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Wyszukujesz frazę "pojemność wodna" wg kryterium: Temat


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Tytuł:
Przestrzenno-czasowe zróżnicowanie pojemności wodnej koron drzew leśnych na przykładzie buka zwyczajnego
Spatio-temporal variability of water storage capacity in forest canopies of European beech
Autorzy:
Klamerus-Iwan, A.
Szymański, W.
Powiązania:
https://bibliotekanauki.pl/articles/988987.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewa lesne
intercepcja
buk zwyczajny
Fagus sylvatica
korony drzew
pojemnosc wodna
opady atmosferyczne
opad podkoronowy
metody badan
metody geostatystyczne
throughfall
interception
stemflow
fagus sylvatica
Opis:
The study presents plant interception understood as a process of retaining rainfall over the entire surface of the plant. The objective was to collect and prepare data presenting changes in the amount of rainwater reaching the forest floor, and to inference on the diversity of water capacity within canopy of a single tree. A characteristic feature of an interceptive tank is the lack of tightness, which provides the possibility for the determination of horizontal distribution of water that reaches the forest floor. The amount of throughfall depends on direct rainfall and humidity, while its spatial distribution depends on the structure and species composition, the shape of crowns, the degree of compaction of foliage in the crowns and the distance from the tree trunk. Increase in rainfall was reported at specified time points, which, in combination with the distribution of rain gauges in the square grid, provided spatio−temporal image describing changes of water capacity of the treetops. Single tree and biogroups influence the specific mosaic of soil properties that change even on a small scale. This kind of interaction is somewhat important for the stand regeneration. The studies were carried out in Węgierska Górka Forest District (southern Poland). Changes in the amount of rainwater reaching the forest floor after successive time points during 47 individual rainfall events were controlled. Spatio−temporal distribution of rainfall was related to the distance from the trunk, but primarily to the construction of the treetop. As a result, the graphic interpolation of spatial data describing the amount of water retained in the treetop after a single rainfall was provided. The distance from the trunk, the branch system and construction of the treetop significantly affected the amount of water reaching the forest floor. The morphology of the treetop and root system, as well as the characteristics of beech trunk are causes, and simultaneously, consequences of penetration of rainfall into the forest floor that is characteristic for this species. The increasing attention is paid to determine the spatial variability of studied phenomena, which is a kind of physical−mathematical model, which takes into account the local variation of the analyzed traits.
Źródło:
Sylwan; 2017, 161, 02; 142-148
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametry opadu deszczu wpływające na pojemność wodną korony drzew w warunkach kontrolowanych
Rainfall parameters affect canopy storage capacity under controlled conditions
Autorzy:
Klamerus-Iwan, A.
Powiązania:
https://bibliotekanauki.pl/articles/1313194.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
drzewa lesne
intercepcja
badania laboratoryjne
deszcze
opady symulowane
intensywnosc opadow
wielkosc kropel
korony drzew
pojemnosc wodna
pomiary laboratoryjne
area of trees
interception tank
mock trees
rainfall intensity
size of raindrops
sprinkler set
Opis:
The subject of this research was the interception of precipitation, which is defined as the amount of water that can be retained by the entire surface of a tree. The aim was to measure the rate of interception under laboratory conditions in order to determine influential factors. To eliminate water absorption that would occur in living trees, we employed models of deciduous and coniferous trees enabling us to examine the effect of precipitation characteristics and the surface area individually. A sprinkler system that automatically recorded the amounts of water retained on the models was set up in the laboratory. Precipitation was simulated using 5 different intensities with 3 different raindrop sizes. Interception rates were affected by both, the intensity of the precipitation and raindrop size. The time required to reach maximum crown filling with water was variable and depended on plant surface parameters as well as simulated precipitation. The maximum water capacity of crowns was not a constant value even within one tree model, but changed depending on precipitation characteristics.
Źródło:
Leśne Prace Badawcze; 2014, 75, 4; 353-358
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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