Wyniki wyszukiwania

1

Concentration of nutrients in the soil in water-level-fluctuating zone of Three Gorges Reservoir

100%

Zhang B., Guo J.-S., Fang F., Li Z., Fu C.

International Journal of Ecohydrology and Hydrobiology

|

2012

|

tom 12

|

nr 2

2

Determination of heavy metal contamination in roadside surface soil by sequential extraction

84%

Isen H., Altundag H., Keskin C. S.

Polish Journal of Environmental Studies

|

2013

|

tom 22

|

nr 5

This paper investigated concentrations of heavy metals in roadside surface soil samples collected from the D-100 highway in Sakarya, Turkey. The sequential extraction procedure has been applied to 24 soil surface samples and heavy metals concentrations (Ba, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Sr, V, and Zn) determined by ICP-OES. The three-step BCR sequential extraction procedure was used in order to evaluate mobility, availability, and persistence of trace elements in roadside surface soil samples. Validation of the analytical results was checked by analysis of the BCR-701 certified reference material. The results showed good agreement between the obtained and the certified values for the heavy metals analyzed. The results show that Zn (229 µg/g), Pb (227 µg/g), Mn (129 µg/g), Fe (113 µg/g), and Cr (101 µg/g) are the most contaminated heavy metals in roadside surface soil samples.

3

Surface soil moisture. Satellite and ground-based measurements

84%

Lukowski M., Usowicz B.

Acta Agrophysica. Monographiae

|

2014

|

nr 1

4

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Copper speciation in soils contaminated with metal-bearing dusts

67%

Mocek A., Owczarzak W.

Acta Agrophysica

|

2001

|

tom 56

5

Wplyw zroznicowanej glebokosci uprawy roli na plonowanie buraka pastewnego

59%

Urbanowski S., Piekarczyk M.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

|

1997

|

nr 202

75-79

6

Effect of spontaneous succession on physical state of post-mine technosol

59%

Kolodziej B., Bryk M., Slowinska-Jurkiewicz A., Otremba K., Gilewska M.

Acta Agrophysica

|

2017

|

tom 24

|

nr 1

The aim of this study was to examine the impact of spontaneous succession in comparison with black fallow on selected physical properties of soil damaged by mining in the area of internal dumping ground Pątnów near Konin. To evaluate the soil physical status, basic physical and chemical parameters (total organic carbon, bulk and particle density, pH), water characteristic curves, and water and air permeability were measured. The observed water retention data with the saturated hydraulic conductivity value were fitted to obtain soil water characteristic curves, differential porosity plots, and hydraulic conductivity function in the vadose zone. Over 30 years of spontaneous succession treatment of the post-mining grounds enriched the resulting Technosol in organic carbon 4 times more than the black fallow treatment. Vegetation caused a high belowground input of organic material, which was apparent by very low bulk density and very high porosity values. Spontaneous succession changed the typical differential porosity of a sandy soil mostly in the mesopore region. Soils under both treatments were characterised by excessive field air capacity, but the soil under spontaneous vegetation revealed higher volume of water available for plants in comparison to the black fallow soil, despite its coarser texture. The black fallow soil had lower and more variable air and water permeabilities than the soil under spontaneous succession. Vegetation including plants with extensive root systems positively influenced soil physical state, thereby improving soil ecosystem stability.

7

Możliwość określenia rodzaju środka zrywkowego na podstawie rozmiaru i charakteru naruszeń wierzchniej warstwy gleby

51%

Kulak D.

Acta Agraria et Silvestria. Series Silvestris

|

2010

|

tom 48

The present work makes an attempt to recognize the kind of logrolling means used while logging on the basis of range of disturbances of the top soil layer. The investigation covered horse skidding and skidding made with the MultiFKS hoisting winch. Graphical analysis of the diagrams representing disturbances characteristics of the top soil layer (surface and volume) allows one to perform correct recognition of the causative factor responsible for 18% of the damages. Application of artificial neuron networks allowed us to correct typing-out logging environment for 75-96.8% disturbances of the top soil layer.

8

Zmiany gęstości objętościowej wierzchnich warstw gleby pod wpływem czynników atmosferycznych

51%

Peczkowski G., Orzepowski W., Kowalczyk T., Bogacz A.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

2008

|

tom 526

W pracy podjęto próbę oceny wpływu deszczy letnich na zmiany gęstości objętościowej gleby. Analizę przeprowadzono na podstawie wyników badań wykonanych w latach 1996-1997. Zakresem praca obejmuje wybrane 4 poletka doświadczalne na zdrenowanych gruntach ornych w gminie Milicz. Stwierdzono, że w powierzchniowych utworach nastąpił niewielki wzrost gęstości objętościowej w zakresie od kilku do nieco ponad 10% (poziom A, dz. 1), co mogło być skutkiem intensywnych deszczy letnich. W przypadku głębiej położonych stref nie obserwowano praktycznie efektu zagęszczenia gleby. Zmiany gęstości objętościowej mogły być również, choć raczej w niewielkim stopniu spowodowane zmianami innych czynników naturalnych, takich jak np. temperatura lub wynikające z działań antropogenicznych.

Ograniczanie wyników