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Wyświetlanie 1-3 z 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, 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
Tytuł:
Zależność emisji CO2 z gleby od warunków atmosferycznych w podokresach zmienności respiracji gleby
The dependence of soil CO2 fluxes on atmospheric conditions during sub-periods of soil respiration
Autorzy:
Wroński, K.T.
Powiązania:
https://bibliotekanauki.pl/articles/1311019.pdf
Data publikacji:
2015
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
gleboznawstwo
gleby
respiracja
emisja gazow
dwutlenek wegla
czynniki atmosferyczne
temperatura powietrza
wilgotnosc wzgledna
opady atmosferyczne
soil respiration
carbon dioxide
temperature
histeresis
Opis:
Soil respiration was measured on rusty soil in a dry forest near Łódź. A two-year series of soil respiration was divided into characteristic sub-periods and relationships between CO2 emission from the soil as well as selected aspectsof climatic conditios were examined. The temperaturedependence of CO2 fluxes from the soil is linear from March to June and expotential duringthe period from June to March. Dividing the year into aphase of growth and a phase of decline and modeling soil respiration for each of these sub-periods separately does not significantly improve the accuracy of the model. The studies have also shownthat soil respiration responds with a delay of three days to changes in temperature and relative moisture,but with a 17-day delay to changes in precipitation.
Źródło:
Leśne Prace Badawcze; 2015, 76, 2; 129-143
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany w składzie chemicznym gleby leśnej i porolnej po wprowadzeniu trocin iglastych na tle przebiegu elementów pogody
Chemical composition of soils on post-agricultural and forest sites before and after sawdust addition against the background of weather elements
Autorzy:
Małecka, M.
Wójcik, J.
Sierota, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1317240.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
chemia srodowiska
gleby porolne
gleby lesne
sklad chemiczny
odczyn gleby
stosunek wegla do azotu
zawartosc wapnia
zawartosc magnezu
zawartosc potasu
zawartosc fosforu
zawartosc azotu
zawartosc wegla
dodatki do gleb
trociny iglaste
zmiany skladu chemicznego
czynniki meteorologiczne
opady atmosferyczne
temperatura powietrza
temperatura gleb
chemical composition
fallow soil
forest soil
sawdust
weather parameters
Opis:
We analysed changes in soil chemical properties (pH, C:N, N, P, K, Ca, Na) inside two forest areas chosen for renewal (Lubartów A and B) and within one post-agricultural site (OEwierczyna) designated for afforestation with Scots pine. The experimental plots were located in areas known as persistent cockchafer grub spots. The Lubartów A site was not fenced and showed signs of wild boar activity. Analyses were carried out in the autumn of 2011 and spring 2012, prior to pine sawdust application to the soil and before tree planting, respectively, and again one year later in May 2013. Precipitation as well as air and soil temperatures were recorded throughout the experimental period. We found that soil temperature and humidity, determined by changes in weather, differences in soil chemical properties between forest and agricultural sites as well as sawdust treatments differentially affected soil reaction, C:N ratios and nutrient content . In the unfenced area (Lubartów A), the content of nutrient forms available to plants decreased no more under sawdust treatment than under control conditions. In the remaining areas, sawdust treatment caused an increase or no change in soil concentrations of the investigated nutrients. Under suitable temperature and humidity conditions, sawdust can represent a significant source of energy-rich compounds promoting diversified edaphone activity, which appears to be the main reason for changes in soil nutrient content.
Źródło:
Leśne Prace Badawcze; 2014, 75, 2; 139-148
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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