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Submodel of bypass flow in cracking soils. Part I. - Theory

100%

Slawinski C., Sobczuk H., Walczak R. T.

International Agrophysics

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1996

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tom 10

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nr 3

2

Spatial and temporal variability of soil water content

75%

Oyedele D. J., Tijani F. O.

International Agrophysics

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2010

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tom 24

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nr 2

171-176

3

Usage of the graph clustering algorithm to the recognition of geotechnical layers

75%

Rabarijoely S., Bilski P., Falkowski T.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2007

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nr 38

57-67

The aim of the paper is to present the approach to the application of the graph clustering algorithm to the recognition of geotechnical layers from the dilatometer tests. Results of the measurements obtained from the DMT test in the test site (subsoil of one of the buildings in the Warsaw University of Life Sciences campus) were analyzed by the clustering algorithm which was able to extract the separate groups of the measurements, representing identical soil type. This method is parameterized, so its verifi cation by the geotechnical experts was necessary to determine the optimal parameter values. They lead to the determination of the soil types as close to the actual situation, as possible. Also, the output of the algorithm was analyzed by the geotechnical experts to identify and label the extracted soil types.

4

The analysis of some physical properties of drained peat-moorsh soil layers

75%

Oleszczuk R., Truba M.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2013

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tom 45

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nr 1

The paper presents the results of measurements of some physical properties for 14 drained fen peat-moorsh layers (degree of decomposition, bulk density, particle density, porosity and saturated moisture content). The soil samples were taken from north- -east, central and east part of Poland. These areas were drained in order to use as a grassland and meadows. The article presents obtained data of selected physical properties from several drained peatlands in Poland and shows the comparison of established results with relevant data published in literature.

5

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

75%

Malek S., Wezyk P.

Ochrona Środowiska i Zasobów Naturalnych

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1999

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tom 18

6

Tekhnologija resursosberegajushhego nakoplenija vlagi v polevykh uslovijakh

63%

Zolotovskaya E., Mironov A.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2013

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tom 15

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nr 4

7

Soil organic carbon of different decomposition rate and its relation to microbial activity in saline-alkali desert ecosystem

63%

Fang F., Hu Y.-K., Gong Y.-M., Tang H.-P.

Polish Journal of Ecology

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2015

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tom 63

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nr 1

Soil microbes' activity is very important for forming of the nutrient stock and , soil structure, as well as the carbon cycle simulation. This is particularly crucial for deep soil layers. Effect of soil microbes on the rate of accumulation and decomposition of the soil organic carbon (SOC) has been found for different regions. However, it is known still a little on the SOC performance for different decomposition rates and its relation to the microbial activity in the saline-alkali desert ecosystem. Therefore, the main task of our research was investigation of interrelation between the soil organic carbon and microbial carbon (SMC) at different depths in the original saline-alkali Gurbantünggüt Desert. Our results showed in the soil vertical profile, (i) SMC and SOC presented a very significant positive linear correlation (R² = 0.63, P = 0.0003); (ii) SMC exhibited two obvious changed-interfaces - 20 cm and 80 cm, the SMC at depth of 0–20 cm, 20–80 cm and 80–500 cm was 2.24–3.06, 0.19–0.72, and 0.0017–0.0097 mg kg⁻¹, respectively; (iii) in the depth of 0–20 cm and 20–80 cm, the SMC had highly significant difference (P < 0.0001) and at 20–80 cm and 80–500 cm, significant difference (P = 0.013); (iv) according to the soil division based on the SMC, SOC also had some certain stratification; (v) organic carbon layers can be respectively defined according to different microbial activities as active, inert, and stable organic carbon pool. Therefore, these three kinds of organic carbon pools can be quantitatively measured by analyzing their location at different depths of the soil profile.

8

Content of potassium in different forms in the soils of Southeast Poland

63%

Fotyma M.

Polish Journal of Soil Science

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2007

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tom 40

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nr 1

This paper discusses the results of soil surveys of the content of different forms of potassium (K) carried out in 2003/2004 in Southeast Poland. A total of 700 soil samples, representing all soil textural groups, were collected from the plough layer and the subsoil, with the content of ‘total’, reserve, exchangeable, ‘available’ and water soluble potassium being determined. The content of all forms of non-water soluble potassium depends on soil texture, soil pH and the soil layer. The average shares of reserve, exchangeable and water soluble potassium in the ‘total’ potassium were 35.8, 11.8 and 2.76 % respectively, increasing from light to heavy soils and being higher in the plough layer than in the subsoil. The content of ‘available’ potassium determined in Poland using the Egner-Riehm DL method closely correlates with the content of exchangeable potassium.

9

Assessment of the role of heavy metals sources in water environment pollution; the Biala Przemsza River Basin [Southern Poland] case study

63%

Labus K.

Bulletin of the Polish Academy of Sciences. Earth Sciences

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1999

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tom 47

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nr 1

10

Statystyczne identyfikacje warstw gruntów na podstawie sondowań geotechnicznych

51%

Rabarijoely S., Sujka P.

Acta Scientiarum Polonorum. Architectura

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2012

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tom 11

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nr 2

W artykule przedstawione zostały ogólne zasady wydzielenia warstw gruntów na podstawie sondowań geotechnicznych. Zestawiono wyniki badań CPT oraz DMT z kampusu SGGW, a także wyznaczono w podłożu warstwy geotechniczne. Na podstawie wyników z badań laboratoryjnych, przede wszystkim analizy uziarnienia, rozpoznano rodzaj gruntu i porównano z danymi określonymi w badaniach terenowych. Przeprowadzono również analizę statystyczną danych z badań terenowych. Dodatkowo przedstawiono różnice w klasyfikacji gruntów według polskiej normy PN-86/B-02480 i normy europejskiej PN-EN ISO 14688.

11

Mineral nitrogen content in the 60-90 cm layer of grassland soils relative to other fodder crops, way of managing agricultural lands and farming intensity

51%

Watros A., Lipinska H., Lipinski W., Tkaczyk P., Krzyszczak J., Baranowski P.

Acta Agrophysica

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2018

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tom 25

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nr 3

12

An analysis of some basic chemical and physical properties of drained fen peat and moorsh soil layers

51%

Truba M., Oleszczuk R.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2014

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tom 46

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nr 1

The paper presents the results of measurements of some chemical properties for 14 drained fen peat-moorsh layers taken from north-east, central and east part of Poland. These areas were drained in order to use as a grassland and most of them in former time were under subirrigation systems. The following basic chemical properties were analysed: organic C, total N, C:N ratio, pH and ash content. In the paper also the relationships between some basic chemical and physical properties were analysed (ash content with bulk density, particle density and porosity). Increasing of ash content caused the decreasing of some chemical properties (organic carbon and total nitrogen content) and increasing some physical properties (bulk density and particle density).

13

Lithological-pedogenic discontinuity on the slopes of the Lysogory Massif in the Holy Cross Mountains

51%

Kowalkowski A.

Quaestiones Geographicae

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1991-1992

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tom 17-18

Ograniczanie wyników

Submodel of bypass flow in cracking soils. Part I. - Theory

Spatial and temporal variability of soil water content

Usage of the graph clustering algorithm to the recognition of geotechnical layers

The analysis of some physical properties of drained peat-moorsh soil layers

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

Tekhnologija resursosberegajushhego nakoplenija vlagi v polevykh uslovijakh

Soil organic carbon of different decomposition rate and its relation to microbial activity in saline-alkali desert ecosystem

Content of potassium in different forms in the soils of Southeast Poland

Assessment of the role of heavy metals sources in water environment pollution; the Biala Przemsza River Basin [Southern Poland] case study

Statystyczne identyfikacje warstw gruntów na podstawie sondowań geotechnicznych

Mineral nitrogen content in the 60-90 cm layer of grassland soils relative to other fodder crops, way of managing agricultural lands and farming intensity

An analysis of some basic chemical and physical properties of drained fen peat and moorsh soil layers

Lithological-pedogenic discontinuity on the slopes of the Lysogory Massif in the Holy Cross Mountains