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Radiation components of beech stands in Southwest Germany

  • Thomas Holst
  • Helmut Mayer
Publishing year: 2005
Language: English
Pages: 107-115
Publication/Series: Meteorologische Zeitschrift
Volume: 14
Issue: 2
Document type: Journal article
Publisher: E Schweizerbartsche Verlags

Abstract english

Within the framework of an interdisciplinary project on the impact of climate and forest management on

beech dominated deciduous forests, forest meteorological measurements are carried out within and above

different beech stands (Fagus sylvatica L.) on opposite slopes of a narrow valley located in the Swabian

Jura mountain range (south-west Germany). Referring to test plots on both slopes, the following cycles of

radiation components are discussed: (1) Monthly mean values of transmission and extinction of global solar

irradiance, photosynthetically active radiation as well as UV-A and UV-B radiation through the canopy, (2)

diurnal courses of surface albedo α, net short-wave radiation K*, net long-wave radiation L* and net all-wave

radiation Q* for a cloudless day in March (leafless period) and a cloudless day in July (fully-leaved period)

above and below the canopy of different beech stands, and (3) monthly mean values of α, K*, L* and Q* for

the same stand conditions as for (2). The results point out the combined impact on the investigated radiation

components emanating from seasonally variable canopy density (quantified by the plant area index), exposure

and sun elevation.


  • Physical Geography


  • ISSN: 1610-1227
E-mail: thomas [dot] holst [at] nateko [dot] lu [dot] se


Dept of Physical Geography and Ecosystem Science

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Dept of Physical Geography and Ecosystem Science


Department of Physical Geography and Ecosystem Science
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