scholarly journals The Soil Temperature Regime in the Urban and Suburban Landscapes of Olomouc, Czech Republic

2013 ◽  
Vol 21 (3) ◽  
pp. 27-36 ◽  
Author(s):  
Michal Lehnert

Abstract The soil temperature regime is a relevant part of comprehensive topoclimatic research. Soil temperature data series measured at selected stations of the metropolitan station system of Olomouc in 2010-2011 were analysed. The focus was on the identification of geofactors influencing the soil temperature regime in the area of interest. The possibility of soil temperature simulation using knowledge of local specifics of the soil temperature regime was verified. The results indicate that the variability of the soil temperature regime was, apart from physical and chemical properties of soil, determined predominately by the character of the relief and the occurrence of related atmospheric inversions. The impact of the urban landscape on the soil temperature regime was not demonstrated. Average daily soil temperature was simulated with satisfying results, based on a model adjusted for a period without snow cover. The results represent a basis for further research on geofactors influencing the soil temperature regime in Olomouc and its surroundings.

Author(s):  
І. С. Романович

Експериментально досліджено основні показникипроб ґрунту, забруднених сирою нафтою. Представ-лено результати зміни фізико-хімічних показниківґрунту внаслідок нафтового забруднення, проаналі-зовано вплив нафти на основні властивості ґрунту зарізних рівнів концентрації полютанта в ґрунті. Зроб-лено висновки щодо впливу нафти на якість та водо-розчинну складову ґрунту. Проведено аналіз можли-вості впливу нафтового забруднення на ґрунтовіводи. The basic physical and chemical properties of soil samples contaminated with crude oil are studied experimentally. The results of changes in physical and chemical characteristics of the soil as a result of oil pollution are presented; the influence of oil on the basic properties of the soil at different concentration levels of pollutant in the soil was analyzed. The conclusions regarding the impact of oil on the quality and water-soluble component of soil are made. The analysis of the determination of possible influence of oil pollution on groundwater was conducted.


2020 ◽  
Vol 26 (1) ◽  
Author(s):  
Hrishikesh Khodade

Soil plays an important role for sustainable agricultural development which is a widely accepted fact. The composition of soil makes perfect recipe for proper growth and development of growing plants. Mainly the texture and contains of the soil give an idea about overall productivity of any type of soil. The present case study was conducted on the physical and chemical properties of soil at Rajgurunagar (Khed) Tehsil, Pune District (Maharashtra) state of India. The study has been conducted in 5 different localities of different directions for better understanding of nature and composition of soil. Rajgurunagar(Khed) is well known for upcoming developing region due to accumulation of various industrial companies such as SEZ, MIDC and many more. The effect of industrialisation on hydrosphere, atmosphere and lithosphere is noticeable in this Tehsil as an effect is seen on plant growth and development and is affecting on abundance, density of many plant as well as animal species. The total land area is unmanageable for agricultural development purpose. The impact of environmental factors on the soil attributes such as soil particle size which are the product of high degree of soil pollutants, organic matter content which show variability at different localities and other chemical constituents which indicate high degree of salt presence. The control measures are also indicated in a given study to overcome challenging and problem associated conditions.


2016 ◽  
Vol 20 (1) ◽  
pp. 137-145
Author(s):  
Krzysztof Pieczarka ◽  
Mateusz Kierdal ◽  
Krzysztof Lejman ◽  
Zygmunt Owsiak

AbstractThe research concern selected traction properties of Massey Ferguson 7475 wheeled tractor, which were carried out on various deformable surfaces i.e. soil: after ploughing, sodded and with rye fore crop. The impact of driving speed on tractive power and force with 2WD and 4WD drive was investigated. Physical and chemical properties of soil during testing were characterised by moisture, compactness and maximum shearing stresses. Studies on traction properties were carried out with the use of two tractors: Massey Ferguson 7475 and New Holland 5040. During measurements, tractors were connected with a tow rod, where a strain force transducer was mounted. The stand enabled also measurement of theoretical speed. As a result of analyses of the obtained results, characteristics of tractive force and towing power as a function of slip were made. The tests confirmed that the use of four-wheel drive is unjustified because it improves these tractive parameters of a tractor. It was reported that the maximum force and towing power are generated for the lowest values of slip which is equal to 0.1 on the sodded surface. However, value of this power is the lowest in comparison to other surfaces. The highest value of the adhesion coefficient was reported on soil with rye fore crop.


2015 ◽  
Vol 63 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Karsten Schacht ◽  
Bernd Marschner

Abstract The use of treated wastewater (TWW) for agricultural irrigation becomes increasingly important in water stressed regions like the Middle East for substituting fresh water (FW) resources. Due to elevated salt concentrations and organic compounds in TWW this practice has potential adverse effects on soil quality, such as the reduction of hydraulic conductivity (HC) and soil aggregate stability (SAS). To assess the impact of TWW irrigation in comparison to FW irrigation on HC, in-situ infiltration measurements using mini disk infiltrometer were deployed in four different long-term experimental orchard test sites in Israel. Topsoil samples (0-10 cm) were collected for analyzing SAS and determination of selected soil chemical and physical characteristics. The mean HC values decreased at all TWW sites by 42.9% up to 50.8% compared to FW sites. The SAS was 11.3% to 32.4% lower at all TWW sites. Soil electrical conductivity (EC) and exchangeable sodium percentage (ESP) were generally higher at TWW sites. These results indicate the use of TWW for irrigation is a viable, but potentially deleterious option, as it influences soil physical and chemical properties.


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