Validation of photosynthate production in ECOPHYS, an ecophysiological growth process model of Populus.
Identifieur interne : 004C74 ( Main/Exploration ); précédent : 004C73; suivant : 004C75Validation of photosynthate production in ECOPHYS, an ecophysiological growth process model of Populus.
Auteurs : George E. Host [États-Unis] ; H. Michael Rauscher ; J. G. Isebrands ; Donald A. MichaelSource :
- Tree physiology [ 1758-4469 ] ; 1990.
Abstract
A model of photosynthate production is the central component of a larger whole-tree ecophysiological growth process model for Populus (ECOPHYS). This photosynthesis model was validated by comparing predicted photosynthate production values for individual leaves and the total tree with hourly field measurements collected on four days spaced throughout a growing season. Simulated trees had identical numbers of leaves and leaf areas as the sample trees studied in the field, and hourly weather data collected on the plantation site were supplied as a model input. Total production for the four sample days ranged between 200 and 4900 mg CO(2) tree(-1) day(-1). Model predictions of total daily photosynthate production were within 12% of the observed rates for three of the four sampling days. Diurnal variations in stomatal conductance and ambient CO(2) concentrations and seasonal variations in area leaf weight were the primary sources of error. Total leaf area, proportion of sunlit leaf area, and photosynthetic efficiency were the most important factors influencing carbon dioxide exchange rates.
DOI: 10.1093/treephys/7.1-2-3-4.283
PubMed: 14972924
Affiliations:
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Host</name><affiliation wicri:level="2"><nlm:affiliation>USDA Forest Service, North Central Forest Experiment Station, Forestry Sciences Laboratory, 1831 Highway 169 East, Grand Rapids, MN 55744, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>USDA Forest Service, North Central Forest Experiment Station, Forestry Sciences Laboratory, 1831 Highway 169 East, Grand Rapids, MN 55744</wicri:regionArea><placeName><region type="state">Minnesota</region></placeName></affiliation></author><author><name sortKey="Rauscher, H Michael" sort="Rauscher, H Michael" uniqKey="Rauscher H" first="H. Michael" last="Rauscher">H. Michael Rauscher</name></author><author><name sortKey="Isebrands, J G" sort="Isebrands, J G" uniqKey="Isebrands J" first="J. G." last="Isebrands">J. G. Isebrands</name></author><author><name sortKey="Michael, Donald A" sort="Michael, Donald A" uniqKey="Michael D" first="Donald A." last="Michael">Donald A. Michael</name></author></analytic><series><title level="j">Tree physiology</title><idno type="eISSN">1758-4469</idno><imprint><date when="1990" type="published">1990</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A model of photosynthate production is the central component of a larger whole-tree ecophysiological growth process model for Populus (ECOPHYS). This photosynthesis model was validated by comparing predicted photosynthate production values for individual leaves and the total tree with hourly field measurements collected on four days spaced throughout a growing season. Simulated trees had identical numbers of leaves and leaf areas as the sample trees studied in the field, and hourly weather data collected on the plantation site were supplied as a model input. Total production for the four sample days ranged between 200 and 4900 mg CO(2) tree(-1) day(-1). Model predictions of total daily photosynthate production were within 12% of the observed rates for three of the four sampling days. Diurnal variations in stomatal conductance and ambient CO(2) concentrations and seasonal variations in area leaf weight were the primary sources of error. Total leaf area, proportion of sunlit leaf area, and photosynthetic efficiency were the most important factors influencing carbon dioxide exchange rates.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">14972924</PMID><DateRevised><Year>2019</Year><Month>11</Month><Day>20</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1758-4469</ISSN><JournalIssue CitedMedium="Internet"><Volume>7</Volume><Issue>1_2_3_4</Issue><PubDate><Year>1990</Year><Month>Dec</Month></PubDate></JournalIssue><Title>Tree physiology</Title><ISOAbbreviation>Tree Physiol</ISOAbbreviation></Journal><ArticleTitle>Validation of photosynthate production in ECOPHYS, an ecophysiological growth process model of Populus.</ArticleTitle><Pagination><MedlinePgn>283-296</MedlinePgn></Pagination><Abstract><AbstractText>A model of photosynthate production is the central component of a larger whole-tree ecophysiological growth process model for Populus (ECOPHYS). This photosynthesis model was validated by comparing predicted photosynthate production values for individual leaves and the total tree with hourly field measurements collected on four days spaced throughout a growing season. Simulated trees had identical numbers of leaves and leaf areas as the sample trees studied in the field, and hourly weather data collected on the plantation site were supplied as a model input. Total production for the four sample days ranged between 200 and 4900 mg CO(2) tree(-1) day(-1). Model predictions of total daily photosynthate production were within 12% of the observed rates for three of the four sampling days. Diurnal variations in stomatal conductance and ambient CO(2) concentrations and seasonal variations in area leaf weight were the primary sources of error. 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G.</ForeName><Initials>JG</Initials></Author><Author ValidYN="Y"><LastName>Michael</LastName><ForeName>Donald A.</ForeName><Initials>DA</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Canada</Country><MedlineTA>Tree Physiol</MedlineTA><NlmUniqueID>100955338</NlmUniqueID><ISSNLinking>0829-318X</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1990</Year><Month>12</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1990</Year><Month>12</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1990</Year><Month>12</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">14972924</ArticleId><ArticleId IdType="doi">10.1093/treephys/7.1-2-3-4.283</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Minnesota</li></region></list><tree><noCountry><name sortKey="Isebrands, J G" sort="Isebrands, J G" uniqKey="Isebrands J" first="J. G." last="Isebrands">J. G. Isebrands</name><name sortKey="Michael, Donald A" sort="Michael, Donald A" uniqKey="Michael D" first="Donald A." last="Michael">Donald A. Michael</name><name sortKey="Rauscher, H Michael" sort="Rauscher, H Michael" uniqKey="Rauscher H" first="H. Michael" last="Rauscher">H. Michael Rauscher</name></noCountry><country name="États-Unis"><region name="Minnesota"><name sortKey="Host, George E" sort="Host, George E" uniqKey="Host G" first="George E." last="Host">George E. Host</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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