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| Titel |
Effects of continuous cover forestry on soil moisture pattern - Beginning steps of a Hungarian study |
| VerfasserIn |
Péter Kalicz, Dénes Bartha, Gábor Brolly, Péter Csáfordi, Ágnes Csiszár, Attila Eredics, Zoltán Gribovszki, Géza Király, Tamás Kollár, Márton Korda, Mihály Kucsara, Krisztina Nótári, Balázs Kornél Szegedi, Viktor Tiborcz, Gergely Zagyvai, Katalin Anita Zagyvai-Kiss |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250095202
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| Publikation (Nr.) |
 EGU/EGU2014-10653.pdf |
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| Zusammenfassung |
| Nowadays Hungarian foresters encounter a new challenge. The traditional management
practices do not meet anymore with the demand of the civil society. The good old
clearcut is no more a supported technology in forest regeneration. The transition to
the continuous cover forestry induces much higher spatial variability compared to
the even aged, more or less homogeneous, monoculture stands. The gap cutting
is one of the proposed key methods in the Hungarian forestry. There is an active
discussion among forest professionals how to determine the optimal gap size to
maintain ideal conditions for the seedlings. Among other open questions for example
how the surrounding trees modify the moisture pattern of the forest floor in the
gap?
In the early steps of a multidisciplinary project we established four research plots to study
the spatial and temporal variability of soil moisture in the forest gap and the surrounding
undisturbed stand. Each plot is located in oak (Quercus spp.) stands. Natural regeneration of
oak stands is more problematic in our climate compared to the beech (Fagus sylvatica) which
is located in the more humid or semi-humid areas of our country. All plots are located in the
western part of Hungary: close to Sopron, Bejcgyertyános, Vép and Vajszló settlements. The
last plot is an extensive research area, which is located in the riparian zone of a
tributary of Feketevíz River. We monitor here the close-to-surface groundwater level
fluctuation with pressure transducers. With a diurnal fluctuation based method it is
possible to quantify the evapotranspiration differences between the gap and the
stand.
In two of the remaining stands (Bejcgyertyános and Vép) the gaps were opened in 2010.
The monitoring of soil moisture began in 2013. A mobile sensor is used to monitor
soil-moisture in a regular grid. The spatial variability of soil-moisture time-series shows a
characteristic pattern during the growing-season.
The plot in Sopron was established in 2013. Gaps with three different sizes were
opened and fenced round to close out wild game. The initial status of the gap was
recorded by a terrestrial laser scanner (LIDAR). From the resulting 3D point cloud
high-resolution digital terrain and canopy surface model are derived which will help
the planned numerical modelling. To prevent the unnecessary disturbance in this
plot, two perpendicular transects were selected in each gap. The soil-moisture is
monitored along these lines together with additional investigations, for example
throughfall, and litter interception, tension disc infiltrometry, plant composition and
cover. The microclimatic parameters such as near surface air temperature, relative
humidity, radiation, wind speed and soil temperature is continuously recorded along the
transects and compared to a nearby reference meteorological station located at an open
area.
Acknowledgment: The research was financially supported by the
TÁMOP-4.2.2.A-11/1/KONV-2012-0004 joint EU-national research project |
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