NDLI: Water chemistry in a forested catchment as influenced by biogeochemical transformations in riparian soils

Content Provider	Springer Nature Link
Author	Feger, Karl Heinz Köhler, Hayo Armbruster, Martin
Copyright Year	1999
Abstract	Die Umsetzungen von Nitrat und Sulfat wurden im Hinblick auf die Bachwasserqualität in einem kleinen bewaldeten Wassereinzugsgebiet im Schwarzwald untersucht. Analysen von Saugkerzenwässern aus dem dauervernäßten Randbereich der Bäche geben Hinweise auf erhebliche reduktionsbedingte Nitratverluste. Dies deckt sich mit Ergebnissen eines Laborversuchs, bei dem nitrathaltige Lösungen durch Bodensäulen aus einem Quellmoorgley perkoliert wurden. Während die Nitrat-Verluste offensichtlich durch Denitrifikation bedingt sind, überlagern sich bei der Sulfat-Dynamik verschiedene Prozesse. Insgesamt werden die beobachteten Reduktionsprozesse durch höhere Temperatur und lange Kontaktzeit mit der Festphase begünstigt. Die Auswirkungen auf andere hydrochemische Parameter (insbesondere pH-Wert und Säureneutralisationskapazität) werden diskutiert.Transformations of nitrate and sulfate were investigated with respect to streamwater quality in a forested headwater catchment in the Black Forest (SW Germany). Analyses of seepage collected with ceramic cups in the waterlogged riparian zone provide evidence for a distinct removal of nitrate due to reduction processes. This is in accordance with results from a laboratory experiment. Solutions enriched with nitrate were percolated through soil columns from a histic gleysol. Apparently, nitrate removal results from denitrification, whereas in the dynamics of sulfate various processes appear to be superimposed. In total, the reduction processes observed are favoured by higher temperatures as well as by longer times of contact with the solid phase. The effects on other hydrochemical parameters (notably pH-value and acid neutralizing capacity) are discussed.
Starting Page	345
Ending Page	354
Page Count	10
File Format	PDF
ISSN	00158003
Journal	Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch
Volume Number	118
Issue Number	1-6
e-ISSN	14390337
Language	English
Publisher	Springer-Verlag
Publisher Date	1999-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	water quality water acidification nitrate sulfate denitrification riparian zone Forestry Plant Sciences Plant Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science Forestry

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