Variability in temperature dependence of stem CO2 efflux from Norway spruce trees

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F18%3A43914455" target="_blank" >RIV/62156489:43410/18:43914455 - isvavai.cz</a>

Alternative codes found

RIV/86652079:_____/18:00494820

Result on the web

<a href="https://doi.org/10.1093/treephys/tpy006" target="_blank" >https://doi.org/10.1093/treephys/tpy006</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/treephys/tpy006" target="_blank" >10.1093/treephys/tpy006</a>

Result language

angličtina

Original language name

Variability in temperature dependence of stem CO2 efflux from Norway spruce trees

Original language description

This study presents results from continuous measurements of stem CO2 efflux carried out for seven experimental seasons (from May to October) in a young Norway spruce forest. The objectives of the study were to determine variability in the response of stem CO2 efflux to stem temperature over the season and to observe differences in the calculated relationship between stem temperature and CO2 efflux based on full growing season data or on data divided into periods according to stem growth rate. Temperature sensitivity of stem CO2 efflux (Q10) calculated for the established periods ranged between 1.61 and 3.46 and varied over the season, with the lowest values occurring in July and August. Q10 calculated using data from the full growing seasons ranged between 2.30 and 2.94 and was often significantly higher than Q10 calculated for the individual periods. Temperature-normalized stem CO2 efflux (R10) determined using Q10 from growing season data was overestimated when the temperature was below 10 oC and underestimated when the temperature was above 10 oC, compared with R10 calculated using Q10 established for the individual periods. The differences in daily mean R10 calculated by these two approaches ranged between -0.9 and 0.2 μmol CO2 m-2 s-1. The results of this study confirm that long periods for determining the temperature dependence of stem CO2 efflux encompass different statuses of the wood (especially in relation to stem growth). This may cause bias in models using this relationship for estimating stem CO2 efflux as a function of temperature.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40102 - Forestry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Tree Physiology

ISSN

0829-318X

e-ISSN

—

Volume of the periodical

38

Issue of the periodical within the volume

9

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

1333-1344

UT code for WoS article

000452456200007

EID of the result in the Scopus database

2-s2.0-85054727582