Temat: raindrops - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: New approach to estimate the shear stress and the force of raindrops and their effect on erodibility of agricultural soils
Autorzy:: Moussouni, A.
Bouhadef, M.
Mouzai, L.
Tematy:: erosive force
raindrops
rainfall simulator
shear stress
soil erodibility; Pokaż więcej
Wydawca:: Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Powiązania:: https://bibliotekanauki.pl/articles/971607.pdf Link otwiera się w nowym oknie
Opis:: The objective of this work was to the study the erosive force of raindrops and the shear stress on the soil erodibility of disturbed and saturated agricultural soil. A mathematical development was used to determine a new approach to the shear stress. The soil erodibility is calculated using the WEPP (water erosion prediction project) model. To realize this work, an experimental study was led in a laboratory using the rainfall simulator. The soil tray used in this study has a length of 2 m, width of 50 cm and a depth of 15 cm and the slope was adjusted with a system. The soils used were sandy and silty agricultural soils. The results show that the relationship between the erosive force of raindrops and the shear stress on the soil erodibility increased respectively as a power and linear function with an important coeffiient of determination. As regards the relationships between soil erodibility and the mean raindrop diameter, the evolution is represented by a power function with high coeffiient of determination.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Different views on tree interception process and its determinants
Autorzy:: Klamerus-Iwan, Anna
Wydawca:: Instytut Badawczy Leśnictwa
Opis:: Przemysław Szmit
The subject of the study is the process of interception by plants defined as the process of retaining rainfall water on plant surface, counting retention by individual plant parts or the vegetation cover as the whole. In the quantitative approach, interception capability of plants may be compared to a reservoir, the capacity of which is determined mostly by the surface of plants. Among many approaches to describe interception processes, a lot of attention has been focused on research concerning the forest vegetation with reference to atmosphere – forest stand – soil balance. Hence, in the present paper interception issues are addressed in view of forest ecosystems. The emphasis is also put on the methods and results of studies carried out under laboratory conditions. . Up-to-date literature on interception is abundant. The authors tackling this issue regularly define their own variable and complex sets of terms. This paper is an attempt to review and organize knowledge presented in existing literature on the subject.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 3.

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, Anna
Wydawca:: Instytut Badawczy Leśnictwa (Forest Research Institute), Sekocin Stary, Poland
Opis:: This study was completed, thanks to support of Ministry of Science and Higher Education within promoter grant No. N N309298234.
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.
Przemysław Szmit
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 4.

Tytuł:: Laboratory determination of potential interception of young deciduous trees during low-intense precipitation
Autorzy:: Klamerus-Iwan, Anna
Sporysz, Maciej
Wydawca:: Instytut Badawczy Leśnictwa
Opis:: The research issue focuses on potential interception, which is the maximum amount of water that can be stored on plant surface. Tests under controlled conditions remain the best way to enhance knowledge on interception determinants in forest communities. Such tests can provide data for identification of mathematical models based on ecological criteria. The study presented in this paper concerned tree interception under simulated rain in a range from 2 to 11 mm/h. To perform the experiment a set of sprinklers was designed and built. The study included two deciduous species: beech (Fagus sylvatica L.) and oak (Quercus robur L.). Descriptive characteristic and nonlinear estimation were suggested for the obtained data. Interdependence of potential interception, the intensity of rain and the size of raindrops were described using exponential equation. The intensity and drop size of simulated rainfall significantly influence the obtained values of potential interception. Data analysis shows a decrease of interception value with an increase of intensity of simulated rainfall for both analysed species. Every run of the experiment that differed in the intensity and size of raindrops reached an individual level of potential interception and time needed to realize it. The formation of ability of plants to intercept water depends both on the dynamics and the time of spraying.
Przemysław Szmit
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 5.

Tytuł:: Różne spojrzenia na proces intercepcji drzew i jego determinanty
Different views on tree interception process and its determinants
Autorzy:: Klamerus-Iwan, A.
Tematy:: lesnictwo
ekosystemy lesne
bilans wodny
drzewa lesne
korony drzew
intercepcja
deszcze
intensywnosc opadow
wielkosc kropel
forest water balance
canopy storage capacity
rainfall intensity
size of raindrops; Pokaż więcej
Wydawca:: Instytut Badawczy Leśnictwa
Powiązania:: https://bibliotekanauki.pl/articles/1312736.pdf Link otwiera się w nowym oknie
Opis:: The subject of the study is the process of interception by plants defined as the process of retaining rainfall water on plant surface, counting retention by individual plant parts or the vegetation cover as the whole. In the quantitative approach, interception capability of plants may be compared to a reservoir, the capacity of which is determined mostly by the surface of plants. Among many approaches to describe interception processes, a lot of attention has been focused on research concerning the forest vegetation with reference to atmosphere – forest stand – soil balance. Hence, in the present paper interception issues are addressed in view of forest ecosystems. The emphasis is also put on the methods and results of studies carried out under laboratory conditions. Up-to-date literature on interception is abundant. The authors tackling this issue regularly define their own variable and complex sets of terms. This paper is an attempt to review and organize knowledge presented in existing literature on the subject.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

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.
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; Pokaż więcej
Wydawca:: Instytut Badawczy Leśnictwa
Powiązania:: https://bibliotekanauki.pl/articles/1313194.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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