The process of penetration of rainwater from the atmosphere into the pedosphere consists of a multitude of transitional elements. One of them is the forest ecosystem. Variation in the amounts of water reaching the forest floor depends primarily on the size and construction of tree crowns (canopies), but also on the distance from the trunk. The ability to temporarily catch the rainwater is called interception. In the field, measurement of the interception, due to the methodological and technical complication is a difficult task to perform.The aim of the present study was to construct an apparatus for measuring the amount of water reaching under the crowns of trees, precise calibration and testing accuracy of methodology. 16 measuring devices were set under the crown of each of the trees included in the study, the 1th apparatus was modified to test the rainwater runoff on the trunk, while the 18th measured rainfall outside the beech stand. Increases in precipitation were recorded at certain intervals, which in turn provided a spatial-temporal image of the water storage capacity of tree canopies. For the realization of this stage, rain gauges containing overflow cylinders were prepared. The counter counted the number of tilts ...
In field conditions, direct measurement of plant interception is still a difficult task, especially because of methodological limitations and also that of technical and organizational nature. [Olszewski, 1984, Kossowska-Cezak et al., 2000].The way to deepen the knowledge about the determinants of interception in forest areas is research in controlled conditions [Anzhini et al,. 2007], which could provide the data for the identification of the mathematical models. Pei et al. [1993] performed a laboratory simulation of precipitation on a set tree surface by changing the intensity of the rain ten times in the range of 47.4 to 147.6 mm/h. Similarly, Keim et al. [2006] applied a rate of 20 to 420 mm/h by changing the droplet size of the simulated precipitation from 1.0 to 2.8 mm. These amounts of precipitation are not likely to occur in the Polish climate. The essence of the research was to spray trees with simulated rain with certain characteristics, according to the methodology previously developed and tested on mockups.To carry out the research on trees interception of simulated rain in the range of 2 to 11 mm/h autors had to design and build a sprinkler device [Klamerus - Iwan et al., 2013] taking into ...
The object of the research is interception container which is created by the surface of pine. Surface of trees is the greatest extent varies the potential intercep-tion altitude - the maximum possible amount of water that a tree can catch after a single rain.For precise ibterception studies in the lablratory conditions only to determinate the LAI coefficient was not enough. The aim of study was to determinate interception surface of tree based on digitized images of needles and branches using SigmaScan 5.0 Pro. Two methods were used to obtain images of needles - using scanner and a camera. The results and proposed methodology of measurement allowed to calculate the interception container of a single tree. ...
