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Evaluation of simul...
Evaluation of simulated ozone effects in forest ecosystems against biomass damage estimates from fumigation experiments
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Franz, M. (författare)
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Alonso, R. (författare)
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Arneth, A. (författare)
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Buker, P. (författare)
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Elvira, S. (författare)
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Gerosa, G. (författare)
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Emberson, L. (författare)
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Feng, Z. Z. (författare)
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Le Thiec, D. (författare)
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Marzuoli, R. (författare)
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Oksanen, E. (författare)
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- Uddling, Johan, 1972 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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Wilkinson, M. (författare)
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Zaehle, S. (författare)
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(creator_code:org_t)
- 2018-11-21
- 2018
- Engelska.
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Ingår i: Biogeosciences. - : Copernicus GmbH. - 1726-4170 .- 1726-4189. ; 15:22, s. 6941-6957
- Relaterad länk:
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https://bg.copernicu...
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https://gup.ub.gu.se...
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https://doi.org/10.5...
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Abstract
Ämnesord
Stäng
- Regional estimates of the effects of ozone pollution on forest growth depend on the availability of reliable injury functions that estimate a representative ecosystem response to ozone exposure. A number of such injury functions for forest tree species and forest functional types have recently been published and subsequently applied in terrestrial biosphere models to estimate regional or global effects of ozone on forest tree productivity and carbon storage in the living plant biomass. The resulting impacts estimated by these biosphere models show large uncertainty in the magnitude of ozone effects predicted. To understand the role that these injury functions play in determining the variability in estimated ozone impacts, we use the O-CN biosphere model to provide a standardised modelling framework. We test four published injury functions describing the leaf-level, photosynthetic response to ozone exposure (targeting the maximum carboxylation capacity of Rubisco (V-cmax) or net pho-tosynthesis) in terms of their simulated whole-tree biomass responses against data from 23 ozone filtration/fumigation experiments conducted with young trees from European tree species at sites across Europe with a range of climatic conditions. Our results show that none of these previously published injury functions lead to simulated whole-tree biomass reductions in agreement with the observed dose-response relationships derived from these field experiments and instead lead to significant over-or underestimations of the ozone effect. By re-parameterising these photosynthetically based injury functions, we develop linear, plant-functional-typespecific dose-response relationships, which provide accurate simulations of the observed whole-tree biomass response across these 23 experiments.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Nyckelord
- mature trees
- stomatal conductance
- tropospheric ozone
- unifying theory
- climate-change
- surface ozone
- picea-abies
- young trees
- carbon sink
- exposure
- Environmental Sciences & Ecology
- Geology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
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Franz, M.
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Alonso, R.
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Arneth, A.
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Buker, P.
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Elvira, S.
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Gerosa, G.
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visa fler...
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Emberson, L.
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Feng, Z. Z.
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Le Thiec, D.
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Marzuoli, R.
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Oksanen, E.
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Uddling, Johan, ...
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Wilkinson, M.
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Zaehle, S.
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Biologi
- Artiklar i publikationen
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Biogeosciences
- Av lärosätet
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Göteborgs universitet