Study presents measurements, comparation and analysis of intercepted precipitation of
coniferous and deciduous trees. Measurements were made on experimental plot in the urban
part of the city Ljubljana on two groups of trees: Betula pendula and Pinus sylvestris.
Analyses and comparations of throughfall and stemflow were made for the period from June
2004 till December 2006 which was devided onto four vegetation periods. Rainfall above the
canopy was measured automatically with a tipping bucket rain gauge with digital recording of
results every 10 minutes in combination with manual Helman's rain gauge for control.
Throughfall was measured using a combination of fixed gauges with digital recording of
results every 10 minutes and manual roving gauges. Stemflow was measured manually on one
tree of each specie. The results of the measurements showed that the throughfall for Betula
pendula was 57-70 % of precipitation and for Pinus sylvestris 35-49 % which is comparable
with the results of other similar studies around the world. The stemflow fraction for Betula
pendula amounted 1,1-6,7 % of precipitation and it was practically negligible for Pinus
sylvestris.
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