Počet záznamů: 1
Disentangling carbon uptake and allocation in the stems of a spruce forest
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SYSNO ASEP 0555989 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Disentangling carbon uptake and allocation in the stems of a spruce forest Tvůrce(i) Krejza, Jan (UEK-B) RID, ORCID, SAI
Haeni, M. (CH)
Dařenová, Eva (UEK-B) RID, ORCID, SAI
Foltýnová, Lenka (UEK-B) ORCID, SAI, RID
Fajstavr, Marek (UEK-B) SAI, ORCID, RID
Světlík, Jan (UEK-B) ORCID, SAI, RID
Nezval, Ondřej (UEK-B) SAI, RID, ORCID
Bednář, P. (CZ)
Šigut, Ladislav (UEK-B) RID, ORCID, SAI
Horáček, Petr (UEK-B) RID, ORCID, SAI
Zweifel, R. (CH)Celkový počet autorů 11 Číslo článku 104787 Zdroj.dok. Environmental and Experimental Botany. - : Elsevier - ISSN 0098-8472
Roč. 196, APR (2022)Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova net ecosystem exchange ; tree water-deficit ; norway spruce ; sonic anemometer ; summer drought ; radius changes ; climate-change ; conifer tree ; root-system ; growth ; Carbon balance ; Stem radial increment ; Drought stress ; Carbon flux ; Picea abies ; Partitioning ; Xylogenesis ; Wood formation ; Dendrometer ; Eddy covariance ; Forest inventory ; Tree ring Vědní obor RIV GK - Lesnictví Obor OECD Environmental sciences (social aspects to be 5.7) CEP TJ01000309 GA TA ČR - Technologická agentura ČR EF16_019/0000797 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy TO01000345 GA TA ČR - Technologická agentura ČR LM2018123 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UEK-B - RVO:86652079 UT WOS 000760381500002 EID SCOPUS 85123371092 DOI 10.1016/j.envexpbot.2022.104787 Anotace Although forests store significant amounts of carbon in tree stems, the extent to which stem growth depends on carbon assimilation and environmental factors is poorly understood. In this study, gross primary productivity (GPP) and net ecosystem productivity (NEP) are compared for the first time at daily resolution with stem carbon allocation (SCA) in a spruce forest. We found substantial differences in the seasonal patterns of all variables as a function of environmental conditions, leading to three important findings. First, carbon uptake was only marginally invested in wood growth during the first half of the growing season. This means that there were other priorities for carbon allocation than stem growth at this time of year. Second, our results show that SRI at the beginning of the stem growth period, which mainly involves cell division and expansion, is a process that requires less carbon than the process of xylem lignification and thickening that follows. And third, NEP was generally less sensitive to drought than SCA. This suggests that the carbon uptake balance is less sensitive to dry periods than growth, particularly because the carbon uptake period is much longer than the growth window. These results may change the way we perceive the effects of climate change on forests, as tree carbon dynamics are primarily explained by the seasonal timing of dry periods rather than the intensity of these events. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2023 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0098847222000090
Počet záznamů: 1