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Environmental Effects on Normalized Gross Primary Productivity in Beech and Norway Spruce Forests

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    SYSNO ASEP0548047
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleEnvironmental Effects on Normalized Gross Primary Productivity in Beech and Norway Spruce Forests
    Author(s) Mensah, Caleb (UEK-B) ORCID
    Šigut, Ladislav (UEK-B) RID, ORCID, SAI
    Fischer, Milan (UEK-B) RID, ORCID, SAI
    Foltýnová, Lenka (UEK-B) ORCID, SAI, RID
    Jocher, Georg (UEK-B) SAI, ORCID, RID
    Urban, Otmar (UEK-B) RID, ORCID, SAI
    Wemegah, C.S. (GH)
    Nyantakyi, E.K. (GH)
    Chawla, Shilpy (UEK-B) SAI
    Pavelka, Marian (UEK-B) RID, ORCID, SAI
    Marek, Michal V. (UEK-B) RID, ORCID, SAI
    Number of authors11
    Article number1128
    Source TitleAtmosphere. - : MDPI
    Roč. 12, č. 9 (2021)
    Number of pages25 s.
    Publication formPrint - P
    Languageeng - English
    CountryCH - Switzerland
    Keywordsnet ecosystem exchange ; eddy covariance technique ; soil respiration ; atmospheric demand ; drought ; water ; temperature ; co2 ; regeneration ; sensitivity ; eddy covariance ; European beech ; Norway spruce ; potential GPP ; normalized ; regression modeling
    Subject RIVEH - Ecology, Behaviour
    OECD categoryEcology
    R&D ProjectsLM2018123 GA MŠk - Ministry of Education, Youth and Sports (MEYS)
    Research InfrastructureCzeCOS III - 90123 - Ústav výzkumu globální změny AV ČR, v. v. i.
    Method of publishingOpen access
    Institutional supportUEK-B - RVO:86652079
    UT WOS000699427200001
    EID SCOPUS85114459863
    AnnotationThe strong effects of climate change are expected to negatively impact the long-term resilience and function of forest ecosystems, which could lead to changes in forest carbon balance and productivity. However, these forest responses may vary with local conditions and forest types. Accordingly, this study was carried out to determine gross primary productivity (GPP) sensitivity to changes in environmental parameters. Central European beech (at Stitna) and spruce species (at Bily Kriz and Rajec), growing under contrasting climatic conditions, were studied. The comparative analyses of GPP were based on a five-year-long dataset of eddy covariance fluxes during the main growing season (2012-2016). Results of forest GPP responses with changes in environmental factors from a traditional Stepwise multiple linear regression model (SMLR) were used and compared with Random forest (RF) analyses. To demonstrate how actual GPP trends compare to potential GPP (GPP(pot)) courses expected under near-optimal environmental conditions, we computed normalized GPP (GPP(norm)) with values between 0 and 1 as the ratio of the estimated daily sum of GPP to GPP(pot). The study confirmed the well-known effect of total intensity of the photosynthetically active radiation and its diffuse fraction on GPP(norm) across all the forest types. However, the study also showed the secondary effects of other environmental variables on forest productivity depending on the species and local climatic conditions. The reduction in forest productivity at the beech forest in Stitna was presumed to be mainly induced by edaphic drought (anisohydric behaviour). In contrast, reduced forest productivity at the spruce forest sites was presumably induced by both meteorological and hydrological drought events, especially at the moderately dry climate in Rajec. Overall, our analyses call for more studies on forest productivity across different forest types and contrasting climatic conditions, as this productivity is strongly dependent on species type and site-specific environmental conditions.
    WorkplaceGlobal Change Research Institute
    ContactNikola Šviková,, Tel.: 511 192 268
    Year of Publishing2022
    Electronic address
Number of the records: 1  

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