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Comparative gas exchange measurements on spruce under clean air respectively site air for qualitative establishment of primary damage due to air pollutants. Final report; Vergleichende Gaswechselmessungen unter Reinluft bzw. Standortsluft an Fichte zur qualitativen Ermittlung von Primaerschaeden durch Luftverunreinigungen. Schlussbericht

Miscellaneous:

Abstract

How harmful are gaseous air pollutants to the primary capability of spruces for producing plant tissue under natural site conditions? To elucidate this question, a pair of twigs in the summit area of a 70-year-old tree exhibiting the symptoms of `novel forest disease` were fumigated for four years without interruption with clean air and site air using completely air-conditioned gas exchange chambers. CO{sub 2} and vapour exchange including all climate data and air pollutant concentrations (SO{sub 2}, NO, NO{sub 2} and O{sub 3} as well as spot samples of airborne organic compounds) were recorded without interruption at intervals of four minutes. From the middle of the third year of the experiment, SO{sub 2} and O{sub 3} could be subsequently dosed according to the external air concentrations in order to make up for unavoidable losses in the measuring system. In addition it was possible by the end of the third year of the experiment to simultaneously expose the twigs inside the chambers to overhead irrigation with clean rainwater respectively rainwater from the site during precipitation events. (orig.). [Deutsch] Zur Pruefung der Frage inwieweit gasfoermige Luftschadstoffe unter natuerlichen Verhaeltnissen des Standortes die primaere Stofferzeugung der Fichte schaedigen, wurde ein Zweigpaar im Wipfelbereich  More>>
Authors:
Publication Date:
Dec 31, 1992
Product Type:
Miscellaneous
Report Number:
ETDE-mf-93750693
Reference Number:
SCA: 553000; 560300; 400102; PA: DE-93:000157; SN: 93000915865
Resource Relation:
Other Information: PBD: [1992]
Subject:
60 APPLIED LIFE SCIENCES; 63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; SPRUCES; BIOLOGICAL STRESS; FORESTS; AIR POLLUTION; SULFUR DIOXIDE; NITROGEN OXIDES; OZONE; PLANT GROWTH; TRANSPIRATION; FIELD TESTS; POLLUTION CONTROL EQUIPMENT; AIR CLEANING SYSTEMS; 553000; 560300; 400102; AGRICULTURE AND FOOD TECHNOLOGY; CHEMICALS METABOLISM AND TOXICOLOGY; CHEMICAL AND SPECTRAL PROCEDURES
OSTI ID:
10112884
Research Organizations:
Forschungszentrum Juelich GmbH (Germany). Projekttraeger Biologie, Energie, Oekologie; Muenchen Univ. (Germany). Lehrstuhl fuer Forstbotanik; Bundesministerium fuer Forschung und Technologie, Bonn (Germany)
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Other: ON: DE93750693; CNN: Contract BMFT 0339180B; TRN: DE9300157
Availability:
OSTI; NTIS (US Sales Only)
Submitting Site:
DE
Size:
77 p.
Announcement Date:
Jun 30, 2005

Miscellaneous:

Citation Formats

Koch, W. Comparative gas exchange measurements on spruce under clean air respectively site air for qualitative establishment of primary damage due to air pollutants. Final report; Vergleichende Gaswechselmessungen unter Reinluft bzw. Standortsluft an Fichte zur qualitativen Ermittlung von Primaerschaeden durch Luftverunreinigungen. Schlussbericht. Germany: N. p., 1992. Web.
Koch, W. Comparative gas exchange measurements on spruce under clean air respectively site air for qualitative establishment of primary damage due to air pollutants. Final report; Vergleichende Gaswechselmessungen unter Reinluft bzw. Standortsluft an Fichte zur qualitativen Ermittlung von Primaerschaeden durch Luftverunreinigungen. Schlussbericht. Germany.
Koch, W. 1992. "Comparative gas exchange measurements on spruce under clean air respectively site air for qualitative establishment of primary damage due to air pollutants. Final report; Vergleichende Gaswechselmessungen unter Reinluft bzw. Standortsluft an Fichte zur qualitativen Ermittlung von Primaerschaeden durch Luftverunreinigungen. Schlussbericht." Germany.
@misc{etde_10112884,
title = {Comparative gas exchange measurements on spruce under clean air respectively site air for qualitative establishment of primary damage due to air pollutants. Final report; Vergleichende Gaswechselmessungen unter Reinluft bzw. Standortsluft an Fichte zur qualitativen Ermittlung von Primaerschaeden durch Luftverunreinigungen. Schlussbericht}
author = {Koch, W}
abstractNote = {How harmful are gaseous air pollutants to the primary capability of spruces for producing plant tissue under natural site conditions? To elucidate this question, a pair of twigs in the summit area of a 70-year-old tree exhibiting the symptoms of `novel forest disease` were fumigated for four years without interruption with clean air and site air using completely air-conditioned gas exchange chambers. CO{sub 2} and vapour exchange including all climate data and air pollutant concentrations (SO{sub 2}, NO, NO{sub 2} and O{sub 3} as well as spot samples of airborne organic compounds) were recorded without interruption at intervals of four minutes. From the middle of the third year of the experiment, SO{sub 2} and O{sub 3} could be subsequently dosed according to the external air concentrations in order to make up for unavoidable losses in the measuring system. In addition it was possible by the end of the third year of the experiment to simultaneously expose the twigs inside the chambers to overhead irrigation with clean rainwater respectively rainwater from the site during precipitation events. (orig.). [Deutsch] Zur Pruefung der Frage inwieweit gasfoermige Luftschadstoffe unter natuerlichen Verhaeltnissen des Standortes die primaere Stofferzeugung der Fichte schaedigen, wurde ein Zweigpaar im Wipfelbereich eines i.S. der `neuartigen Waldschaeden` geschaedigten 70 jaehrigen Baumes ueber 4 Jahre ununterbrochen mit Reinluft und Standortsluft mittels vollklimatisierter Gaswechselkammern begast und der CO{sub 2} und Wasserdampfgaswechsel einschliesslich aller Klimadaten und der Luftschadstoffbelastung (SO{sub 2}, NO, NO{sub 2} und O{sub 3}, sowie stichprobenartig die luftgetragenen organischen Verbindungen) im 4 Minuten-Takt lueckenlos erfasst. Ab Mitte des dritten Versuchsjahres war es moeglich SO{sub 2} und O{sub 3} im Nachlauf an die Aussenluftkonzentration nachzudosieren um die unvermeidlichen Verluste im Messsystem auszugleichen. Zusaetzlich konnten gegen Ende des dritten Versuchsjahres die Zweige im Innern der Kammern zeitgleich mit den aeusseren Niederschlaegen mit sauberem Regenwasser bzw. mit dem Regenwassers des Standortes beregnet werden. (orig.).}
place = {Germany}
year = {1992}
month = {Dec}
}