Evaluation of sampling schemes for estimating instantaneous whole-tree photosynthesis in Populus clones: a modeling approach.
Identifieur interne : 004A85 ( Main/Exploration ); précédent : 004A84; suivant : 004A86Evaluation of sampling schemes for estimating instantaneous whole-tree photosynthesis in Populus clones: a modeling approach.
Auteurs : A T Wolf [États-Unis] ; T E Burk ; J G IsebrandsSource :
- Tree physiology [ 1758-4469 ] ; 1995.
Abstract
We evaluated several sampling schemes for estimating instantaneous whole-tree photosynthesis of 1-year-old Populus clones. Growth of two clones was simulated under varying weather conditions and leaf orientation scenarios providing photosynthetic data on a leaf-by-leaf basis throughout the growing season. Simple random sampling, stratified random sampling and a series of physiologically based sampling schemes were evaluated using either whole-leaf photosynthesis or photosynthetic rate (i.e., photosynthesis per unit leaf area) as the sampling attribute. Ratio and regression estimators with leaf area as an auxiliary variable were also studied. On the basis of their bias and accuracy in estimating instantaneous whole-tree photosynthesis (mg CO(2)), the physiologically based sampling schemes were superior for all combinations of clone type, weather condition and leaf orientation. Aspects of extending the sampling process to estimate daily and seasonal photosynthesis are also elaborated.
DOI: 10.1093/treephys/15.4.237
PubMed: 14965963
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Growth of two clones was simulated under varying weather conditions and leaf orientation scenarios providing photosynthetic data on a leaf-by-leaf basis throughout the growing season. Simple random sampling, stratified random sampling and a series of physiologically based sampling schemes were evaluated using either whole-leaf photosynthesis or photosynthetic rate (i.e., photosynthesis per unit leaf area) as the sampling attribute. Ratio and regression estimators with leaf area as an auxiliary variable were also studied. On the basis of their bias and accuracy in estimating instantaneous whole-tree photosynthesis (mg CO(2)), the physiologically based sampling schemes were superior for all combinations of clone type, weather condition and leaf orientation. Aspects of extending the sampling process to estimate daily and seasonal photosynthesis are also elaborated.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">14965963</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>15</Volume><Issue>4</Issue><PubDate><Year>1995</Year><Month>Apr</Month></PubDate></JournalIssue><Title>Tree physiology</Title><ISOAbbreviation>Tree Physiol</ISOAbbreviation></Journal><ArticleTitle>Evaluation of sampling schemes for estimating instantaneous whole-tree photosynthesis in Populus clones: a modeling approach.</ArticleTitle><Pagination><MedlinePgn>237-44</MedlinePgn></Pagination><Abstract><AbstractText>We evaluated several sampling schemes for estimating instantaneous whole-tree photosynthesis of 1-year-old Populus clones. Growth of two clones was simulated under varying weather conditions and leaf orientation scenarios providing photosynthetic data on a leaf-by-leaf basis throughout the growing season. Simple random sampling, stratified random sampling and a series of physiologically based sampling schemes were evaluated using either whole-leaf photosynthesis or photosynthetic rate (i.e., photosynthesis per unit leaf area) as the sampling attribute. Ratio and regression estimators with leaf area as an auxiliary variable were also studied. On the basis of their bias and accuracy in estimating instantaneous whole-tree photosynthesis (mg CO(2)), the physiologically based sampling schemes were superior for all combinations of clone type, weather condition and leaf orientation. 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