Wyniki wyszukiwania

1

Water conductivity of mineral-moorsh soil aggregates

100%

Witkowska-Walczak B.

Polish Journal of Soil Science

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2005

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tom 38

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nr 1

1-10

The paper presents the results of a study on the effect of the size of mineral-moorsh soil aggregates on water conductivity in the saturated and unsaturated zone. It was found that water conductivity coefficients in the saturated zone of mineral-moorsh soil increase with the size of aggregates. The water conductivity coefficients in the unsaturated zone decrease with the size of aggregates from 0.9 10² cm day⁻¹ at pF 0.4 to 0.3 10⁻⁵ cm day⁻¹ for pF 4.2 for aggregates less than 0.25 mm, and for aggregates of 5-10 mm – from 4 cm day⁻¹ at pF 0.4 to 0.8 10⁻⁹ at pF 4.2. Water conductivity coefficients in the unsaturated zone increase with increasing water content and this increase is especially notable between 8 and 22% vol. and above 40% vol. of moisture for all investigated aggregates.

2

Nutrient use in selected European countries

100%

Fotyma M., Kopinski J., Breitschuh G., Danneberg O., Stana J., Csatho P., Torma S.

Nawozy i Nawożenie

|

2000

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tom 02

|

nr 3b

3

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Comparison of surface soil moisture from SMOS satellite and ground measurements

100%

Usowicz B., Marczewski W., Usowicz J. B., Lukowski M. I., Lipiec J.

International Agrophysics

|

2014

|

tom 28

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nr 3

Soil moisture datasets at various scales are needed for sustainable land use and water management. The aim of this study was to compare soil moisture ocean salinity satellite and in situ soil moisture data for the Podlasie and Polesie regions in Eastern Poland. Both regions have similar climatic and topo- graphic conditions but are different in land use, vegetation, and soil cover. The test sites were located on agricultural fields on sandy soils and natural vegetation on marshy soils that prevail in the Podlasie and Polesie regions, respectively. The soil moisture ocean salinity soil moisture data were obtained from radiometric measurements (1.4 GHz) and the ground soil moisture from sensors at a depth of 5 cm during the years 2010-2011. In general, temporal patterns of soil moisture from both satellite and ground measurements followed the rainfall trend. The regression coeffi- cients, Bland-Altman analysis, concordance correlation coefficient, and total deviation index showed that the agreement between ground and soil moisture ocean salinity derived soil moisture data is better for the Podlasie than the Polesie region. The lower agre- ement in Polesie was attributed mostly to the presence of the widespread natural vegetation on the wetter marsh soil along with minor contribution of agriculturally used drier coarse-textured soils.

4

Soil tillage effects on soybean canopy resistance

100%

Lo Cascio B., Casa R.

Bibliotheca Fragmenta Agronomica

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1997

|

tom 2A

5

The effect of macroarthropods patrolling soil surface on soil nematodes: a field experiment in a mown meadow

100%

Wasilewska L.

Polish Journal of Ecology

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2000

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tom 48

|

nr 4

6

Effect of the laser exposure of seeds on the yield and chemical composition of sugar beet roots

100%

Koper R., Wojcik S., Kornas-Czuczwar B., Bojarska U.

International Agrophysics

|

1996

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tom 10

|

nr 2

7

Prerequisites for mechanical shaping of the soil surface in glasshouses

100%

Mihov M., Dimitrov P., Toskov K.

Vegetable Crops Research Bulletin

|

2003

|

tom 58

8

Evaluation of residue removers under no-till conditions in Western-Europe

100%

Rump B., Koller K.

Bibliotheca Fragmenta Agronomica

|

1997

|

tom 2B

9

The amount of elements reached upper soil layer in beech stands in the Ojcow National Park in 1997 and 1998

100%

Malek S., Wezyk P.

Ochrona Środowiska i Zasobów Naturalnych

|

1999

|

tom 18

10

Inferring soil surface roughness from soil bidirectional reflectance data

100%

Cierniewski J., Verbrugghe M.

International Agrophysics

|

1997

|

tom 11

|

nr 3

11

Cryoexpulsion et cryoreptation en milieu limono-argileux. Experimentation en laboratoire

100%

Coutard J. P., Van Vliet-Lanoe B.

Biuletyn Peryglacjalny

|

1994

|

tom 33

12

Effect of macroarthropods patrolling soil surface on decomposition rate of grass litter [Dactylis glomerata] in a field experiment

100%

Szanser M.

Polish Journal of Ecology

|

2000

|

tom 48

|

nr 4

13

Excystment-inducing factors in the ciliated protozoan Colpoda cucullus: hydrophobic peptides are involved in excystment induction

100%

Akematsu T., Matsuoka T.

Acta Protozoologica

|

2007

|

tom 46

|

nr 1

14

Directional character of soil surface reflectance in the visible and near-infrared range

100%

Cierniewski J., Verbrugghe M., Bialousz S., Chmiel J.

International Agrophysics

|

1995

|

tom 09

|

nr 2

15

Investigation of picking device oscillating motion in flax harvesting assembly

84%

Bulgakov V., Horbovyi A., Holovach I.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

|

2003

|

tom 03

16

The influence of forest stand and organic horizon development on soil surface measurement of magnetic susceptibility

84%

Zawadzki J., Fabijanczyk P., Magiera T.

Polish Journal of Soil Science

|

2007

|

tom 40

|

nr 2

113-124

Topsoil magnetic susceptibility measurements (κ) are used for the fast and effective assessment of soil pollution by heavy metals, the result of industrial and urban dust deposition. Those areas with a high content of anthropogenic magnetic particles in the soil, which as a result exhibits enhanced topsoil magnetic susceptibility, are areas potentially contaminated with heavy metals. While taking the measurements and during further data interpretation it is important to include some additional sampling factors that can influence the measured value. The aim of this study wasto verify the hypothesis of the influence of a forest stand on the magnetic signal measured in forest topsoil, as well as the influence of the thickness of the organic layer on the surface κ measurement. The study was based on data from 830 regional measurements. Furthermore, 620 values measured at a local site were used to validate the results obtained using the regional data set. The results showed that soil surface magnetic susceptibility measured in deciduous forests and in deciduous with coniferous admixtures was statistically higher than those measured in coniferous forests. The data also revealed that thick organic horizon slightly decrease the κ valuemeasured on the soil surface. However, there is no direct relationship between the measured κ valuesand the occurrence of a tree stand, instead there is a more complex influx of natural (pedological,geological) and methodological (measurement preferences) features.

17

Water repellency of mountain forest soils in relation to impact of the katabatic windstorm and subsequent management practices

84%

Simkovic I., Dlapa P., Simonovicova A., Ziegler W.

Polish Journal of Environmental Studies

|

2009

|

tom 18

|

nr 3

443-454

Even though massive winds are significant disturbing factors for forest ecosystems, studies assessing topsoil properties in relation to wind-induced changes in forest floor and, specifically, works dealing with soil water repellency are lacking. On the other hand, the majority of works aimed at the wettability of soil have been carried out on soils from arid or semiarid climatic regions. Besides that, much less attention has been dedicated to soil water repellency in boreal-temperate regions and mountainous areas in particular. Here we report on water repellency of topsoil in mountainous region of the High Tatras of northern Slovakia (central Europe), where katabatic windstorm have blown down app. 12,500 hectares of forest canopy. Different management practices applied on windblown areas together with fire impact have resulted in four types of sites in the area: harvested, reference, left on self-recovery and struck by wild-fire. In order to cover the diversity of topsoil conditions, samples were taken at four representative sites. Results of WDPT and MED measurements show that a great portion of samples exhibited considerable degree of water repellency. It was found that there are significant differences in actual water repellency and field water contents between particular groups of samples taken at individual sites. Results of multiple regression analysis showed that water repellence of topsoil material is significantly controlled by water and organic carbon contents. Besides, for fire-unaffected soils it was found that the degree of water repellence is closely related to detected values of soil reaction as well. Explained portions of WDPT and MED variances ranged from 45 up to 72%.

18

'Hot spots' on a new soil surface - how do testate amoebae settle down?

84%

Wanner M., Elmer M.

Acta Protozoologica

|

2009

|

tom 48

|

nr 3

281-289

19

Analysis of soil surface damage due to mechanised thinning operations in pine stands

84%

Hoffman L., Mederski P. S., Bembenek M., Jakubowski M.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa

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2005

|

tom 91

161-166

20

Concentration of polycyclic aromatic hydrocarbons in surface horizons of soils in immediate neighbourhood of illegal waste dumps

84%

Kaszubkiewicz J., Kawalko D., Perlak Z.

Polish Journal of Environmental Studies

|

2010

|

tom 19

|

nr 1

73-82

The objective of the study was to determine the concentration of polycyclic aromatic hydrocarbons in soils in the immediate neighbourhood of illegal waste dumps and to determine the mutual relations among the particular PAHs as well as the relations between PAH and humus of a group of soils with natural and anthropogenically increased content of those compounds. Soil samples for the determinations were taken in the immediate neighbourhood of illegal dumping grounds of municipal wastes and materials that are predominantly construction materials. The collected soil material was used to determine the grain size composition of the soils, their reaction, content of organic matter and of polycyclic aromatic hydrocarbons with the method of high-efficiency liquid chromatography with fluorescence detection. The study revealed numerous instances of exceeding standard levels of individual PAHs as well as of their total content. Application of statistical analysis of concentrations permitted the division of the objects studied into two groups differing notably in the level of individual PAHs as well as in their total concentration. In the group of objects that were classified as non-contaminated, the existence of positive, statistically significant correlation was found between the total concentration of PAHs and the content of humus compounds, while in the group of contaminated objects the correlation was statistically non-significant.

Ograniczanie wyników

Water conductivity of mineral-moorsh soil aggregates

Nutrient use in selected European countries

Comparison of surface soil moisture from SMOS satellite and ground measurements

Soil tillage effects on soybean canopy resistance