scholarly journals Proposal for a method for Colluvisol delineation in Chernozem region

2008 ◽  
Vol 3 (No. 4) ◽  
pp. 215-222 ◽  
Author(s):  
T. Zádorová ◽  
T. Chuman ◽  
L. Šefrna

Erosion, which is one of the most important exogenous processes forming the landscape, has become a main degradation factor affecting agroecosystems. One of the direct erosion effects is a change in the soil cover structure. Colluvisols, originating in the material accumulated in depressions and foot part of slopes, represent a significant element in such a segmented soil mosaic. In the Chernozem loess area of Žďánický les, a method of areal delimitation of Colluvisols was proposed. Considering the homogeneity of the relative soil properties, the terrain morfometric characteristics (slope, profile curvature, and plan curvature) were applied as the main criteria. The final map reflects specifically the general zones of potential Colluvisol formation, such as lateral valleys and slope bases – floodplain interfaces. In the locality under study (size 3 ha), the microrelief evaluation of the colluvial process was proceeded particularly in a colluvial-alluvial zone. The results showed a significant difference between the soil properties of adjacent Colluvisol and Fluvisol resulting mainly from the distinct character of sedimentation.

2009 ◽  
Vol 4 (No. 2) ◽  
pp. 84-90
Author(s):  
T. Zádorová ◽  
L. Brodský ◽  
M. Rohošková

Pedometrical methods and digital soil mapping represent a progressive approach to the evaluation of various terrain-related soil processes. A detailed digital terrain model was used for the analysis of erosion – sedimentation situation and description of specific soil properties at meso-relief scale. A study plot in Central Bohemia (area 4 ha) with highly diversified geological conditions was chosen for the study combining digital modelling with a detailed terrain survey and laboratory analysis. The curvature and topographic wetness index values were the main features for the accumulation and soil loss areas evaluation. The terrain survey and DTM results corresponded in the case of the soil cover structure and soil depth, showing a vast impact of accelerated water erosion and direct tillage erosion on the soil redistribution. In the concave and base slope positions, colluvial soils were identified, while Regosols with A–C profile stratigraphy form in the upper convex parts of the study plot. Particular soil properties distribution (pH, organic carbon content, texture) is, besides erosion, significantly influenced by parent rock variation and the relation to the terrain characteristics is less distinctive. The study showed a significant impact of the terrain properties on the general material redistribution and the possibility of soil cover structure prediction in areas with complicated geological conditions.


2010 ◽  
Vol 65 (1) ◽  
pp. 22-31 ◽  
Author(s):  
T. A. Paramonova ◽  
E. V. Tishkina ◽  
S. F. Krasnov ◽  
D. O. Tolstikhin

2018 ◽  
Vol 940 (10) ◽  
pp. 54-64 ◽  
Author(s):  
I.A. Belozertseva ◽  
A.A. Sorokovoj

On the basis of long-term researches of soils in the territory of Russia and Mongolia soil and ecological division into districts of the Baikal region is carried out. At division into districts the whole set of an environment of soil formation was considered. On the map of soil and ecological division into districts 13 mountain, mid-mountain, low-mountain taiga, foothill, hollow-valley, forest-steppe and steppe provinces reflecting surface device originality as the ratio of balance of heat and moisture forming a basis to zoning is shown against the background of difficult orography are allocated. In total 42 districts on lithologic-geomorphological features are allocated. In formation of distinctions of a soil cover of these provinces the leading role is played by bioclimatic factors and inside them the lithologic-geomorphological ones. In the view of structural approach of the district they are considered as territories with a certain natural change of several types of the soil cover structure caused by features of a relief and the parent rock. The map is made in the MapInfo program. It is revealed that on ill-defined width zoning of soils the vertical one which has a greater influence on soils of this region is imposed. Soils of the Baikal region are not similar to the soils located at the same latitude of the flat European territory of Russia. Zone soils of this territory are specific and original.


Agriculture ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 171
Author(s):  
Gaurav Mishra ◽  
Rosa Francaviglia

Northeast (NE) India is a typical tropical ecosystem with a luxuriant forest vegetation cover, but nowadays forests are under stress due to exploitation and land use changes, which are known to affect soil health and productivity. However, due to a scarcity of data, the influence of land uses and altitude on soil properties of this peculiar ecosystem is poorly quantified. This study presents the changes in soil properties in two districts of Nagaland (Mon and Zunheboto) in relation to land uses (forest, plantation, jhum and fallow jhum), altitude (<500 m, 500–1000 m, >1000 m) and soil texture (coarse, medium, fine). For this, a random soil sampling was performed in both the districts. Results indicated that soil organic carbon (SOC) stocks and available potassium (K) were significantly influenced by land uses in the Mon district, while in Zunheboto a significant difference was observed in available phosphorus (P) content. SOC stocks showed an increasing trend with elevation in both districts. The influence of altitude on P was significant and the maximum concentration was at lower elevations (<500 m). In Mon, soil texture significantly affected SOC stocks and the available N and P content. The variability in soil properties due to land uses, altitudinal gradients and textural classes can be better managed with the help of management options, which are still needed for this ecosystem.


Author(s):  
Taras Yamelynets ◽  
Mykola Fedotikov

For studying the soil cover structure of Opillia region, we used methods for the identification (natural-cartometric, relief sculpture, quality-genetic) and interpretation (statistical cartometric, functional and analytical) of the soil cover structure. The natural-cartometric method was used to characterize elementary soil areas of the key area, what makes it possible to determine the parameters of the soil structure and obtain quantitative indicators for the key elementary soil areas parameters, which are: elementary soil areas composition and area ratio, complexity, fractionality, breakdown, contrast ratio and heterogeneity. This article is devoted to the study results of qualitative and quantitative characteristics of elementary soil areas of the Opillia within Khodorivsko-Buchatskyi region, hereinafter Khodorivsko- Buchatske Opillia. With coefficient of the differentiation of the soil outlines and methods of variation statistics were identified and analyzed the degree of variability ESA areas. The degree of tortuosity and elongation of area limits using the coefficient of the dismemberment were studied. Investigated the character of outlines of elementary soil areals within the area of research. Identified the basic features of ESA borders depending on various environmental factors. The certain laws of changing of the basic parameters of elementary soil areas, which form the soil structure of Khodorivsko- Buchatske Opillia were determined and described in the article. Key words: elemental soil areal (ESA), soil structure (SS), coefficient of the differentiation of the soil outlines (CDSO), coefficient of dismemberment (CD), coefficient of variability (CV).


2008 ◽  
Vol 13 (1) ◽  
pp. 121-132
Author(s):  
Katarzyna Ostaszewska

Abstract The purpose of this paper is the delimitation of the main structure of the soil cover in Poland. The German methodology, used to define high-level taxonomic units, is applied. The method applied is useful for the presentation of the soil cover structure in small-scale maps (e.g., maps of continents).


2021 ◽  
Vol 9 (1) ◽  
pp. 48-57
Author(s):  
Mohd Fauzie Jusoh Jusoh ◽  
Lai Jai Xin ◽  
Ch'ng Huck Ywih ◽  
Palsan Sannasi Abdullah ◽  
Noraida Mohd Radzi ◽  
...  

Beach ridges interspersed with swales (BRIS) soil is identified as one of Malaysia's problematic soil since this type of soil contains a plethora portion of sand texture that contributes to water and nutrient leaching causes infertile soil. A polybag trial was conducted to evaluate the effects of wood vinegar and rice husk biochar on soil properties and growth performances of immature kenaf. The plant was arranged in a completely randomised design with four treatments and three replications. The factors taken for the experiment were four different media compositions, i.e., T1(control), T2(BRIS soil amended with wood vinegar, WV), T3(BRIS soil amended with rice husk biochar, RHB) and T4(BRIS soil amended with wood vinegar and rice husk biochar, WV+RHB). Rice husk biochar and a combination of wood vinegar with rice husk biochar significantly improved soil properties in terms of soil moisture content, organic matter, water retention and soil porosity, as well as significantly increased the kenaf stem diameter. However, there was no significant difference in plant height, number of leaves, leaves area and chlorophyll content on different treatments medium. In conclusion, the application of rice husk biochar and wood vinegar in this study enhanced BRIS soil properties and showed a positive effect on the growth of immature kenaf.


Author(s):  
Daiana Jungbluth ◽  
Ana Regina Dahlem Ziech ◽  
Camila Roberta Pereira ◽  
Márcia Cristina Dos Santos ◽  
Patrick Machado

The no-till system has been growing over the years and for this system to be successful, it is essential to maintain permanent vegetation cover over the soil, an adequate crop rotation system with minimal overturning. A strategy for soil protection is to introduce species of cover crops in winter under single or intercropping. The objective was to evaluate the rate of soil cover by intercropping between black oats (Avena strigosa L.) and forage turnip (Raphanus sativus L.) at different sowing densities, as well as the isolated species in terms of soil protection under no-tillage. The study was conducted at the Federal Technological University of Paraná (UTFPR), campus Santa Helena, with a randomized block design, with five treatments and three repetitions. The treatments were: 100% black oats (BO); 100% forage turnip (FT); 75% BO + 25% FT; 50% BO + 50% FT and 25% BO + 75% FT. The cover crops were sown in May 2019. The percentage of soil cover from 21 to 91 days after sowing (DAS) was evaluated using the photographic method, with weekly collection of images in an area delimited by a metallic frame (25 m²), positioned on the ground at two fixed points per plot. The coverage rate quantification was estimated by overlaying a grid with 100 points of intersection over each image. The rate of soil cover by consortia and single crops did not show a statistically significant difference. To 49 days, consortia had coverage equal to or greater than 70%, while for single species, this percentage was reached at 56 DAS and 70 DAS, for BO and FT, respectively. All treatments showed high potential for soil protection and coverage rate from 70 DAS.


2020 ◽  
Vol 6 (2) ◽  
pp. 42-46
Author(s):  
M. Mammadova

The Zayamchay basin is selected by its complex structure, various climatic conditions, rich vegetation and soil–rich rocks. This variation of soil–forming factors has led to the formation of various forms of soil cover structure within the basin. Therefore, the study of land and its space manifestation — the soil cover structure, detail mapping, evaluation and optimization — both scientifically–theoretical and practical. The Zeyamchay basin, which is located on the north–western slope of the Lesser Caucasus, is the object of the research. The Zeyamchay basin is selected by its complex relief structure, various climatic conditions, rich vegetation and soil–rich rocks. The area of the basin is 94200 hectares. The basin covers part of Tovuz, Shamkir and Gadabay districts from the administrative point of view. These kind of soil–forming factors have led to the formation of different forms of soil cover structure within the basin. During the research, empirical information is collected from cartographic, soil research, aerospace, landscape and geomorphological methods and so on was used.


2021 ◽  
Vol 0 (6) ◽  
pp. 24-27
Author(s):  
Mihail Ustinov ◽  
Mihail Glistin

The basis of adaptive landscape diagnostics and assessment of the structure of the soil cover of the reclaimed territories is based on the basin principle, since the drainage basin is the prevailing geosystem that forms the landscape everywhere, the fundamental concept of which is based on the idea of the interrelation and interdependence of all natural phenomena of the earth’s surface. The key geosystem unit for mapping the soil cover structure and its diagnostics in the catchment area is the transect-catena. In the transect-catena, as a natural body, not torn out of the space and time of regional development of the territory and being its full-scale model, and an information key, the areal «geometric shape» (cartography) of the soil cover is combined with catenary (geochemical conjugation) and with structural functionally organization of geosystems.


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