Interannual variation of soil heat flux in a grass-dominated
alpine tundra. Preliminary study from the Jeseníky Mts.

J 2022

Interannual variation of soil heat flux in a grass-dominated alpine tundra. Preliminary study from the Jeseníky Mts.

KUČERA, Jiří, Josef HÁJEK, Miloš BARTÁK a Vít ŠRÁMEK

Základní údaje

Originální název

Interannual variation of soil heat flux in a grass-dominated alpine tundra. Preliminary study from the Jeseníky Mts.

Autoři

KUČERA, Jiří, Josef HÁJEK (203 Česká republika, domácí), Miloš BARTÁK (203 Česká republika, garant, domácí) a Vít ŠRÁMEK

Vydání

Czech Polar Reports, Brno, Masaryk University, 2022, 1805-0689

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10500 1.5. Earth and related environmental sciences

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.000

Kód RIV

RIV/00216224:14310/22:00130952

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.5817/CPR2022-2-21

UT WoS

000957251400001

Klíčová slova anglicky

alpine ecosystems; thermal regime; grassland; Nardus sp; Pinus mugo

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 13. 6. 2023 17:08, Mgr. Marie Šípková, DiS.

Anotace

V originále

Soil heat flux (G) is an important component of the surface energy balance of terrestrial ecosystems. In polar and alpine tundra, G enters the subsurface layers during summer and relatively high G is released from soil during winter. Measuring of energy cycle in polar and alpine treeless ecosystems is challenging due to complex physics of seasonal changes associated with freeze-thaw cycle. That is why field data on G are much less abundant compared to the other World regions. In our 2 year study, we quantified soil heat flux in two alpine plots differing in the characteristics of vegetation cover. The first one was a wind-swept alpine grassland, while the other one was the same vegetation cover localized in a close neighbourhood of a patchy Pinus mugo stand. Our results suggest that both sites had similar yearly time courses of G with peak values of the heat flux to the soil recorded in spring season after the snow melt (April/May). Maxima of heat flux from the soil were found in the December-January period. In summer season (April-October), proportion of G to global radiation (R) reached low values, typically below 10%. Regression analysis revealed that in spite of similar vegetation cover and microrelief of the two study plots, the site neighbouring to the P. mugo stand responded to R more sensitively than the open plot dominated by a grassland community exclusive-ly. Data recorded and the relationships presented in the paper are discussed with the results of similar studies performed in polar and treeless alpine regions.

Návaznosti

EF16_013/0001708, projekt VaV

Název: ECOPOLARIS - Změny ve struktuře a funkci součástí terestrických polárních ekosystémů (CzechPolar2)

VAN 2022, interní kód MU

Název: Český antarktický výzkumný program 2022 (Akronym: CARP 2022)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Český antarktický výzkumný program 2022, Výzkum v oblasti Antarktidy

Citovat

KUČERA, Jiří, Josef HÁJEK, Miloš BARTÁK a Vít ŠRÁMEK. Interannual variation of soil heat flux in a grass-dominated alpine tundra. Preliminary study from the Jeseníky Mts. Czech Polar Reports. Brno: Masaryk University, 2022, roč. 12, č. 2, s. 280-290. ISSN 1805-0689. Dostupné z: https://dx.doi.org/10.5817/CPR2022-2-21.

@article{2291239,
   author = {Kučera, Jiří and Hájek, Josef and Barták, Miloš and Šrámek, Vít},
   article_location = {Brno},
   article_number = {2},
   doi = {http://dx.doi.org/10.5817/CPR2022-2-21},
   keywords = {alpine ecosystems; thermal regime; grassland; Nardus sp; Pinus mugo},
   language = {eng},
   issn = {1805-0689},
   journal = {Czech Polar Reports},
   title = {Interannual variation of soil heat flux in a grass-dominated alpine tundra. Preliminary study from the Jeseníky Mts.},
   url = {https://doi.org/10.5817/CPR2022-2-21},
   volume = {12},
   year = {2022}
}

TY  - JOUR
ID  - 2291239
AU  - Kučera, Jiří - Hájek, Josef - Barták, Miloš - Šrámek, Vít
PY  - 2022
TI  - Interannual variation of soil heat flux in a grass-dominated alpine tundra. Preliminary study from the Jeseníky Mts.
JF  - Czech Polar Reports
VL  - 12
IS  - 2
SP  - 280-290
EP  - 280-290
PB  - Masaryk University
SN  - 18050689
KW  - alpine ecosystems
KW  - thermal regime
KW  - grassland
KW  - Nardus sp
KW  - Pinus mugo
UR  - https://doi.org/10.5817/CPR2022-2-21
N2  - Soil heat flux (G) is an important component of the surface energy balance of terrestrial ecosystems. In polar and alpine tundra, G enters the subsurface layers during summer and relatively high G is released from soil during winter. Measuring of energy cycle in polar and alpine treeless ecosystems is challenging due to complex physics of seasonal changes associated with freeze-thaw cycle. That is why field data on G are much less abundant compared to the other World regions. In our 2 year study, we quantified soil heat flux in two alpine plots differing in the characteristics of vegetation cover. The first one was a wind-swept alpine grassland, while the other one was the same vegetation cover localized in a close neighbourhood of a patchy Pinus mugo stand. Our results suggest that both sites had similar yearly time courses of G with peak values of the heat flux to the soil recorded in spring season after the snow melt (April/May). Maxima of heat flux from the soil were found in the December-January period. In summer season (April-October), proportion of G to global radiation (R) reached low values, typically below 10%. Regression analysis revealed that in spite of similar vegetation cover and microrelief of the two study plots, the site neighbouring to the P. mugo stand responded to R more sensitively than the open plot dominated by a grassland community exclusive-ly. Data recorded and the relationships presented in the paper are discussed with the results of similar studies performed in polar and treeless alpine regions.
ER  -

KUČERA, Jiří, Josef HÁJEK, Miloš BARTÁK a Vít ŠRÁMEK. Interannual variation of soil heat flux in a grass-dominated alpine tundra. Preliminary study from the Jeseníky Mts. \textit{Czech Polar Reports}. Brno: Masaryk University, 2022, roč.~12, č.~2, s.~280-290. ISSN~1805-0689. Dostupné z: https://dx.doi.org/10.5817/CPR2022-2-21.

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