Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F19%3A00507614" target="_blank" >RIV/86652079:_____/19:00507614 - isvavai.cz</a>

Result on the web

<a href="https://www.jove.com/video/59525/measurements-of-co2-fluxes-at-non-ideal-eddy-covariance-sites" target="_blank" >https://www.jove.com/video/59525/measurements-of-co2-fluxes-at-non-ideal-eddy-covariance-sites</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3791/59525" target="_blank" >10.3791/59525</a>

Result language

angličtina

Original language name

Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites

Original language description

This protocol is an example of utilizing the eddy covariance (EC) technique to investigate spatially and temporally averaged net CO2 fluxes (net ecosystem production, NEP), in non-typical ecosystems, on a currently reforested windthrow area in Poland. After a tornado event, a relatively narrow 'corridor' was created within surviving forest stands, which complicates such kind of experiments. The application of other measuring techniques, such as the chamber method, is even more difficult under these circumstances, because especially at the beginning, fallen trees and in general great heterogeneity of the site provide a challenging platform to perform flux measurements and then to properly upscale obtained results. In comparison with standard EC measurements carried out in untouched forests, the case of windthrow areas requires special consideration when it comes to the site location and data analysis in order to ensure their representativeness. Therefore, here we present a protocol of real-time, continuous CO2 flux measurements at a dynamically changing, non-ideal EC site, which includes (1) site location and instrumentation setup, (2) flux computation, (3) rigorous data filtering and quality control, and (4) gap filling and net fluxes partitioning into CO2 respiration and absorption. The main advantage of the described methodology is that it provides a detailed description of the experimental setup and measurement performance from scratch, which can be applied to other spatially limited ecosystems. It can also be viewed as a list of recommendations on how to deal with unconventional site operation, providing a description for non-specialists. Obtained quality-checked, gap filled, half-hour values of net CO2, as well as absorption and respiration fluxes, can be finally aggregated into daily, monthly, seasonal or annual totals.

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

10509 - Meteorology and atmospheric sciences

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Jove-Journal of Visualized Experiments

ISSN

1940-087X

e-ISSN

—

Volume of the periodical

jun

Issue of the periodical within the volume

148

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

1-9

UT code for WoS article

000473295900056

EID of the result in the Scopus database

2-s2.0-85069286830