A modified Jarvis model to improve the expressing of stomatalresponse in a beech forest
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F23%3A00574247" target="_blank" >RIV/67985874:_____/23:00574247 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/23:10469939
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/10.1002/hyp.14955" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/hyp.14955</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/hyp.14955" target="_blank" >10.1002/hyp.14955</a>
Alternative languages
Result language
angličtina
Original language name
A modified Jarvis model to improve the expressing of stomatalresponse in a beech forest
Original language description
The Jarvis-type model, which incorporates stress functions, is commonly used todescribe the physiological behaviour of stomatal response in various vegetation species.However, the model has been criticized for its empirically formulated multiplicative equa-tion, which may not accurately capture themutual impact of intercorrelated stress fac-tors, for example, vapour pressure deficit (VPD) and air temperature (Ta). This studyproposedamodifiedJarvismodel that introduces reduction factors in the stress func-tions of VPD andTato provide the description of canopy conductance. We used sapflow data from a beech forest in the mid-latitude region of Centre Europe to inverselyestimate the canopy conductance with optimized stress functions. Our findings revealthat two recommended parameterization strategies for general deciduous broadleaf for-est (DBF) significantly overestimated thetranspiration rate, with a maximum value of 2 mm/day on rainless days. This suggested that the beech forest exhibited a distinctstomatal response compared to the general DBF category. By applying boundary lineanalysis to fit the parameters, both the unmodified and modified Jarvis models providedbetter simulations of transpiration, with relatively high Nash-Sutcliffe Efficiency (NSE)values of 0.75 and 0.77, respectively. These results indicated that modelling transpirationcan be improved by refining the parameterization of canopy conductance, particularlyfor vegetation species with unique stomatal behaviours that deviated from the charac-teristics of their general vegetation type.The modified Jarvis model offers a more accu-rate description of canopy conductance andenhances the modelling of transpiration invegetated areas, especially under dry environment conditions with relatively high VPD.
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
—
OECD FORD branch
10501 - Hydrology
Result continuities
Project
<a href="/en/project/GN22-20422O" target="_blank" >GN22-20422O: Insect induced tree mortality under climate change – Impacts on hydrology and geochemistry across scales</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Hydrological Processes
ISSN
0885-6087
e-ISSN
1099-1085
Volume of the periodical
37
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
18
Pages from-to
e14955
UT code for WoS article
001045143200001
EID of the result in the Scopus database
2-s2.0-85167512027