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  • Key words: climate change; boreal forest; greenhouse; catchment; vegetation; soil; water; temperature; carbon dioxide.  (1)
  • experimental manipulation  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Modelling ”clean rain” treatments in acidified soils-EXMAN project results (1995)
    Springer
    Water, air & soil pollution 85 (1995), S. 1807-1812 
    Details
    ISSN: 1573-2932
    Keywords: Modelling ; experimental manipulation ; acidification ; recovery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The SAFE dynamic model was applied to a ”clean rain” roof experiment performed within the EXMAN project. In the experiment ambient throughfall was removed and replaced with artificial ”clean throughfall”. Input of S, N and H to the forest ecosystem was reduced by 75–100%. The results of the modelling show, that the time scales of model predictions and experiments are the same. The change in base cation flux was well reproduced, while the simulation of changes in aluminum flux was less successful. pH stayed constant in the experiment as well as in the calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00477242
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Impacts of Elevated Carbon Dioxide and Temperature on a Boreal Forest Ecosystem (CLIMEX Project) (1998)
    Springer
    Ecosystems 1 (1998), S. 345-351 
    Details
    ISSN: 1435-0629
    Keywords: Key words: climate change; boreal forest; greenhouse; catchment; vegetation; soil; water; temperature; carbon dioxide.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: ABSTRACT To evaluate the effects of climate change on boreal forest ecosystems, both atmospheric CO2 (to 560 ppmv) and air temperature (by 3°–5°C above ambient) were increased at a forested headwater catchment in southern Norway. The entire catchment (860 m2) is enclosed within a transparent greenhouse, and the upper 20% of the catchment area is partitioned such that it receives no climate treatment and serves as an untreated control. Both the control and treatment areas inside the greenhouse receive deacidified rain. Within 3 years, soil nitrogen (N) mineralization has increased and the growing season has been prolonged relative to the control area. This has helped to sustain an increase in plant growth relative to the control and has also promoted increased N export in stream water. Photosynthetic capacity and carbon–nitrogen ratio of new leaves of most plant species did not change. While the ecosystem now loses N, the long-term fate of soil N is a key uncertainty in predicting the future response of boreal ecosystems to climate change.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100219900028
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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