Original scientific paper
MODELLING OF CLIMATIC VARIABLES AS PART OF A DENDROECOLOGICAL STUDY IN THE REPAŠ FOREST, PREKODRAVLJE, CROATIA
Oleg Antonić
; Ruđer Bošković Institute P.O. Box 1016, 10001 Zagreb, Croatia
Antun Marki
; Andrija Mohorovičić Geophysical Institute, Faculty of Science, University of Zagreb, Horvatovac bb, 10000 Zagreb, Croatia
Dalibor Hatić
; Oikon Ltd. Vlade Prekrata 20, 10000 Zagreb, Croatia
Abstract
In this paper the preparation of climatic data for the purpose of a dendroecological study in the Repaš forest (Prekodravlje, Croatia) near Đurđevac is presented. The study was part of the research work done for future hydroelectric power plant 'Novo Virje' on the river Drava. As the necessary climatic indicators were not measured in the Repaš forest, data from the nearest Đurđevac meteorological station for the period 1960-1997 were used (air temperature and precipitation were directly measured, and potential evapotranspiration and solar irradiation were modelled). These data were extrapolated backward to the year 1899 by the method of general linear modelling and using the secular
data series of the Zagreb-Grič and Osijek meteorological stations. Additionally, the precipitation data were corrected on the basis of data (1987-1991) from the Gola station, which is the nearest to the Repaš forest. A dendroecological analysis of the correlation between the radial increment of a selected pedunculate oak tree in the Repaš forest and the described climatic variables is presented, using multiple linear regression. The climatic variables significantly
influenced the radial increment of the observed tree (correlation coefficient 0.664) in the period 1899-1997.
Keywords
air temperature; solar irradiation; potential evapotranspiration; precipitation; dendrochronology; general linear modelling; pedunculate oak
Hrčak ID:
67572
URI
Publication date:
16.12.1999.
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