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| Titel |
Does the precipitation redistribution of the canopy sense in the moisture pattern of the forest litter? |
| VerfasserIn |
Katalin Anita Zagyvai-Kiss, Péter Kalicz, Péter Csáfordi, Mihály Kucsara, Zoltán Gribovszki |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250079494
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| Zusammenfassung |
| Precipitation is trapped and temporarily stored by the surfaces of forest crown (canopy
interception) and forest litter (litter interception). The stemflow and throughfall reach the
litter, thus theoretically the litter moisture content depends on these parts of precipitation.
Nowadays the moisture pattern of the forest floor, both spatial and temporal scale, have
growing respect for the forestry. The transition to the continuous cover forestry induce much
higher variability compared to the even aged, more-less homogeneous, monocultural stands.
The gap cutting is one of the key methods in the Hungarian forestry. There is an active
discussion among the forest professionals how to determine the optimal gap size
to maintain the optimal conditions for the seedlings. Among the open questions
is how to modify surrounding trees the moisture pattern of the forest floor in the
gap?
In the early steps of a multidisciplinary project we processed some available data, to
estimate the spatial dependency between the water content of forest litter and the spatial
pattern of the canopy represented by the tree trunk. The maximum water content depends on
dry weight of litter, thus we also analysed that parameter. Data were measured in
three different forest ecosystems: a middle age beech (Fagus sylvatica), a sessile
oak (Quercus petraea) and a spruce (Picea abies) stand. The study site (Hidegvíz
Valley Research Cathcment) is located in Sopron Hills at the eastern border of the
Alps.
Litter samples were collected under each stand (occasionally 10-10 pieces from 40-
40 cm
area) and locations of the samples and neighbouring trees were mapped. We determined dry
weight and the water content of litter in laboratory. The relationship between water content
and the distance of tree trunks in case of spruce and oak stands were not significant and in
case of the beech stand was weakly significant. Climate change effects can influence
significantly forest floor moisture content, therefore this factor has also taken into
account.
Acknowledgement: The research was financially supported by the
TÁMOP-4.2.2.A-11/1/KONV-2012-0004 and TÁMOP-4.2.2.A-11/1/KONV-2012-0013 joint
EU-national research projects. |
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