Measurements and estimations of biosphere-atmosphere exchange of greenhouse gases - Arable lands
(2011) p.157-197- Abstract
An overview of carbon dioxide (CO2) exchange and soil respiration measurements is given for representative Hungarian agroecosystems. We present results of long-term atmosphere/biosphere CO2 exchange measurements carried out at the Hungarian tall tower site (Hegyhá tsál). Tall tower net ecosystem exchange (NEE) measurements provided consistent estimates of landscape-wide carbon dioxide dynamics. During 1997-2008, the region mostly behaved as a net CO2 sink on annual scale. Year-round NEE was in the range of-352 ± 49 g C m-2 year-1 and 43 ± 9 g C m-2 year-1 (negative values indicate uptake). The measurements are representative to a mixture of arable lands with... (More)
An overview of carbon dioxide (CO2) exchange and soil respiration measurements is given for representative Hungarian agroecosystems. We present results of long-term atmosphere/biosphere CO2 exchange measurements carried out at the Hungarian tall tower site (Hegyhá tsál). Tall tower net ecosystem exchange (NEE) measurements provided consistent estimates of landscape-wide carbon dioxide dynamics. During 1997-2008, the region mostly behaved as a net CO2 sink on annual scale. Year-round NEE was in the range of-352 ± 49 g C m-2 year-1 and 43 ± 9 g C m-2 year-1 (negative values indicate uptake). The measurements are representative to a mixture of arable lands with small contribution from other biome types. Effects of different soil tillage methods-applied in two long-term tillage experiments (Józsefmajor, Karcag) and in a peach orchard (Vác)-on soil CO 2 emission are also introduced. Soil respiration rate highly depended on the depth of soil disturbance and on the date of the measurements; CO 2 emissions measured immediately after tillage applications and during the vegetation period showed contradictory tendencies. Results obtained from a newly developed laboratory CO2 emission measurement method indicated strong coherences between soil carbon dioxide fluxes and soil water potential values.
(Less)
- author
- publishing date
- 2011-12-01
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Eddy covariance method, NEE, Soil carbon dioxide efflux, Tillage, Undisturbed soil cores
- host publication
- Atmospheric Greenhouse Gases : The Hungarian Perspective - The Hungarian Perspective
- editor
- Haszpra, L
- pages
- 41 pages
- publisher
- Springer
- external identifiers
-
- scopus:84885788617
- ISBN
- 978-90-481-9950-1
- 9789048199495
- DOI
- 10.1007/978-90-481-9950-1_8
- language
- English
- LU publication?
- no
- id
- ad51c22e-d8b2-4f3d-8e3f-23b507d5ef11
- date added to LUP
- 2018-10-16 03:43:12
- date last changed
- 2024-01-15 04:10:57
@inbook{ad51c22e-d8b2-4f3d-8e3f-23b507d5ef11, abstract = {{<p>An overview of carbon dioxide (CO<sub>2</sub>) exchange and soil respiration measurements is given for representative Hungarian agroecosystems. We present results of long-term atmosphere/biosphere CO<sub>2</sub> exchange measurements carried out at the Hungarian tall tower site (Hegyhá tsál). Tall tower net ecosystem exchange (NEE) measurements provided consistent estimates of landscape-wide carbon dioxide dynamics. During 1997-2008, the region mostly behaved as a net CO<sub>2</sub> sink on annual scale. Year-round NEE was in the range of-352 ± 49 g C m<sup>-2</sup> year<sup>-1</sup> and 43 ± 9 g C m<sup>-2</sup> year<sup>-1</sup> (negative values indicate uptake). The measurements are representative to a mixture of arable lands with small contribution from other biome types. Effects of different soil tillage methods-applied in two long-term tillage experiments (Józsefmajor, Karcag) and in a peach orchard (Vác)-on soil CO <sub>2</sub> emission are also introduced. Soil respiration rate highly depended on the depth of soil disturbance and on the date of the measurements; CO <sub>2</sub> emissions measured immediately after tillage applications and during the vegetation period showed contradictory tendencies. Results obtained from a newly developed laboratory CO<sub>2</sub> emission measurement method indicated strong coherences between soil carbon dioxide fluxes and soil water potential values.</p>}}, author = {{Tóth, Eszter and Barcza, Zoltán and Birkás, Márta and Gelybó, Györgyi and Zsembeli, József and Bottlik, László and Davis, Kenneth J. and Haszpra, László and Kern, Anikó and Kljun, Natascha and Koós, Sándor and Kovács, Györgyi and Stingli, Attila and Farkas, Csilla}}, booktitle = {{Atmospheric Greenhouse Gases : The Hungarian Perspective}}, editor = {{Haszpra, L}}, isbn = {{978-90-481-9950-1}}, keywords = {{Eddy covariance method; NEE; Soil carbon dioxide efflux; Tillage; Undisturbed soil cores}}, language = {{eng}}, month = {{12}}, pages = {{157--197}}, publisher = {{Springer}}, title = {{Measurements and estimations of biosphere-atmosphere exchange of greenhouse gases - Arable lands}}, url = {{http://dx.doi.org/10.1007/978-90-481-9950-1_8}}, doi = {{10.1007/978-90-481-9950-1_8}}, year = {{2011}}, }