Vízügyi Közlemények, 1987 (69. évfolyam)
4. füzet - Führer Ernő: Lombos és fenyőállományok hatása a hó felhalmozódására és olvadására
574 Führer Ernő Данные о средних и максимальных высотах снежного покрова приведены на рис. 1. Временной ход слоя воды в снежном покрове приведен в таблицах V и VI. Доля суммы талого стока и осадков, выпавших в период снеготаяния без потерь (перехват, перенос ветром) приведены в таблице IV, а средние значения в таблице VII. В заключительной части на основании результатов измерений автором приведено соотношение между запасами воду в снеге во время существования снежного покрова ( JV*) и средней высотой снежного покрова (<?„), на рис. 2. * * * The effect of leafy and coniferous trees on snow accumulation and melting by Dr. E. FÜHRER, forester The Experimental Station of the Scientific Institute for Sylviculture (ERTI) located at the foothills of the Alps in the mountains around the city of Sopron has executed regular snow measurements (thickness, snow-water equivalent) over free areas and on clearings of forests - two times a week - where assets of trees of identical ages (80-90 years) but of different species were available. Average annual precipitation data for 13 years (1972-1985) and some subdivided values for other different periods are shown in Table I Characteristics of the investigated trees are seen in Table II. Variability of snow-thicknesses and snow-water equivalents are characterized by the author by the values of average deviation from the arithmetic mean (in percents), called coefficient of variation (C d and C w ) as presented in Table III. Parameters defining the relation between snow-cover and time (length of snow-covered periods: T„; number of snow-covered days: n; coefficient of endurance of the snow-cover: — 100; number of snow-covered periods: p) are accumulated in Table IV. Average and maximum thickness of the snow-cover are available in Fig. 1. Temporal changes of snow-water equivalence are given in Tables V and VI. Melted sums reduced by losses during melting (interception, deflation) are presented in Table VII. On the basis of measurements the author defined a relationship between the accumulated water resources (£ W* ) in the snow-cover and the average snow thickness (<?„) during the periods when snow-cover existed over the design area (Fig. 2.). * * * Die auswirkung von Laub- und Nadenwaldbeständen auf die Schneeanhäufung und Schneesmelze von Dr. -Forsting. Ernő FÜHRER Die Versuchsstation „Alpenvorland" des Wiessenschaftlichen Forstinstitutes (ERTI) hat im Ödenburger Gebirge, während der vier Winter von 1980 bis 1984 wöchentlich zweimal systematische Messungen der Schneehöhe und des Schneewasseräquivalentes zum Teil in Waldlichtungen, zum Teil aber in unvermischten, etwa gleichaltrigen (80 bis 90 jährigen) baumbeständen verschiedener Arten durchgeführt.
