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| Titel |
Chemical composition of volatile and extractive compounds of pine and spruce leaf litter in the initial stages of decomposition |
| VerfasserIn |
V. A. Isidorov, M. Smolewska, A. Purzyńska-Pugacewicz, Z. Tyszkiewicz |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 7, no. 9 ; Nr. 7, no. 9 (2010-09-21), S.2785-2794 |
| Datensatznummer |
250004971
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| Publikation (Nr.) |
 copernicus.org/bg-7-2785-2010.pdf |
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| Zusammenfassung |
| A litter bag experiment was conducted to analyze changes in chemical
composition in Scots pine (Pinus sylvestris) and Norway spruce
(Picea abies) needle litter in the first
stages of decomposition in natural conditions. The emission rates of
monoterpenes and concentration of extractive secondary metabolites were
determined five times over a 16-month period. It has been shown that pine
and spruce needle litter in the first stages of decomposition (up to 165
days) emits monoterpene hydrocarbons into the gas phase with the rates
comparable to those in emissions from live needles of these trees. This
suggests that leaf litter is an important source of atmospheric terpenes. It
has also been proved that the litter contains considerable amounts of
non-volatile substances that can be precursors of oxidized volatile
compounds formed as a result of enzymatic reactions. Non-volatile but water
soluble secondary metabolites of the leaf litter may be involved in nutrient
cycling and have an influence on soil community. |
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