Temat: powietrze glebowe - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Wstępne wyniki testu aparatury do ciągłego pomiaru stężenia dwutlenku węgla w powietrzu glebowym na stanowisku w Szczawnicy
Results of preliminary test of equipment for continuous measurement of carbon dioxide concentration in soil air in Szczawnica area, Poland
Autorzy:: Tarkowski, R.
Sroczyński, W.
Luboń, K.
Wdowin, M.
Powiązania:: https://bibliotekanauki.pl/articles/1819332.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: dwutlenek węgla
Szczawnica
powietrze glebowe
pomiar
Opis:: This paper presents the results of CO2 concentration in the soil air in attempt to determine the influence of exogenous and endogenous factors on the recorded measurement. The tests were conducted in the area of Szczawnica Spa(S Poland) using an equipment for continuous CO2 measurement, constructed at the Mineral and Energy Eeconomy Research Institute Polish Academy of Science. The device measured and logged the results from 4 points for a 12-month period. The measurements were aimed to answer the following questions: what factors and to what extent determine the spatial and temporal (short- and longterm) variability in the concentration of carbon dioxide in the soil air, and whether the individual measuring points of the Szczawnica measuring station registered any signs of carbon dioxide of endogenous origin. The obtained results allowed the interpretation of seasonal variability of CO2 (in a year-round profile), irregular variations in periods lasting several days, diurnal cycle variability, and others. The results clearly show the dependence of CO2 concentrationon both the season and the weather conditions (especially temperature and precipitation).
Źródło:: Rocznik Ochrona Środowiska; 2012, Tom 14; 930-944
1506-218X
Pojawia się w:: Rocznik Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Effect of Farm Manure Application and NPK Fertilization on Carbon Dioxide Concentration in Soil Air
Wpływ nawożenia obornikiem i NPK na zawartość ditlenku węgla w powietrzu glebowym
Autorzy:: Mazur, Z.
Powiązania:: https://bibliotekanauki.pl/articles/388057.pdf
Data publikacji:: 2009
Wydawca:: Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:: nawożenie
dwutlenek węgla
powietrze glebowe
fertilization
carbon dioxide
soil air
Opis:: The results of measurements of carbon dioxide concentration in soil air under conditions of an exact field experiment are presented. Compared with CO2 content in the control plot, manure application combined with NPK fertilization caused an increase in CO2 levels by 0.06 % and 0.04 % by volume, while manure application alone - by only 0.02 %. Measurements were performed for 12 weeks, from the end of June to the middle of September 1999. Throughout that period, average CO2 concentration decreased in all treatments, from 0.62 % to 0.16 % by volume.
W pracy zamieszczono wyniki oznaczenia stężenia ditlenku węgla w powietrzu glebowym w warunkach ścisłego doświadczenia polowego. W stosunku do zawartości CO2 w powietrzu glebowym w obiekcie kontrolnym, nawożenie obornikiem i NPK spowodowało wzrost stężenia CO2 o 0,06 % i 0,04 % obj., a samym obornikiem tylko o 0,02 %. Pomiary prowadzono przez 12 tygodni od końca czerwca do potowy września. W ciągu tego okresu średnia zawartość CO2 z wszystkich obiektów zmniejszyła się z 0,62 % do 0,16 % objętości.
Źródło:: Ecological Chemistry and Engineering. A; 2009, 16, 10; 1345-1349
1898-6188
2084-4530
Pojawia się w:: Ecological Chemistry and Engineering. A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Udzial mieszanki traw w procesie respiracji gleby [Eutric Histosol] nawadnianej sciekami miejskimi po II stopniu oczyszczenia
The share of mixed grasses in soil respiration after irrigation of water (after II step of purification)
Autorzy:: Stepniewska, Z
Pasztelan, M.
Kotowska, U.
Powiązania:: https://bibliotekanauki.pl/articles/1401790.pdf
Data publikacji:: 2000
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: gleby
gleby torfowo-murszowe
powietrze glebowe
respiracja
nawadnianie gleby
mieszanki traw
potencjal wzrostu
scieki komunalne
soil
grass mixture
peat-muck soil
soil air
soil respiration
irrigation
growth potential
municipal waste
Opis:: Badania prowadzono w warunkach polowych na glebie torfowo-murszowej (Eutric Histosol) nawadnianej ściekami po drugim stopniu oczyszczania. Pole doświadczalne porośnięte było mieszanką traw odpowiednio dobranych gatunków gdzie w okresie wegetacji stosowano dwie dawki ścieków odpowiednio 600 i 1200 mm rocznie. Ścieki wprowadzano na pole w jednorazowej dawce odpowiednio: 60 i 120 mm. Badania obejmowały analizę C02 emitowanego z powierzchni gleby bez udziału i z udziałem wybranych roślin. Celem zaś pracy było prześledzenie procesu respiracji gleb w zastosowanych obiektach doświadczenia. Do pomiarów emisji wykorzystano zestawy metalowych podstaw i przezroczystych komór instalowanych po rozpoczęciu nawodnień. Skład powietrza pobranego z punktów pomiarowych do odpowietrzonych fiolek oznaczano chromatograficznie. Równocześnie oznaczano w glebie na głębokościach od 10-100 cm potencjał oksydoredukcyjny (Eh) elektrodami platynowymi na stałe umieszczonymi w profilu glebowym wobec elektrody kalomelowej. Stan oksydoredukcyjny podczas trwania cyklu zalewowego, od momentu wprowadzenia ścieków do ich przemieszczenia w głąb profilu, był cechą charakteryzującą dobrze stan natlenienia gleby. Obecność traw na polu irygowanym ściekami miejskimi spowodowała zmniejszenie emisji C02 z powierzchni o ok. 25% w porównaniu z glebą bez udziału roślin.
Investigation was carried out under field conditions with organic soil (Eutric Histosol) irrigated with municipal wastewater after second step of purification. Experimental field was covered with mixed grass. Wastewater was added 10 times a year with the dose 60 and 120mm. Investigations comprised gas emission from the surface of soil covered with plants and with out them. The main objective of this paper was to investigate process of respiration of soil under different experimental treatments. Measurements of gas emission were performed with the use of metal cylinders as a basement and plexiglas chamber installed after irritations. Composition of air, taken up from plexiglas chambers to vacuum containers, was analysed by gas chromatographic technique. Paralelly in the soil profiles on 10-100 cm depth redox potential (Eh) was measured by permanently installed platinum electrodes with respect to calomel electrodes as a reference. Soil redox potential, during irrigated cycle, from the initial movement of waste added to their migration through soil profile gives good soil aeration characteristics. CO2 emission from the surface of soil covered with mixed grass was 25% lower than from the soil with out plants.
Źródło:: Acta Agrophysica; 2000, 38; 193-199
1234-4125
Pojawia się w:: Acta Agrophysica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Wplyw zlokalizowanego stresu tlenowego w glebie na rozwoj korzeni i czesci nadziemnych kukurydzy [ modelowe badania rizotronowe ]
Effect of localized soil oxygen stress on root and shoot development in maize ( a model rhizotrone study)
Autorzy:: Bennicelli, R P
Powiązania:: https://bibliotekanauki.pl/articles/1628361.pdf
Data publikacji:: 1994
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: agrofizyka
gleby
kukurydza
system korzeniowy
wzrost roslin
badania modelowe
badania rizotronowe
dynamika rozwoju
powietrze glebowe
aeracja
stres tlenowy
agrophysics
soil
maize
root system
plant growth
model research
development dynamics
soil air
aeration
oxygen stress
Opis:: The aim of the study was to test the usefulness of split rhizotrone technique to investigate the effect of localized soil anoxia on root and shoot developement, using maize as a test plant. The experiment was performed in 6 split rhizotrons enabling differentiation of soil aeration status in each half of the rhizotron by blowing nitrogen or air through them. The rhizotrone consists of two parts (each 16.6 dm3 in volume) inclined with an angle 60°. Each part is constructed of 1 mm thick stainless steel plate with a glass inner wall for root observation and has dimensions 84 cm x 40.5 cm x 5.0 cm. The rhizotrons were filled in with a brown loess soil material (Eutric Camhisol) from Ap horizon (from Eli/6wka, near Lublin). Maize seedlings with the roots splitted between the rhizotrone halves (eukivars KLG 2210 and DEA) were used in the experiments. Until the stress period the soil moisture tension of 20-80 kPa provided good water and air conditions. At a stage of 8 leaves three treatments were applied for a period of 7 days; an oxic control (P/P), a localized anoxia with 50% of the roots in nitrogen treated part (P/A), and a complete anoxia (A/A) with gas nitrogen in both parts. During the stress period diurnal elongation rates of primary roots (by marking positions of the tips each day) as well as distribution of two indicators of soil oxygenation status with depth viz. of oxygen diffusion rate (ODR) and of redox potential (Eh) in soil were measured. Shoot elongation rates were monitored with a potentiometer attached to the youngest leaf. Microscopic photographs of cross- sections of the caps and of apical meristems of primary roots at 400 magnification were made to show the changes in their anatomy due to anoxia. Chemical analysis of the shoots was performed after the stress period. For each cultivar the experiment was repeated three times. The investigations performed allowed the following conclusions to be drown out: 1. The split rhizotrone was shown to be a useful technique to study behaviour of the primary maize roots under localized anoxia conditions. 2. The ODR and Eh distribution with depth showed deterioration of oxygenation status (drop of ODR from control values above 100 |µg m-2 s-1 to the level 30 µg m-2 s-1, decrease of Eh from control values above 550 mV to the level, 300 mV) due to replacement of the soil air with gaseous nitrogen. 3. Root elongation rates under anoxic conditions (both under complete - A/A, and localized - A/P anoxia) were on the level of about 50% of the controle (P/P) during first 4 days and decreased practically to zero by the end of the stress period. In turn, the oxic part of the rhizotrone combined with localized anoxia treatment of the same plant (P/A) exhibited compensation effect and was characterized by stimulation of the root elongation rate up to 80%. This effect was especially distinct after 2-5 days of the stress duration and then tended to decrease. 4Distribution of the root mass in depth under anoxic treatments was characterized by concentration of about 80% of the root mass within first 10 cm of the soil. 5.Microscopic photographs of the root tips showed, under anoxic conditions, shorter meristematic zone, smaller number of mitosis, beginning of aerenchyma formation and dying of the cells at a distance of 1 mm from the root cap. 6.The shoots responded to applying anoxia to both rhizotrone parts by 20% reduction of the growth rate. 7.Both root and shoot elongation rates were correlated also with the temperature. 8.Oxygen deficiency in soil resulted in an increase of exchangeable manganese, what was reflected by its increased concentration in the maize shoots.
Źródło:: Acta Agrophysica; 1994, 03; 3-72
1234-4125
Pojawia się w:: Acta Agrophysica
Dostawca treści:: Biblioteka Nauki