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Vertical profiles of air pollutants in a spruce forest - analysis of adherent water, throughfall and deposits on surrogate surfaces

: Fritsche, U.; Gernert, M.; Schindler, C.


Atmospheric environment 23 (1989), Nr.8, S.1807-1814 : Abb.,Tab.,Lit.
ISSN: 0004-6981
ISSN: 1352-2310
Fraunhofer IUCT ( IME) ()
anhaftende Feuchtigkeit; Azidität; Bestandsniederschlag; Fichtenbestand; Luftverunreinigung; Surrogatfläche; Vertikalprofil; Waldschaden; Windgeschwindigkeit

Vertical profiles of air pollutants were studied in a spruce forest, which is damaged mainly in the upper parts of the canopy. The sampling included plant surface water, troughfall and surrogate surfaces at five different heights. For most components a low amount of precipitation after a dry period yielded in vertical profiles of the plant surfaces water shaped by the wind speed. If there was enough precipitation to start wash-off, the maximum of the concentrations shifted downwards. An exception was the acidity, which increased continuously from the top to the bottom of the trees. The deposition on vertically orientated surfaces and face up orientated surfaces were in the same order of magnitude, but the deposition on face down orientated surfaces was negligible.