| Records |
| Author |
Sándor, R.; Barcza, Z.; Hidy, D.; Lellei-Kovács, E.; Ma, S.; Bellocchi, G. |
| Title |
Modelling of grassland fluxes in Europe: evaluation of two biogeochemical models |
Type |
Journal Article |
| Year |
2016 |
Publication  |
Agriculture, Ecosystems and Environment |
Abbreviated Journal |
Agric. Ecosyst. Environ. |
| Volume |
215 |
Issue |
|
Pages |
1-19 |
| Keywords |
carbon-water fluxes; climate change; grasslands; model comparison; net ecosystem exchange; terrestrial carbon balance; pasture simulation-model; climate-change; nitrous-oxide; land-use; co2; photosynthesis; responses; water |
| Abstract |
Two independently developed simulation models – the grassland-specific PaSim and the biome-generic Biome-BGC MuSo (BBGC MuSo) – linking climate, soil, vegetation and management to ecosystem biogeochemical cycles were compared in a simulation of carbon (C) and water fluxes. The results were assessed against eddy-covariance flux data from five observational grassland sites representing a range of conditions in Europe: Grillenburg in Germany, Laqueuille in France with both extensive and intensive management, Monte Bondone in Italy and Oensingen in Switzerland. Model comparison (after calibration) gave substantial agreement, the performances being marginal to acceptable for weekly-aggregated gross primary production and ecosystem respiration (R-2 similar to 0.66 – 0.91), weekly evapotranspiration (R-2 similar to 0.78 – 0.94), soil water content in the topsoil (R-2 similar to 0.1 -0.7) and soil temperature (R-2 similar to 0.88 – 0.96). The bias was limited to the range -13 to 9 g C m(-2) week(-1) for C fluxes (-11 to 8 g C m(-2) week(-1) in case of BBGC MuSo, and -13 to 9 g C m(-2) week(-1) in case of PaSim) and -4 to 6 mm week for water fluxes (with BBGC MuSo providing somewhat higher estimates than PaSim), but some higher relative root mean square errors indicate low accuracy for prediction, especially for net ecosystem exchange The sensitivity of simulated outputs to changes in atmospheric carbon dioxide concentration ([CO2]), temperature and precipitation indicate, with certain agreement between the two models, that C outcomes are dominated by [CO2] and temperature gradients, and are less due to precipitation. ET rates decrease with increasing [CO2] in PaSim (consistent with experimental knowledge), while lack of appropriate stomatal response could be a limit in BBGC MuSo responsiveness. Results of the study indicate that some of the errors might be related to the improper representation of soil water content and soil temperature. Improvement is needed in the model representations of soil processes (especially soil water balance) that strongly influence the biogeochemical cycles of managed and unmanaged grasslands. (C) 2015 Elsevier B.V. All rights reserved. |
| Address |
2016-10-31 |
| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
English |
Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0167-8809 |
ISBN |
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Medium |
Article |
| Area |
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Expedition |
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Conference |
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| Notes |
CropM, LiveM, ft_macsur |
Approved |
no |
| Call Number |
MA @ admin @ |
Serial |
4808 |
| Permanent link to this record |
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| Author |
Prange, S.; Vohland, K.; Conradt, T.; Hattermann, F.F. |
| Title |
Klimabedingte Veränderungen der Abflussdynamik von ausgewählten deutschen Fließgewässern und ihre naturschutzfachliche Bedeutung. In: Schutzgebiete Deutschlands im Klimawandel – Risiken und Handlungsoptionen |
Type |
Book Chapter |
| Year |
2013 |
Publication |
|
Abbreviated Journal |
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| Volume |
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Issue |
|
Pages |
55-69 |
| Keywords |
Xc |
| Abstract |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Bundesamt für Naturschutz |
Place of Publication |
Bonn-Bad Godesberg |
Editor |
Badeck, F.; Böhning-Gaese, K.; Ellwanger, G.; Hanspach, J.; Ibisch, P.L.; Klotz, S.; Kreft, S.; Kühn, I.; Schröder, E.; Trautmann, S.; Cramer, W. |
| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
Naturschutz und Biologische Vielfalt |
Abbreviated Series Title |
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| Series Volume |
129 |
Series Issue |
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Edition |
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| ISSN |
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ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
no |
| Call Number |
MA @ admin @ |
Serial |
2736 |
| Permanent link to this record |
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| Author |
Hoff, H.; Gerten, D.; Waha, K.; Warner, J.; Keulertz, M.; Sojamo, S. |
| Title |
Green and Blue Water in Africa: How Foreign Direct Investment can Support Sustainable Intensification |
Type |
Book Chapter |
| Year |
2013 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
359-375 |
| Keywords |
Xc |
| Abstract |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Routledge |
Place of Publication |
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Editor |
Allan, T.; Keulertz, M.; Sojamo, S.A. |
| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
Handbook of Land and Water Grabs in Africa |
Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
no |
| Call Number |
MA @ admin @ |
Serial |
2480 |
| Permanent link to this record |
