Combining sap flow and eddy covariance approaches to derive stomatal and non-stomatal O-3 fluxes in a forest stand
Nunn, AJ; Cieslik, S; Metzger, U; Wieser, G; Matyssek, R
HERO ID
644383
Reference Type
Journal Article
Year
2010
Language
English
PMID
| HERO ID | 644383 |
|---|---|
| In Press | No |
| Year | 2010 |
| Title | Combining sap flow and eddy covariance approaches to derive stomatal and non-stomatal O-3 fluxes in a forest stand |
| Authors | Nunn, AJ; Cieslik, S; Metzger, U; Wieser, G; Matyssek, R |
| Journal | Environmental Pollution |
| Volume | 158 |
| Issue | 6 |
| Page Numbers | 2014-2022 |
| Abstract | Stomatal O-3 fluxes to a mixed beech/spruce stand (Fagus sylvatica/Picea abies) in Central Europe were determined using two different approaches. The sap flow technique yielded the tree-level transpiration, whereas the eddy covariance method provided the stand-level evapotranspiration. Both data were then converted into stomatal ozone fluxes, exemplifying this novel concept for July 2007. Sap flow-based stomatal O-3 flux was 33% of the total O-3 flux, whereas derivation from evapotranspiration rates in combination with the Penman-Monteith algorithm amounted to 47%. In addition to this proportional difference, the sap flow-based assessment yielded lower levels of stomatal O-3 flux and reflected stomatal regulation rather than O-3 exposure, paralleling the daily courses of canopy conductance for water vapor and eddy covariance-based total stand-level O-3 flux. The demonstrated combination of sap flow and eddy covariance approaches supports the development of O-3 risk assessment in forests from O-3 exposure towards flux-based concepts. (C) 2009 Elsevier Ltd. All rights reserved. |
| Doi | 10.1016/j.envpol.2009.11.034 |
| Pmid | 20056523 |
| Wosid | WOS:000278343000005 |
| Url | http://linkinghub.elsevier.com/retrieve/pii/S0269749109005946 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | Ozone flux; Sap flow; Eddy covariance; Penman-Monteith equation; Forests; beech fagus-sylvatica; intercellular air spaces; elevated atmospheric; co2; ozone uptake; adult beech; mature trees; picea-abies; canopy; transpiration; sapflow measurements; deciduous forest |
| Is Qa | No |
| Relationship(s) |
|