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Quantification of ammonium sorption in acid forest soils by sorption isotherms

Title data

Matschonat, Gunda ; Matzner, Egbert:
Quantification of ammonium sorption in acid forest soils by sorption isotherms.
In: Plant and Soil. Vol. 168-169 (1995) Issue 1 . - pp. 95-101.
ISSN 1573-5036
DOI: https://doi.org/10.1007/BF00029318

Abstract in another language

Quantity/Intensity relations of NH4+ were established to evaluate the role of NH + sorption as a N-sink as wellas for the transport of NH + within the soil profile. Two haplic podzols (originating from Phyllite and Granite)from the German Fichtelgebirge were used. Exchange isotherms were obtained from batch experiments withNH4+ concentrations between 0.01 to 0.6 mmol NH4+ L -l. Background solutions had a composition close to thenatural soil solutions to identify the cations displaced by NH +. Organic layers sorbed a maximum amount of0.3-0.5 mmolc NH4 + 100 g-l, A horizons 0.1-0.2 mmolc NH4 + 100 g-1 and B horizons 0.09 mmolc 100 g-l,corresponding to less than 1% of the cation exchange capacities. NH4 + displaced K + and Ca 2+ throughout thewhole profile, and additionally A1 in the subsoil horizons and H30 + in the organic and A horizons. "Initial massisotherms" (Quantity/Quantity isotherms) were established with distribution coefficients ranging from 0.17 to 0.35for NH4+ with highest values in the O horizons. While exchangeable NH4+ in acid forest soils is considered to beonly a minor long-term sink for deposited NH4+ , it has its relevance in the seasonal dynamics and transport ofNH4+

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER7015
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors > Chair Soil Ecology - Univ.-Prof. Dr. Egbert Matzner
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 13 Aug 2015 06:12
Last Modified: 13 Aug 2015 06:12
URI: https://eref.uni-bayreuth.de/id/eprint/18103