Revisiting the Heat Field Deformation (HFD) method for measuring sap flow
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F18%3A43913312" target="_blank" >RIV/62156489:43410/18:43913312 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.3832/ifor2381-011" target="_blank" >http://dx.doi.org/10.3832/ifor2381-011</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3832/ifor2381-011" target="_blank" >10.3832/ifor2381-011</a>
Alternative languages
Result language
angličtina
Original language name
Revisiting the Heat Field Deformation (HFD) method for measuring sap flow
Original language description
The Heat Field Deformation (HFD) technique is a thermodynamic method for measuring sap flow. Based on continuous heating the HFD method allows for high time resolution measurements which are highly important when studying plant responses to abrupt environmental changes. This work provides a succinct review of previously described features of the HFD methodology. Analyzing symmetrical and asymmetrical temperature differences around a measured linear heater (dT(sym) and dT(as)) relative to their ratio dT(sym)/dT(as) (so called a K-diagram) is at the heart of this methodology. This key concept, however, has to date only been generally described in previous works on the HFD technique. My objective here is to provide a comprehensive overview describing different types of K-diagrams, their interpretation and application for determining K-values or dT(as) for a zero flow condition. The K-value is a measured parameter which is particularly important for objectively characterizing heat conducting properties at the sensor insertion point under specific local measurement conditions. Correctly determining the K-value is critical for accurately calculating sap flow based on recorded temperature measurements. I have included in this review several examples demonstrating how the K-value is dependent upon changes to the environment and its important role in sap flow estimation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10611 - Plant sciences, botany
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
iForest
ISSN
1971-7458
e-ISSN
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Volume of the periodical
11
Issue of the periodical within the volume
February
Country of publishing house
IT - ITALY
Number of pages
13
Pages from-to
118-130
UT code for WoS article
000425472500001
EID of the result in the Scopus database
2-s2.0-85042348796