scholarly journals Correlation between Chemical and Index Properties of Soils of Hyderabad Region

2018 ◽  
Vol 4 (12) ◽  
pp. 2821 ◽  
Author(s):  
Hemu Karira ◽  
Aneel Kumar ◽  
Anees Raja ◽  
Ali Murtaza
Keyword(s):  
Regression Analysis ◽  
Chemical Properties ◽  
Local Area ◽  
Soil Parameters ◽  
Regression Equations ◽  
Index Properties ◽  
Mathematical Equations ◽  
Chemical Properties Of Soils ◽  
Properties Of Soil ◽  
And Chemical Properties

Each soil has unique nature of the characteristics and its properties are beyond the control of the designer. Since the soil parameters varies from site to site or location to location, thus selecting the reliable properties of soil is always a challenge for the Geotechnical Engineers. One of the option is intense soil investigations. However, there are various soil properties whose determination is time consuming and expansive. Geotechnical Engineer usually tries to develop mathematical equations specific to a particular soil type. However, a mathematical formula that is more reliable for the type of soil in which the link is genuine. In the light of above discussion, index and chemical properties were not investigated in most of the areas of Hyderabad region. Also correlation between chemical and index properties were not investigated. Correlation between chemical and index properties were not well understood. Thus it is important to develop the appropriate mathematical equations to be able to access the local area. The aim of this study is to determine index and chemical properties of soil selected from different locations of Hyderabad Region and also develop correlation between chemical and index properties of soils of Hyderabad region. Regression analysis have been carried out between Index and chemical properties. Such correlations may be of use to geotechnical engineers, in preliminary estimates of index and chemical properties of soils Hyderabad region and perhaps reduce testing requirements. The data obtained from independent laboratory tests on soils sourced from several locations in Hyderabad region were subjected to regression analysis after the samples had been grouped in A-4, A-6, and A-7-6 using AASHTO classification system. The derived Regression equations can be used to estimate the index and chemical properties of soils in Hyderabad region.

scholarly journals Specification of the beechwood soil environment based on chosen soil properties, aiming at the Fageta paupera habitat

2011 ◽  
Vol 57 (No. 5) ◽  
pp. 185-191
Author(s):  
A. Kučera ◽  
K. Rejšek ◽  
P. Dundek ◽  
K. Marosz ◽  
P. Samec ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Soil Properties ◽  
Chemical Properties ◽  
European Beech ◽  
Soil Samples ◽  
Soil Environment ◽  
Laboratory Assessment ◽  
Definition Of ◽  
Properties Of Soil ◽  
And Chemical Properties

ABSTRACT: This paper deals with a specific type of homogeneous beechwood called Fageta paupera. The aim is to acquire information about the heterogeneity of soil environment. As a material we used 20 research plots of semi-natural European beech stands, where the sampling of soil profile and the observation of floristic conditions were realized. Laboratory assessment of soil samples was focused on physicochemical and chemical properties of soil: pH/CaCl<sub>2</sub>, K<sup>+</sup>, Ca<sup>2+</sup>, Mg<sup>2+</sup>, CEC (T, S, V), C<sub>ox</sub>, N<sub>t</sub>, C/N, C-FA, C-HA, C-CHL, C-HA/FA. Data processing was done with the aim to discover a variability of soils, observing soil genetic horizons individually (H, A, B, C). Research plots were divided into biotopes with the cover of understory vegetation &lt; 15% and &gt; 15% (in accordance with the definition of Fageta paupera) and the variability of soil properties in each horizon for the two above-mentioned biotopes and furthermore for all plots together was investigated. Results show the highest variability of soil properties in the biotope of Fageta paupera, especially in its holorganic (H) and organomineral (A) horizons. Furthermore, regression analysis showed the strongest dependence of the variability of soil properties in the biotope of Fageta paupera.

scholarly journals STUDY AND ESTIMATION OF THE RATIO OF 137CS AND 40K SPECIFIC ACTIVITIES IN SANDY AND LOAM SOILS / 137CS IR 40K SAVITŲJŲ AKTYVUMŲ SANTYKIŲ TYRIMAS IR VERTINIMAS PRIESMĖLIO IR PRIEMOLIO DIRVOŽEMYJE

2011 ◽  
Vol 3 (5) ◽  
pp. 37-42
Author(s):  
Renata Mikalauskienė ◽  
Donatas Butkus ◽  
Ingrida Pliopaitė Bataitienė
Keyword(s):  
Chemical Properties ◽  
Dry Weight ◽  
Soil Samples ◽  
Physical And Chemical Properties ◽  
Nuclear Testing ◽  
Specific Activities ◽  
Physical And Chemical ◽  
Chernobyl Nuclear Plant ◽  
Properties Of Soil ◽  
And Chemical Properties

The present article describes changes in specific activities and fluctuations in the ratio of natural 40K and artificial 137Cs radionuclides in soil samples taken from different places of Lithuanian territory. The samples of soil have been selected from the districts polluted after the accident in Chernobyl nuclear plant performing nuclear testing operations. The study has established the main physical and chemical properties of soil samples and their impact on the concentration of 40K activities. 137Cs/40K specific activities in soil have been observed under the dry weight of the sample that varied from 0.0034 to 0.0240. The results of the study could be used for establishing and estimating 137Csand 40K transfer in the system “soil-plant”. Santrauka Straipsnyje nagrinėjama gamtinės (40K) ir dirbtinės (137Cs) kilmės radionuklidų savitųjų aktyvumų ir jų santykio kaita skirtinguose Lietuvos teritorijos dirvožemiuose. Dirvožemio mėginiai parinkti iš vietovių, kurios buvo labiau užterštos po Černobylio atominės elektrinės avarijos ir buvusių branduolinių bandymų. Tyrimo metu nustatytos pagrindinės fizinės cheminės dirvožemio savybės ir jų poveikis 40K aktyvumų koncentracijai. 137Csir 40K savitieji aktyvumai dirvožemyje tirti esant sausam mėginio svoriui. 137Cs savitieji aktyvumai sausame dirvožemyje svyravo nuo 1,1±1,0 iki 14,3±0,9 Bq/kg, o 40K savitieji aktyvumai – nuo 326±29 iki 740±15 Bq/kg. 137Csir 40K savitųjų aktyvumų santykis skirtingų vietovių dirvožemiuose kito nuo 0,0034 iki 0,0240 Bq/kg. Tyrimo rezultatai gali būti panaudoti, nustatant ir įvertinant 137Csir 40K pernašą sistemoje dirvožemis–augalai.

scholarly journals Physical and chemical properties of soils in different physiographic environments in the southern Amazonas region

2019 ◽  
Vol 35 (4) ◽  
Author(s):  
Willian Barros Nascimento ◽  
Milton César Costa Campos ◽  
Bruno Campos Mantovanelli ◽  
Luís Antônio Coutrim dos Santos ◽  
José Mauricio Cunha ◽  
...  
Keyword(s):  
Particle Density ◽  
Broad Class ◽  
Chemical Properties ◽  
Principal Component ◽  
Available Phosphorus ◽  
Physical And Chemical Properties ◽  
Dry Land ◽  
Chemical Properties Of Soils ◽  
Physical And Chemical ◽  
And Chemical Properties

The Amazon region has a great diversity of landscapes such as forests galleries, natural fields (“Cerrados Amazônicos”), dense forest, these environments made possible the formation of a broad class of soils over time. The aim of this study was to evaluate the physical and chemical properties of soils in different physiographic environments in southern Amazonas, Brazil. Three areas of representative physiographies were selected, all of them in natural conditions: natural field / forest and floodplain / dry land transitions, and corrugated relief areas. Soil samples were collected in layers of 0.0 to 0.20 and 0.80-1.0 m. From the samples collected the following physical analyzes were performed: particle size, bulk density, particle density, total porosity and saturated hydraulic conductivity; and chemical: exchangeable calcium, magnesium, aluminum and potassium available, phosphorus, potential acidity, pH and organic carbon. Based on the results of chemical analysis were calculated the sum of bases and base saturation. The results were submitted to multivariate statistics analysis, at the discretion of the principal component analysis (PCA). From the results it is clear that different physiographic environments studied influence the formation of different soil classes, featuring the diversity of Amazonian soils. The PCA allowed the distinction and formation of different similarity groups, thus enabling to relate the physical and chemical properties with the physiographic formation in which they are inserted.

Dynamics of physical and chemical properties of soil after agricultural abandonment in a karst region in Southwest China

2021 ◽  
Author(s):  
Ke Wang ◽  
Zhigang Wang ◽  
Jiale Wang ◽  
Jianming Li ◽  
Bei Sun ◽  
...  
Keyword(s):  
Soil Quality ◽  
Water Loss ◽  
Chemical Properties ◽  
Soil Sampling ◽  
Physical And Chemical Properties ◽  
Rocky Desertification ◽  
Rock Outcrops ◽  
Physical And Chemical ◽  
Properties Of Soil ◽  
And Chemical Properties

&lt;p&gt;Rocky desertification induced by severe deforestation has caused the water loss and soil erosion in karst regions in southeast China, limiting local social and economic developments. To prevent further rocky desertification, the farmland which had obtained by deforestation were abandoned for recovery. As soil quality improved by agriculture abandonment should be examined, it is necessary to investigate the dynamics of physical and chemical properties of soil in different ages after abandonment. In this study, 38 investigation sites were selected for soil sampling on the slopes in Longtan trough valley in Youyang County, Chongqing Municipality, China. The dominant plant species of the investigation sites were also noted during soil sampling. The sites were divided into seven age classes according to their abandonment time. Dynamics of water content, bulk density, pH, and concentration of available potassium, available phosphorus, available nitrogen, total nitrogen and organic matters were examined. It suggests that soil quality might be deteriorated right after abandonment and then improved from around 20 years after abandonment. Deterioration of soil quality may be induced by lack of plant coverage and exposure of rock outcrops which may accelerate water loss and swelling and shrinkage cycles of soil. After the formation of plant communities and litter layer above the ground, soil quality was then apparently improved. These findings can provide a potential guideline for recovery management in karst regions in southwest of China.&lt;/p&gt;

SOIL AS A MAIN GEOECOLOGICAL FACTOR FORMING LANDSCAPES

2021 ◽  
Vol 81 (2) ◽  
pp. 145-152
Author(s):  
STOLYAROVA ELENA M. ◽  
◽  
VAYCHULIS GERMAN V. ◽  
Keyword(s):  
Chemical Properties ◽  
Soil Formation ◽  
Complete Analysis ◽  
Structural Method ◽  
Ecological Functions ◽  
Living Space ◽  
Ecological Functions Of Soils ◽  
Chemical Properties Of Soils ◽  
The Moment ◽  
And Chemical Properties

The relevance of the work. At the moment, a stable trend has formed in soil science, according to which the soil is considered and recognized not only as a result that was achieved as a result of the process of soil formation, but also simultaneously as a multifunctional natural structure, which is of colossal importance in terms of the formation of existing landscapes and newly formed and the proper functioning of the ecosystem as such. Purpose of work. Comprehensive and complete analysis of soil as the main geoecological factor shaping landscapes. Methodology of work. Analysis of scientific literature on this topic, synthesis, system-structural method. Method of comparative analysis. Results of work. The article discusses the main ecological functions of soils: global (atmospheric, hydrospheric, lithospheric, general biosphere) and biogeocenotic (ecosystem). The most important biogeocenotic functions of soils are determined by the physical, physicochemical, and chemical properties of soils. It is noted that the physical properties of soils determine such functions as habitat, living space of soil organisms and plants; chemical properties as a source of nutrients and energy; physicochemical properties such as sorption of mineral and organic substances, microorganisms, enzymes, water. Soils in biogeocenoses also perform informational functions, the functions of preserving and maintaining biodiversity, sanitary, etc. Conclusions. Consideration of various categories of soil functions in the system of its biogeocenotic, landscape and biospheric interactions allows us to conclude that the ecological multifunctionality of the soil is its fundamental feature.

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