Prediction of ozone effects on net ecosystem production of Norway spruce forest
| Autor: | S. Jurán, Otmar Urban, M. Zapletal, Pavel Cudlín, M. Edwards-Jonášová, John Grace, Ladislav Šigut |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Mixed model
Stomatal conductance Ozone 010504 meteorology & atmospheric sciences Ecology Eddy covariance Northern Hemisphere Flux CO2 Assimilation Forestry 010501 environmental sciences Atmospheric sciences 01 natural sciences Carbon chemistry.chemical_compound chemistry Stomatal Ozone Flux Environmental science lcsh:SD1-669.5 Ecosystem Tropospheric ozone lcsh:Forestry 0105 earth and related environmental sciences Nature and Landscape Conservation Model |
| Zdroj: | iForest-Biogeosciences and Forestry, Vol 11, Iss 1, Pp 743-750 (2018) |
| ISSN: | 1971-7458 |
| Popis: | Future ground-level concentrations of phytotoxic ozone are projected to grow in the Northern Hemisphere, at a rate depending on emission scenarios. We explored the likely changes in net ecosystem production (NEP) due to the increasing concentration of tropospheric ozone by applying a Generalized Additive Mixed Model based on measurements of ozone concentration ([O3]) and stomatal ozone flux (FsO3), at a mountainous Norway spruce forest in the Czech Republic, Central Europe. A dataset covering the growing period (May-August 2009) was examined in this case study. A predictive model based on FsO3 was found to be marginally more accurate than a model using [O3] alone for prediction of the course of NEP when compared to NEP measured by the eddy covariance technique. Both higher [O3] and FsO3 were found to reduce NEP. NEP simulated at low, pre-industrial FsO3 (0.5 nmol m-2 s-1) was higher by 24.8% as compared to NEP assessed at current rates of FsO3 (8.32 nmol m-2 s-1). However, NEP simulated at high FsO3 (17 nmol m-2 s-1), likely in the future, was reduced by 14.1% as compared to NEP values at current FsO3. The interaction between environmental factors and stomatal conductance is discussed in this paper. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|