term><term>Wood</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Computer Simulation</term><term>Models, Biological</term><term>Plant Transpiration</term><term>Seasons</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We present a mechanistic model of wood tissue development in response to changes in competition, management and climate. The model is based on a refinement of the pipe theory, where the constant ratio between sapwood and leaf area (pipe theory) is replaced by a ratio between pipe conductivity and leaf area. Simulated pipe conductivity changes with age, stand density and climate in response to changes in allocation or pipe radius, or both. The central equation of the model, which calculates the ratio of carbon (C) allocated to leaves and pipes, can be parameterized to describe the contrasting stem conductivity behavior of different tree species: from constant stem conductivity (functional homeostasis hypothesis) to height-related reduction in stem conductivity with age (hydraulic limitation hypothesis). The model simulates the daily growth of pipes (vessels or tracheids), fibers and parenchyma as well as vessel size and simulates the wood density profile and the earlywood to latewood ratio from these data. Initial runs indicate the model yields realistic seasonal changes in pipe radius (decreasing pipe radius from spring to autumn) and wood density, as well as realistic differences associated with the competitive status of trees (denser wood in suppressed trees).</div></front></TEI><affiliations><list><country><li>Belgique</li></country></list><tree><noCountry><name sortKey="Evans, Sam P" sort="Evans, Sam P" uniqKey="Evans S" first="Sam P" last="Evans">Sam P. Evans</name><name sortKey="Randle, Tim J" sort="Randle, Tim J" uniqKey="Randle T" first="Tim J" last="Randle">Tim J. Randle</name></noCountry><country name="Belgique"><noRegion><name sortKey="Deckmyn, Gaby" sort="Deckmyn, Gaby" uniqKey="Deckmyn G" first="Gaby" last="Deckmyn">Gaby Deckmyn</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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