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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F21%3A00548047" target="_blank" >RIV/86652079:_____/21:00548047 - isvavai.cz</a>

Alternative codes found

RIV/62156489:43410/21:43920469 RIV/62156489:43210/21:43920469

Result on the web

<a href="https://www.mdpi.com/2073-4433/12/9/1128" target="_blank" >https://www.mdpi.com/2073-4433/12/9/1128</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/atmos12091128" target="_blank" >10.3390/atmos12091128</a>

Result language

angličtina

Original language name

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

Original language description

The 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.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

10618 - Ecology

Project

<a href="/en/project/LM2018123" target="_blank" >LM2018123: CzeCOS</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

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

Name of the periodical

Atmosphere

ISSN

2073-4433

e-ISSN

2073-4433

Volume of the periodical

12

Issue of the periodical within the volume

9

Country of publishing house

CH - SWITZERLAND

Number of pages

25

Pages from-to

1128

UT code for WoS article

000699427200001

EID of the result in the Scopus database

2-s2.0-85114459863