Wyniki wyszukiwania

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Intercepcja opadow sniegu w lesie

100%

Feliksik E., Wilczynski S., Durlo G.

Acta Agraria et Silvestria. Series Silvestris

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2005

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tom 43

55-64

The size of monthly and seasonal total precipitation, measured in the interior of three different forest stands and outside the forest, is analyzed. The measurements were carried out during winters of the period 1970-2002 in the Phytoclimatic Station situated at the height of 720 m above the sea level. The amount of a solid precipitation of a month or of an entire winter season, measured in the open field or in the forest, was very diversified. The average monthly interception of a solid precipitation in the fir-spruce stands amounted to 5-28%, while in the larch stand 15-27%. The highest interception occurred in November (27-28%), while the lowest in February and March (5-15%). In all stands the mean amount of interception of a solid precipitation in the winter season was very similar and it was less than 20%. A similar, and frequently smaller variation of precipitation size in the forest in comparison with the open area, indicates that the forest during the winter period is a regulator which uniformly supplies the soil with water from a solid precipitation.

2

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Wybrane cechy intercepcji opadow atmosferycznych w lanach niektorych roslin uprawnych

100%

Bednarek H., Kolodziej J., Liniewicz K.

Acta Agrophysica

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2000

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tom 34

19-28

Opracowanie oparto na wynikach pomiarów intercepcji opadów atmosferycznych, które wykonywano w latach 1995-1998 na polach ustalonych Obserwatorium Agrometeorologicznego w Felinie Akademii Rolniczej w Lublinie. Do pomiarów intercepcji użyto deszczomierzy w formie rynienek o powierzchni 200 cm2 i wymiarach 4x50 cm w kompletach po 10 przyrządów na poletku doświadczalnym. Pomiary prowadzono na poletkach z pszenicą ozimą, żytem ozimym, jęczmieniem jarym, bobikiem i koniczyną czerwoną. Łącznie zebrano 388 wyników pomiarów. Najwięcej wartości intercepcji stwierdzono w trzech przedziałach klasowych, w zakresie 20-50% - było tam 60,6% całości danych. Maksymalna liczebność - 80 wyników wystąpiła w przedziale klasowym 40-50%, co stanowi 20,6% próby. Średnia wartość intercepcji wahała się od 17,8% (jęczmień jary w 1995 r.) do 52,8% (bobik w 1996 r). Z obliczeń korelacji wynika, że najsilniejsze korelacje dodatnie wystąpiły pomiędzy sumami opadów na wolnej przestrzeni oraz ilością wody pod roślinami oraz pomiędzy opadami na wolnej przestrzeni oraz ilością wody pozostającej na roślinach. W kilku przypadkach stwierdzono ujemne korelacje pomiędzy wysokością opadów na wolnej przestrzeni i wartością intercepcji.

3

Spatial and temporal variability of the interception in the natural wetland valley, the lower Biebrza basin case study

100%

Ignar S., Weglewska A., Szporak-Wasilewska S., Chormanski J.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2013

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tom 45

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nr 1

The paper presents the research carried out in the lower basin of Biebrza River valley in order to identify interception for natural wetland plant communities. Maximum interception, i.e. the largest amount of water, expressed in millimeters, which can be captured and retained by plant canopy from rainfall is one of the key parameters of the water cycle modeling. Maximum interception was determined based on the difference of the masses of wet and dry fresh plant samples. Collection of plant material samples took place during the five measurement sessions, which began immediately after the flood recedes, and then lasted until the end of the growing season. Interception spatial variability was analyzed on the basis of the results of maximum interception measured for selected plant aggregations in the different sampling points. The obtained values were extrapolated to the area of the lower basin of Biebrza River using vegetation map of the Biebrza National Park. By conducting a test sessions in the five coming months, the maps of the spatial variability also show changes over time. Methodology used in the described tests allowed for obtaining of satisfactory results. They present, in a correct way, variation occurring between the plant aggregations due to their morphology. In most cases the results are consistent with data from the literature. As results of the analysis of spatial variability of the maximum interception, the highest values were found for the plant communities located in the immediate vicinity of the river channel. With the increase of the distance from river towards the valley edges the maximum interception values decrease. These changes can be seen in the form of strips parallel to the river channel, which corresponds to the plant zones. Obtained map of spatial variability of the maximum interception, which is the results of extrapolation of the values assigned to plant communities, has a high correlation with the map resulting from the analysis of satellite images.

4

Forestry and water budget of the lowlands in northeast Germany – consequences for the choice of tree species and for forest management

80%

Muller J.

Journal of Water and Land Development

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2009

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nr 13a

5

Methods of estimating the elements of water balance in a forested catchment basin

80%

Osuch B., Gadek W., Homa A., Cebulska M., Szczepanek R., Hebda-Malocha A.

Journal of Water and Land Development

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2009

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nr 13a

6

Evaluation of the 'Mikado' tree training system versus the spindle form in apple trees

80%

Buler Z., Mika A.

Journal of Fruit and Ornamental Plant Research

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2004

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tom 12

7

Weryfikacja wzoru wyrazajacego intercepcje drzew w zaleznosci od natezenia i czasu trwania opadu deszczu, w warunkach eksperymentalnych

71%

Sulinski J., Starzak R., Kucza J.

Acta Agraria et Silvestria. Series Silvestris

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2001

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tom 39

3-16

The interception of simulated rainfall of variable intensity by beech and spruce trees was measured in laboratory conditions. The results of the measurements were employed for verification of an empirically derived formula describing the relationship between interception of rainfall by plants and the size of the interceptive surface and duration of the rainfall. The effectiveness of the formula was confirmed. The usefulness of the methodology developed by us for the further research directed towards refinement of the formula was confirmed, too.

Ograniczanie wyników

Intercepcja opadow sniegu w lesie

Wybrane cechy intercepcji opadow atmosferycznych w lanach niektorych roslin uprawnych

Spatial and temporal variability of the interception in the natural wetland valley, the lower Biebrza basin case study

Forestry and water budget of the lowlands in northeast Germany – consequences for the choice of tree species and for forest management

Methods of estimating the elements of water balance in a forested catchment basin

Evaluation of the 'Mikado' tree training system versus the spindle form in apple trees

Weryfikacja wzoru wyrazajacego intercepcje drzew w zaleznosci od natezenia i czasu trwania opadu deszczu, w warunkach eksperymentalnych