Soil concentrations and soil-atmosphere exchange of alkylamines in a boreal Scots pine forest

Show full item record



Kieloaho , A-J , Pihlatie , M , Launiainen , S , Kulmala , M , Riekkola , M-L , Parshintsev , J , Mammarella , I , Vesala , T & Heinonsalo , J 2017 , ' Soil concentrations and soil-atmosphere exchange of alkylamines in a boreal Scots pine forest ' , Biogeosciences , vol. 14 , no. 5 , pp. 1075-1091 .

Title: Soil concentrations and soil-atmosphere exchange of alkylamines in a boreal Scots pine forest
Author: Kieloaho, Antti-Jussi; Pihlatie, Mari; Launiainen, Samuli; Kulmala, Markku; Riekkola, Marja-Liisa; Parshintsev, Jevgeni; Mammarella, Ivan; Vesala, Timo; Heinonsalo, Jussi
Contributor organization: Department of Physics
Department of Food and Nutrition
INAR Physics
Department of Chemistry
Laboratory of Analytical Chemistry
Jussi Heinonsalo / Principal Investigator
Methane and nitrous oxide exchange of forests
Micrometeorology and biogeochemical cycles
Forest Soil Science and Biogeochemistry
Environmental Soil Science
Date: 2017-03-08
Language: eng
Number of pages: 17
Belongs to series: Biogeosciences
ISSN: 1726-4170
Abstract: Alkylamines are important precursors in secondary aerosol formation in the boreal forest atmosphere. To better understand the behavior and sources of two alkylamines, dimethylamine (DMA) and diethylamine (DEA), we estimated the magnitudes of soil-atmosphere fluxes of DMA and DEA using a gradient-diffusion approximation based on measured concentrations in soil solution and in the canopy air space. The ambient air concentration of DMA used in this study was a sum of DMA and ethylamine. To compute the amine fluxes, we first estimated the soil air space concentration from the measured soil solution amine concentration using soil physical (temperature, soil water content) and chemical (pH) state variables. Then, we used the resistance analogy to account for gas transport mechanisms in the soil, soil boundary layer, and canopy air space. The resulting flux estimates revealed that the boreal forest soil with a typical long-term mean pH 5.3 is a possible source of DMA (170 +/- 51 nmolm(-2) day(-1)) and a sink of DEA (-1.2 +/- 1.2 nmolm(-2) day(-1)). We also investigated the potential role of fungi as a reservoir for alkylamines in boreal forest soil. We found high DMA and DEA concentrations both in fungal hyphae collected from field humus samples and in fungal pure cultures. The highest DMA and DEA concentrations were found in fungal strains belonging to decay and ectomycorrhizal fungal groups, indicating that boreal forest soil and, in particular, fungal biomass may be important reservoirs for these alkylamines.
114 Physical sciences
1172 Environmental sciences
4112 Forestry
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion

Files in this item

Total number of downloads: Loading...

Files Size Format View
bg_14_1075_2017.pdf 1.409Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record