Relevant bibliographies by topics / Humus soil

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Academic literature on the topic 'Humus soil'

Author: Grafiati
Published: 5 June 2025
Last updated: 24 June 2025

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Journal articles on the topic "Humus soil"

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Elkina, G. Y., E. M. Lapteva, L. A. Likhanova, and Yu V. Kholopov. "Organic matter transformation in post-agrogenic soils of the Middle Taiga zone." Plant Biology and Horticulture: theory, innovation, no. 152 (February 18, 2020): 100–107. http://dx.doi.org/10.36305/2019-3-152-100-107.

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Objective. The purpose is to study the organic matter transformation in Podzols from the middle taiga zone.Methods. The study materials are arable lands from the central regions of the Komi Republic. These lands are not agriculturally used since the early 90-ies of the former century. The soil analyses are done according to the common methods.Results. The study allows for the humus profile structure of Podzols along with the following successive stages as meadow idle land young forest dwarf shrub-green moss spruce forest. It also describes the mechanisms of post-agrogenic humus transformation in agricultural sod Podzols due to the self­ restoring succession.Conclusion. Initially, the post-agrogenic soils normally repeat agrozems by characteristics. The upper soil part forms a thin grey-humus (sod) horizon. It contains large amounts of humus, exchangeable cations, and nutrition elements. The specific synthesis and destruction processes of humic substances at the meadow idle land stage change the qualitative humus composition. In contrast with arable lands, the humus composition is dominated with fulvic acids as being best appropriate to the concerned bioclimatic zone. The humuc-fulvic humus composition holds only in the upper old-arable soil part of the meadow idle land. The appearance of pioneer tree species increases the dominating position of FAs and the Cha/Cfa ratio resembles that for forest soil. The organic matter is poor in nitrogen compounds, especially at the young forest stage. By the C/N ratio, the post-agrogenic soils also gradually get close to naturally formed soils under virgin forest.
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Kogut, B. M. "ESTIMATE OF CHERNOZEM ERODIBILITY LEVEL ACCORDING TO THE HUMIFICATION DEGREE." Dokuchaev Soil Bulletin, no. 78 (May 1, 2015): 59–69. http://dx.doi.org/10.19047/0136-1694-2015-78-59-69.

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A short review of literature sources is presented to characterize the eroded soils according to their humus content. Traditional diagnostic indicators of the soil erodibility level based upon the humus status are the following: (1) decrease in the thickness of humus horizons in eroded soils in percentage of that in uneroded soil (standard); (2) decline in the humus storage in the eroded soil profile in percentage of that in uneroded soil (standard). It is worth emphasizing that the choice of the uneroded soil standard is a rather labor-consuming study in field and assumes an expert (subjective) character that is highly dependent on the soil scientist’s skill. It is shown that the main shortcomings of the available gradation for eroded soils consist in the absence of approaches to give their objective estimate and recommendations for permissible levels of soil erodibility taking into complete account the humus content in these soils. In the Russian Federation there is a gradation of arable soils (including chernozems) according to the humus content in the plough horizon. It contains four classes (less than the humus minimum, low, moderate and high humus content). In this paper it is recommended to give the gradation of eroded soils with the minimal humus content. The level of chernozem erodibility should be estimated as based upon the minimal and critical humus content. The minimal humus content is interpreted by Kërshens, whereas the critical humus content - by Kiryushin and Ganzhara. A gradation scale of soil erodibility is presented to estimate its permissible, non-permissible and critical levels. It is exemplified by the gradation of chernozem soils in Russia and Germany.
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Prilutskaya, Natal'ya S., Tat'yana A. Korel'skaya, and Lyudmila F. Popova. "STUDY OF STRUCTURAL AND FUNCTIONAL COMPOSITION OF SOIL HUMUS ACIDS OF EURO-ARCTIC REGION BY MOLECULAR ABSORPTION SPECTROSCOPY (UV / VISIBLE)." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 61, no. 2 (2018): 97. http://dx.doi.org/10.6060/tcct.20186102.5610.

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Results of the structural and functional composition of soil humus acids in the Euro-Arctic Region are presented. The molecular absorption spectroscopy (UV / visible) was used to evaluate eco-protective role of soils in relation to heavy metals, which is especially important for the sensitive soils of the Arctic, formed under the influence of cryogenic processes. Different types of soils of the Euro-Arctic region: gleyish easy loamy pelosi on loamy moraine (Kanin Peninsula, Cape Kanin Nos); humus peat oligotrophic soil (Kolguev Island, Bugrino village); typical non-calcic loamy gley soil (Vaigach Island); gray humous iron sandy lithozem (Archipelago Franz Josef Land, Heys Island) were analyzed. An alkaline solution of sodium pyrophosphate was used to extract humus acids for investigate of the structural and functional composition. Humic, fulvic and gimatomelanic acids were extracted from a humus by conforming solvents with additional fulvic acids extraction by adsorption chromatography using activated carbon as a sorbent. UV mini-1240 spectrophotometer (Shimadzu) was used to record the UV / visible spectra using 0.005% alkaline solutions (0.1 N NaOH) of humus acids. It was demonstrated that humic and gimatomelanoic acids of humus peat oligotrophic soil have more developed peripheral aliphatic component. These acids have more ability to bind heavy metals and show their eco-protective role. The humus acids of other types of soils region have a more developed aromatic component in the Euro-Arctic. Such parameters as: calculated by the Pieravuori formula aromaticity, extinction coefficient Е0.005%1cm,465, adsorption ratio D400 /D600, characterizing the degree of humification and the adsorption ratio D465 / D650, characterizing the degree of aromatic nucleus condensation and conjugate fragments were used in the quantitative assessment of the nature of humus acids. Quantitative analysis of UV/visible spectra confirmed that the maximum barrier mechanism with respect to heavy metals will be the humic and gimatomelanoic acids of humus-peat oligotrophic soil, due to the high content of phenolic and carboxyl groups in these molecules, oxidation and a more developed chain of conjugated bonds in them in comparison with other acids. However, it was found that in all types of soils studied the process of humus formation proceeds mainly by a degradation type, that is, in the direction of formation of fulvic acids. Forcitation:Prilutskaya N.S., Korel'skaya T.A., Popova L.F. Study of structural and functional composition of soil humus acids of euro-arctic region by molecular absorption spectroscopy (UV / visible). Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 2. P. 97-103
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Shadieva, Nilufar, Bobir Kholmatov, Gulchekhra Sodikova, and Aliya Mahkamova. "Group-fractional composition of humus in dry aggregates of weakly saline grass-meadow soils." E3S Web of Conferences 563 (2024): 03047. http://dx.doi.org/10.1051/e3sconf/202456303047.

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The study focused on analyzing changes in the group-fraction composition of humus in dry aggregates of weakly saline grass-meadow soils. The research aimed to understand the dynamics of humus composition and content in these soils, which are crucial for soil fertility and ecosystem health. The analysis revealed significant changes in the group and fractional composition of humus in the dry aggregates of the studied soils. These changes are indicative of the humus status and can provide insights into the overall soil health and fertility. Based on the findings, it was concluded that the soils belong to the fulvate-humic and fulvate type based on the type of humus present. This classification indicates the predominance of fulvic acids and humic acids in the humus composition, which play vital roles in soil nutrient cycling, microbial activity, and overall soil structure. The results of this study contribute to a better understanding of the humus dynamics in grass-meadow soils, particularly in relation to saline conditions. This knowledge is essential for developing sustainable soil management practices that can improve soil fertility, enhance crop productivity, and maintain ecosystem health in saline-affected agricultural lands. Further research in this area could focus on the long-term effects of soil management practices, such as organic matter addition and irrigation strategies, on the humus composition and overall soil health of saline-affected grass-meadow soils.
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FANDALIUK, А. "HUMU CONTENT IN THE SOILS OF THE LOW ZONE OF THE TRANSCARPATHIAN REGION." Plant Science (Horticulture, Viticulture, Seed Production) 1-2, no. 1 (2023): 24–27. http://dx.doi.org/10.47279/plantscience_2023-01-5.

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On the basis of research carried out in the XI round of ecological and agrochemical certification, the humus condition of the soils of the lowland zone of the Zakarpattia region is shown.Qualitative and quantitative changes in soil properties and the content of humus and nutrients in it are influenced by long-term and systematic soil cultivation, application of mineral fertilizers, chemical land reclamation, as well as the introduction of crop rotation. In recent years, almost a third of the "golden" reserves of humus have been lost from the bank of national soil fertility in Ukraine. Every five years, the soils of Ukraine lose 0.04% - 0.05% of humus, that is, 300 - 350 kg disappear in one year [1]. The main accumulator of soil energy, the regulator of the water-absorbing capacity of the soil, its biological activity is the organic substance - humus. Therefore, the content, reserves and qualitative condition of humus are among the important indicators, the level of which depends on almost all the agronomically valuable properties of the soil. The growth of humus content is a long-term process, and its decrease is extremely fast. The problem of humus is extremely important for the soils of Transcarpathia, as a large amount of precipitation (more than 700 mm per year) contributes to its leaching. In addition, meager rates of organic fertilizers, due to the decrease in livestock, do not compensate for the removal of humus from the soil. Key words: soils, humus, biologization, agrochemical certification, lowland zone
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Nakonechnyy, Yuriy. "Group fractional composition of humus of alluvial soils of floodplain of Western Bug River." Visnyk of the Lviv University. Series Geography, no. 44 (November 28, 2013): 235–43. http://dx.doi.org/10.30970/vgg.2013.44.1228.

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Fractionally-group composition of humus alluvial turf, meadow, meadow marsh and bog soils of floodplain of Western Bug River was characterized. The results of studies of quality of soil humus of floodplain of this river by Ukrainian and foreign researchers were analyzed. The main indicators of fractionally-group composition of humus soils were studied. Key words: alluvial soils, humus of soil, fractionally-group composition of humus, humic acids, fulvic acids.
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Denys, Vitaliy. "Distribution of humus in fraction of structural units of gray forest soil of Ranged Pobuzhya." Visnyk of the Lviv University. Series Geography, no. 41 (September 17, 2013): 117–25. http://dx.doi.org/10.30970/vgg.2013.41.1938.

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In this work presents the results of the research content of humus light gray and gray forest soils of Ranged Pobuzhya. We characterized the contents of humus in soils of different structural aggregates of agricultural use. Found that with decreasing size of the aggregates the humus content are increases and soil under forest characterized by the best indicators of humus content. Key words: gray forest soils, light gray forest soil, humus, aggregates, structure.
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Huslystyi, A. O. "Influence of woody vegetation on the content of humus in chernozem soils." Ecology and Noospherology 30, no. 1 (2019): 50–55. http://dx.doi.org/10.15421/031909.

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The literature sources on the influence of woody vegetation on the content of humus in chernozem soils were analyzed. In scientific literature, there are many articles from scholars from around the world on the study of the content of organic matter in the soil under various types of plantings. Proceeding from this, there is a need for comprehensive research on humus of reference black soil common. Separately there is the question of the influence of artificial forest plantations of different wood structure and light structure on the complex characteristics of ascending ordinary black soil. The importance of these studies is due to the complex ecological role played by humus in soils. As a result of the analysis of literary data, it was discovered that woody vegetation increases the content of organic matter and positively affects the black soils. Regularities of change in the humus state are connected, first of all, with the type of land use. Under each tree species there is a characteristic and peculiar humus distribution in the soil profile, which differs significantly from the quantitative or qualitative distribution of humus in the soil horizons. In general, under the forest vegetation, the content of humus increases, as well as the structure of the soil improves, the permeability and porosity of the upper layer of soil increases. In the course of the literary analysis it became clear that the older the tree plantations, the greater the thickness of the humus horizon below them. In the monitoring sites under the Tilia cordata, there is a tendency to increase the content of humus, hygroscopic moisture, absorption capacity and granulometric composition, indicating improvement of soil conditions. Plantation of Acer platanoides leads to a decrease in the content of total humus in a 0-30-centimeter layer of soil, but with depth this index is gradually increasing. Under the Quercus robus plantations in the surface layer of soil, scientists observed a decrease in humus content, and in the middle layers of soil, on the contrary, an increase in this indicator. With a depth observed leaching of humus. The indicator of humus under Quercus robus is characterized by a significantly higher level of humus, than in black soil. So, the results are typical for humus in zonal chornozems. The data of some authors show that it is in natural forests that the best conditions for the humus accumulation in black soils are formed in comparison with the soils of artificial forests and soils under zonal vegetation (motley grass, Bromus spp., Stipa spp.). Under forest vegetation, leafy deposits form a litter. The Robinia pseudoacacia litter results in improved physical and chemical properties of soils, increases the content of organic matter, exchangeable potassium, absorption capacity, increases aggregate stability and moisture content, decreases pH and density. Scientific literature notes that the creation of Robinia plantations in soils that have previously lost its forest cover provides an increase in the content and storage of soil organic carbon compared to the Caragana korshinskii plantations. According to our literature data, the most rational measure to increase the soil fertility is the creation of an effective system of protective forest plantations, which are characterized by a favorable integrated influence on the steppe soils.
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Kozlova, Alla, Natalya Martynova, Dmitry Perfiliev, and Ulyana Ludwig. "Chemodestructive fractionation of humus as an indicator of the functional state of soil organic matter." E3S Web of Conferences 371 (2023): 06010. http://dx.doi.org/10.1051/e3sconf/202337106010.

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The content, composition, and properties of humus are the most important characteristics that reflect the features of modern soil formation, the genesis and evolution of soils, and their agrogenic transformation. The main criteria for assessing soil fertility are traditionally the content and reserves of organic matter in soils. At the same time, the decrease in soil fertility is associated not so much with a decrease in the total content of humus, but with the loss of its labile forms, which determine the life of the soil, its most important agronomic properties and crop yields. One of the integral indicators characterizing the state and functioning of soil organic matter (SOM) is the ratio of stable and labile forms of organic compounds obtained by chemodestructive analysis. The determination of the bichromate oxidizability of humus showed that the virgin soils of the Southern Cis-Baikal region contain an equal amount of stable and labile forms of organic compounds. Accordingly, the humus in them is a stable and balanced system in relation to external influences. Plowing led to a significant decrease in the easily and hardly hydrolysable humus fractions. In the fallow areas, the upper part of the humus horizon, in terms of the ratio of humus fractions, approaches virgin soils, and the lower part approaches the arable horizons of agricultural soils. The method of permanganate oxidizability of humus revealed a noticeable enrichment in easily oxidizable forms of virgin and, especially, fallow soils of the region. Compared to them, agricultural soils contained noticeably less labile humus, which indicates a sharp decrease in their fertility.
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Bilanchyn, Yaroslav, Liudmyla Goshurenko, Iryna Leonidova, and Ihor Orlyk. "The humus condition of chornozem soils of Zmiiny island." Visnyk of the Lviv University. Series Geography, no. 41 (September 17, 2013): 24–37. http://dx.doi.org/10.30970/vgg.2013.41.1927.

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The results of Zmiiny island chornozem soils humus condition research is presented and characterized. Certain differences and regularities of the condition and composition of humus substances depending on geomorphological location, intensity and lithologicaly-chemestrial composition of the parent rocks, condition and rate of natural moistening of those soils are ascertained. It is recommended to use humus condition indicators of the researched soils in geo-genetic features, matters and regularities of soil and chornozem soil formation diagnostics, especially in case of uniquely specific landscapegeochemical environment of the island. Key words: Zmiiny island, chornozem soils, humus condition, optical density of humic acids, soil formation.
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Dissertations / Theses on the topic "Humus soil"

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Golchin, Ahmad. "Spatial distribution, chemistry and turnover of organic matter in soils." Title page, contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phg617.pdf.

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Copies of author's previously published works inserted. Bibliography: leaves 260-299. This thesis describes the concept of organic matter turnover and various methods to measure the decay rates of organic materials in the soil. Methods are developed to separate SOM from different locations within the soil matrix. Free particulate organic matter (POM), located between or outside the soil aggregates is isolated. Occluded POM is disaggregeted by sonification. The compositional differences noted among the three components of SOM are used to describe the changes that OM undergoes during decomposition. The process is followed as organic matter enters the soil, is enveloped in aggregates and is eventually incorporated into the microbial biomass and metabolites then becoming associated with clay minerals.
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Pietikäinen, Janna. "Soil microbes in boreal forest humus after fire." Helsinki : University of Helsinki, 1999. http://ethesis.helsinki.fi/julkaisut/maa/mekol/vk/pietikainen/.

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Nelson, Paul Netelenbos. "Organic matter in sodic soils : its nature, decomposition and influence on clay dispersion." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phn4281.pdf.

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Bibliography: leaves 147-170. Aims to determine the influence of sodicity on the nature and decomposition of organic matter; and the influence of organic matter and its components on the structural stability of sodic soils.
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Christensen, Bent T. "Organic matter in soil : structure, function and turnover /." Tjele : Danish institute of agricultural sciences. Research centre Foulum, 2000. http://catalogue.bnf.fr/ark:/12148/cb388316309.

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Dinel, H. (Henri) 1950. "The influence of soil organic matter components on the aggregation and structural stability of a lacustrine silty clay /." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74306.

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Under intensive farming, soil structure degradation and soil erosion are primarily associated with losses of organic matter. Restoration of soil structure may depend on the amount and nature of the organic amendment added. The effect of the addition of humic and fibric materials, and beeswax, a naturally occurring source of long-chain aliphatics comparable to those present in humic materials, on microbial activity and the structural properties of a waterlogged silty clay low in organic carbon was investigated. The incorporation of the fibric material increased the microbial activity in proportion to the amount of material added, whereas the humic and beeswax materials had the opposite effect. All organic materials added increased the cohesion of aggregates due to non water-dispersible cements. The fibric material was predominantly composed of polysaccharides and large quantities were required to produce a positive effect. The humic material was mainly lipids and the effect was associated with the time of incubation rather than the amount of material added. Principal-component analysis showed that the humic material was more effective at stabilizing soil aggregates than the fibric material, although the fibric material had a greater effect on the resistance of aggregates to slaking forces. Further testing with beeswax showed that the clay-associated lipids increased by 3.5-4.0 times the resistance of soil aggregates to the slaking forces, whereas the effect of hydrophobic "free" lipids was transient and accessory by coating and embedding soil aggregates.
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Crawford, Michael Cameron. "Quantification of the belowground inputs of organic carbon by the annual pasture legume barrel medic (Medicago truncatula Gaertn.)." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phc8988.pdf.

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Bibliography: leaves 164-193. This study aims to quantify the belowground input of organic carbon by barrel medic using techniques that account for root death and decomposition as well as root secretion and exudation. It also investigates the effect of defoliation on carbon allocation within the plant so as to determine the potential for optimising carbon input to the soil through grazing management.
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Mastrolonardo, Giovanni. "The impact of wildfires on the abundance, composition and recalcitrance of soil organic matter." Paris 6, 2013. http://www.theses.fr/2013PA066117.

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Fire affects more land surfaces than any other natural disturbance. It is a major driving factor in forest ecosystems formation and evolution. It has a strong impact on soil organic matter, primarily by changing its abundance. Also, soil organic matter composition is substantially affected by fire. During the combustion, many reactions take place, leading to the formation of thermally condensed aromatic compounds characterised by high recalcitrance. However, there are still many uncertainties and contrasting results dealing with fire-induced changes in soil organic matter abundance, composition and recalcitrance. The aims of this study were : (i) assessing the immediate impact of two wildfires of different severity on soil organic matter composition and abundance; (ii) evaluating the complementary application of thermal and spectroscopic techniques to assess fire-induced changes to soil organic matter; (iii) estimating the long-term effect of a high fire frequency on soil organic matter composition and stability. This investigation provided useful information and contributes to the understanding of the overall impact of fire on soil organic matter. To carry out this study, we selected some forest sites that have been affected by one more recent or past wildfires<br>Les feux de forêt affectent une surface plus grande que n'importe quelle autre perturbation naturelle. Il s'agit d'un facteur majeur dans la formation et l'évolution des écosystèmes forestiers. Le feu provoque des forts impacts sur ​​les matières organiques des sols, notamment sur leur teneur et composition. Lors de la combustion, plusieurs réactions chimiques ont lieu qui conduisent à la production des nouveaux composés aromatiques condensés thermiquement caractérisés par leur récalcitrance chimique. Il existe encore de nombreuses incertitudes et résultats contradictoires en ce qui concerne les effets du feu sur l'abondance, la composition et récalcitrance des matières organiques du sol. Le but de cette recherche était : (i) d'attester des impacts immédiats de deux feux de forêt de sévérités différentes sur la composition et l'abondance de la matière organique du sol ; (ii) évaluer l'application complémentaire de techniques thermiques et spectroscopiques afin d'attester les changements induits par le feu sur la matière organique du sol ; (iii) estimer les effets à long terme d'une fréquence importante de feux sur la composition et la stabilité de la matière organique du sol. La recherche prédentée ici fournit des données utiles pour la compréhension des impacts du feu sur les matière organique du sol. Nous avons sélectionné ici des sites forestiers affectés par un ou plusieurs incendies récemment incendies ou dans le passé
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Göbel, Marc-Oliver. "Impact of solid surface wetting properties on soil physical processes relevant for organic matter decomposition." Tönning Lübeck Marburg Der Andere Verl, 2007. http://d-nb.info/984748709/04.

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Kim, Jong-Soo. "Characteristics of humic substances and their removal behavior in water treatment." Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/21469.

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Klinka, Karel, Jaume Fons, and Christine Chourmouzis. "Nutrient and biotic properties of mormoder and leptomoder humus forms in the coastal western hemlock zone." Forest Sciences Department, University of British Columbia, 1997. http://hdl.handle.net/2429/718.

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In British Columbia, humus form identification is widely use to infer the level of plant-available soil nutrients. This identification is based on field-observable (morphological) features. We recognize three major humu forms: Mors, Moders, and Mulls - which are differentiated according to the type of F horizon, and the presence/absence of organic matter-enriched Ah horizons. Mors represent humus forms where decomposition is dominated by fungi, with slow decomposition rates and accumulations of organic matter on the soil surface. Mors are characterized by the presence of a Fm (m - mycogenous) horizon. In contrast, Mulls represent humus forms with high rates of decomposition and faunal activity resulting in organic matter being intimately incorporated into the upper mineral soil layer instead of accumulating on its surface. Intermediate on the humus form gradient from Mors to Mull are the Moders. Moders are similar to Mors in that they have accumulations of organic matter on the surface of the mineral soil but decomposition is not fungus dominated, so they lack the diagnostic Fm horizon. The central concept of the Moder is represented by the Leptomoder, which is characterized by a Fz (z - zoogenous) horizon with an active population of soil meso- and microfauna, fungal mycelia are not present or present in small amounts. When both fungal mycelia and faunal droppings can be found, but neither clearly predominate over the other, an Fa (a - amphimorphic) horizon results. Fa horizons are characteristic of Mormoders, an integrade between Mors and Moders. Considering the prevalence of Mormoders and Leptomoders in B.C. and the difficulties in identifying Fa horizons, the aim of this study was to determine whether the morphological features used to differentiate these two Moder humus forms reflects differences in their physical, chemical and biotic properties.
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Books on the topic "Humus soil"

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M, Schnitzer, and Khan Shahamat U, eds. Soil organic matter. Elsevier Scientific Pub. Co., 1985.

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Stevenson, F. J. Humus chemistry: Genesis, composition, reactions. 2nd ed. Wiley, 1994.

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Hänninen, Kari. Phenolic acids in humus chemistry. Suomalainen Tiedeakatemia, 1987.

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Magdoff, Fred. Building soils for better crops: Sustainable soil management. 3rd ed. Sustainable Agriculture Research and Education Program, 2009.

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Vityakon, Patma. Soil organic matter and soil quality in Northeast Thailand. Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, 2011.

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Magdoff, Fred. Building soils for better crops: Sustainable soil management. 3rd ed. Sustainable Agriculture Research and Education Program, 2009.

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Szegi, J. Cellulose decomposition and soil fertility. Akadémiai Kiadó, 1988.

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Mamontov, Vladimir. Soil chemistry: a practical course. INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/1079438.

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The textbook describes methods for analyzing the elemental composition of the mineral part of soils, ways to express the results of gross analysis and recalculation of analytical data. Methods for studying the ion-salt complex of soils and available forms of plant nutrition elements, as well as methods used to determine the total humus and nitrogen, group and fractional composition of humus, and methods for studying some properties of humic acids are presented. The use of gross analysis data, the results of studying the ion-salt complex and soil organic matter for practical purposes is considered.&#x0D; Meets the requirements of the federal state educational standards of higher education of the latest generation.&#x0D; It is addressed to students of higher educational institutions studying at the faculties of soil Science, agrochemistry and ecology in the field of training "Agrochemistry and agro-soil science", as well as graduate students and researchers specializing in soil science, agrochemistry, ecology and agronomy.
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Voldseth, Richard. Ten-year results from the Long-Term Soil Productivity Study in aspen ecosystems of the northern Great Lakes region. U.S. Dept. of Agriculture, Forest Service, Northern Research Station, 2011.

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Darwin, Charles. The formation of vegetable mould through the action of worms: With observations on their habits. Cambridge University press, 2010.

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Book chapters on the topic "Humus soil"

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Reetsch, Anika, Didas Kimaro, Karl-Heinz Feger, and Kai Schwärzel. "Traditional and Adapted Composting Practices Applied in Smallholder Banana-Coffee-Based Farming Systems: Case Studies from Kagera and Morogoro Regions, Tanzania." In Organic Waste Composting through Nexus Thinking. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36283-6_8.

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AbstractIn Tanzania, about 90% of the banana-coffee-based farming systems lie in the hands of smallholder farmer families. In these systems, smallholder farmers traditionally add farm waste to crop fields, making soils rich in organic matter (humus) and plant-available nutrients. Correspondingly, soils remained fertile during cultivation for over a century. Since the 1960s, the increasing demand for food and biofuels of a growing population has resulted in an overuse of these farming systems, which has occurred in tandem with deforestation, omitted fallows, declined farm size, and soil erosion. Hence, humus and nutrient contents in soils have decreased and soils gradually degraded. Inadequate use of farm waste has led to a further reduction in soil fertility, as less organic material is added to the soils for nutrient supply than is removed during harvesting. Acknowledging that the traditional use of farm waste successfully built up soil fertility over a century and has been reduced in only a few decades, we argue that traditional composting practices can play a key role in rebuilding soil fertility, if such practices are adapted to face the modern challenges. In this chapter, we discuss two cases in Tanzania: one on the traditional use of compost in the Kagera region (Great African Rift Valley) and another about adapted practices to produce compost manure in the Morogoro region (Uluguru Mountains). Both cases refer to rainfed, smallholder banana-coffee-based farming systems. To conclude, optimised composting practices enable the replenishment of soil nutrients, increase the capacity of soils to store plant-available nutrients and water and thus, enhance soil fertility and food production in degraded banana-coffee-based farming systems. We further conclude that future research is needed on a) nutrient cycling in farms implementing different composting practices and on b) socio-economic analyses of farm households that do not successfully restore soil fertility through composting.
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Rusu, A. L., and V. Plǎmǎdealǎ. "Rationale for Maintaining Humus in Arable Soils of Moldova." In Soil as World Heritage. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6187-2_35.

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Moskaltchuk, L. N. "Using Humus Indices For The Assessment of Soil Quality and Soil Vulnerability." In Soil & Environment. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2008-1_60.

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Indoitu, D. M., and D. Indoitu. "Humus Dynamics and Efficiency of Crop Rotations on Calcareous and Common Chernozem." In Soil as World Heritage. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6187-2_27.

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Kõlli, Raimo, Mait Lang, Reimo Lutter, Tõnu Tõnutare, Karin Kauer, and Kaire Rannik. "Spatial Estimation of Estonian Forest Landscapes’ Soil Cover Humus Status: Methods, Model Samples and Assessments." In Innovations in Landscape Research. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37421-1_13.

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Pronko, Nina A., Viktor V. Korsak, Lubov G. Romanova, and Alexandr S. Falkovich. "Changes in the Composition and Dynamics of Soil Humus and Physical Properties in Dark Chestnut Soils of Trans-Volga Dry Steppes After 75 and 35 years of Irrigation Agriculture." In Advances in Understanding Soil Degradation. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-85682-3_28.

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Shishkov, Toma, and Nikola Kolev. "Rendzinas (Humus-Calcareous) Soils." In World Soils Book Series. Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-7784-2_14.

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Schwarzer, Stefan, and Hans Peter Schmidt. "Humus Enrichment of Soils." In 3 Degrees More. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-58144-1_10.

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Mallik, Azim U. "Linking ecosystem disturbance with changes in keystone species, humus properties and soil chemical ecology: implications for conifer regeneration with ericaceous understory." In Chemical Ecology of Plants: Allelopathy in Aquatic and Terrestrial Ecosystems. Birkhäuser Basel, 2002. http://dx.doi.org/10.1007/978-3-0348-8109-8_9.

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Zavala, S., A. Da Cruz, J. Zavala, S. Camargo, and N. Balbin. "Effect of Compost and Humus of Organic Solid Waste on the Reduction of Cadmium in the Soil and in Different Organic of Seedlings Theobroma cacao (CACAO) in Nursery." In Environmental Science and Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-9440-1_5.

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Conference papers on the topic "Humus soil"

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Shishkov, Toma, Emil Dimitrov, and Ekaterina Filchev. "FOREST SOILS FROM SREDNA GORA MOUNTAIN IN BULGARIA." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/3.1/s13.29.

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The soils from the central part of Sredna Gora Mountain in Bulgaria were studied aiming to establish the occurrence of contemporal soil forming processes occured in the forest ecosystem. Soils were analyzed to determine the carbon content, the soil organic matter composition and the total soil acidity. The precise soil classification based on the detail morphological diagnostic was carried out. The ecological conditions in forest ecosystem determine the mode of humic substances in the studies soils. Soils are characterized with low degree of humification and considerable amount of organic matter only on the soil surface. Generally, large proportion of absorbed nutrients is returned annually to the soil and is reabsorbed after biological breakdown of litter. Forest soils considerably differ by the soil organic matter (SOM) composition. The quantity and quality of humic substances is linked to the important soil functions. Humic acids are mainly in the upper part in the first soil and fulvic acids dominated in the lower part of profile. Humic acids in the second soil are bounded with calcium and composing humic type of humus. In the shallow soil, formed on the hard rock, the fulvic acids dominate that composing the fulvic type of humus. In the studied forest ecosystem the advanced natural soil acidification occurs mainly in the most upper part of soils.
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Rashkovich, Vasily, Dmitry Rukhovich, and Dmitri Borschev. "MULTITEMPORAL SPECTRAL CHARACTERISTICS OF INTRAFIELD SOIL FERTILITY HETEROGENITY ZONES OF NORTHERN KAZAKHSTAN ARABLE LANDS." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/3.1/s13.32.

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New methods for assessing soil cover heterogeneity, based on the analysis of extensive satellite data using neural network filtering technologies, were implemented to evaluate the territory of northern Kazakhstan. A comparative analysis of the quality of soil cover structure (SCS) determination, using remote sensing data, was conducted using two different methods. The first method is indirect and involves determining the SCS by analyzing and aggregating multitemporal vegetation indices (MVI). The second method is unique and involves determining the spectral neighborhood of the soil line in RED-NIR space. The soils in the study area are characterized by southern chernozems with varying thickness and humus content. The heterogeneity of the soil cover is largely influenced by the microrelief of the terrain. Soils on watershed and upland surfaces are typically eroded and less moist, resulting in reduced thickness and lower humus content compared to soils located on slopes and in depressions. Field research established a relationship between SCS, MVI, and open soil surface (OSS). The reliability and accuracy of the developed OSS method, when applied to the soils of northern Kazakhstan, were confirmed. The structure of the soil cover is crucial for agriculture, especially in conditions of moisture deficiency in the dry steppe zone. The determination of soil heterogeneity using the OSS method represents a powerful new tool for creating a cartographic basis for precision agriculture. Utilizing OSS maps as the basis for task maps, differentiated fertilizer application in the studied area demonstrated high effectiveness, resulting in a threefold increase in lentil yield.
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Grigorova-Pesheva, Bilyana, Boyka Malcheva, and Biser Hristov. "SEASONAL DYNAMICS IN THE MICROBIOLOGICAL STATUS OF FOREST SOILS FROM THE TERRITORY OF VITOSHA NATURE PARK." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/3.1/s13.35.

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The health, richness, and variety of microbial life in soil represent basic indicators for the evaluation and surveillance of forest ecosystem vitality. The vital role these microorganisms occupy in forest ecosystems underscores the necessity to in-depth assess and monitor their populations within soil habitats. Aiming to deepen our comprehension of microbial communities across different soils and soils horizons, we conducted an investigation of 22 soil profiles situated within the territory of Vitosha Nature Park. The investigation was carried out in one year period. We took samples from each of the studied soils during each of the seasons - spring, summer, autumn and winter. The following soil parameters were evaluated - pH, total nitrogen and humus for each soil horizon. From the microbiological indicators, the amounts of the main microbiological groups (non-spore-forming bacteria, bacilli, microscopic fungi and actinomycetes) were analyzed. Based on these data, the biogenicity of the soil was determined, as well as the percentage participation of individual groups compared to the total microbial number. Two clear peaks in the biogenicity of the studied soils were found - in spring and autumn. The dynamics of microorganisms in relation to change in altitude was reported. There is a correlation between the pH of the medium and the amount of microscopic fungi. Soils under broad-leaved vegetation stand out with higher biogenicity than soils under coniferous vegetation, in all seasons except winter.
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Borshchev, Dmitry, Dmitry Rukhovich, and Vasily Rashkovich. "SPECTRAL CHARACTERISTICS OF GROUPS AND TYPES OF LANDS, CONSTRUCTED BY AVERAGIN LONG-TERM SERIES OF VEGETATION INDECES." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/3.1/s13.38.

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The optimal solution of intensification and ecologisation of agricultural production is achieved in adaptive-landscape farming systems. To solve the problems of adaptive landscape agriculture, classical methods of soil-landscape mapping and new methods of remote diagnostics of intra-field heterogeneity were combined to identify features that will further improve the efficiency of producing maps of groups and types of land and increase their accuracy. Identification of the spectral characteristics of groups and types of land has become possible due to neural network filtering of big remote sensing data. By intersecting the map of groups and types of lands with the bare soil surface map in geographical information systems, the median values of the �C� coefficient for different land groups and types were calculated. Each agroecological group of lands has its own spectral characteristics, which are influenced by the granulometric composition, moisture regime and humus content. It was established for the first time that groups of lands differing in productivity have different reflectivity. Differences in spectral characteristics of land groups can be used for their remote diagnostics, quantitative assessment, and design of systems to improve low-productive areas.
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Samofalova, I. "AGROECOLOGICAL ASSESSMENT OF THE BALANCE OF HUMUS AND NUTRIENT ELEMENTS IN SOILS OF THE NON-CHERNOZEM ZONE." In «PROBLEMS OF SOIL FERTILITY IN MODERN AGRICULTURE». Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS, 2024. http://dx.doi.org/10.52686/9785605087878_126.

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The balance of humus in soils on the farm territory was calculated for a slope steepness of 20-40 without the use of organic fertilizers. The balance of humus and nutrients is negative. The greatest losses of humus occur under pure fallow and row crops, more due to mineralization than as a result of erosion. The farm territory is not stable in terms of humus balance and supply of nutrients. Zonal lands are the most stable.
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Kurachenko, N., and A. Kolesnik. "HUMUS STATE OF AGROCHERNOZEMS OF THE CHULYM-YENISEI FOREST-STEPPE AFTER DEVELOPMENT OF LONG-FALLOW LAND." In «PROBLEMS OF SOIL FERTILITY IN MODERN AGRICULTURE». Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS, 2024. http://dx.doi.org/10.52686/9785605087878_73.

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In a field experiment, the humus state of agrochernozems was studied after the development of a 27-year-old turf long-fallow lands. It has been shown that the involvement of fallow land in agricultural circulation contributes to the accumulation of humus in the second and third years after plowing of plant residues (6880-6541 mgC/100g) and contributes to an increase in the content of alkali-hydrolyzable humus compounds by 1.6 times during the first year of functioning of the agrocenosis.
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Mudryh, N. "THE SPATIAL VARIATION OF HUMUS CONTENT IN THE SOILS WITH DIFFERENT ANTHROPOGENIC LOAD." In «PROBLEMS OF SOIL FERTILITY IN MODERN AGRICULTURE». Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS, 2024. http://dx.doi.org/10.52686/9785605087878_81.

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An assessment was made of the spatial variation of humus content in soils of lands of different agricultural use. The objects were the soils of the cultivated field and fallow land for more than 15 years. It was established that the humus content in the soils on the arable land was 1.4-3.5% (V = 15.5-33.9%), fallow land - 1.6-3.3% (V = 17.0-34.8%). Taking a field out of production for 15 years does not lead to mathematically proven changes in the humus content in soils.
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Kozlova, A., U. Lyudvig, and V. Makkoveeva. "CHERNOZEMS OF THE SOUTH BAIKAL REGION, THEIR AGRO- AND POSTAGROGENIC TRANSFORMATION." In «PROBLEMS OF SOIL FERTILITY IN MODERN AGRICULTURE». Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS, 2024. http://dx.doi.org/10.52686/9785605087878_65.

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The chernozems of the Southern Baikal region belong to the facies subtype of moderately cold, long-term freezing soils. Therefore, the thickness of their humus horizon is limited by a half-meter thickness and low humus content and reserves. Intensive plowing of chernozems has led to a significant reduction in its thickness to the level of plowing depth. The content and reserves of humus have noticeably decreased compared to virgin soil. Removing the agrogenic impact helps restore the fertility of agrochernozems, but the process of their regeneration in the extremely continental climate of the Southern Baikal region is greatly inhibited.
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"Humus and carbon sequestration technologies in soil." In Seventh International Conference on Humic Innovative Technologies "Humic substances and technologies for resilience" (HIT – 2022). NP CBR "Humus Sapiens", 2022. http://dx.doi.org/10.36291/hit.2022.006.

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КОЗЛОВА А, А., И. ЛЮДВИГ У, А. ПРИСТАВКА А, and Д. УТКИНА А. "MAGNETIC SUSCEPTIBILITY OF SOILS IN THE SOUTH BAIKAL REGION COMPLICATED BY PALEOCRYOGENESIS." In ГЕОЛОГИЯ И МИНЕРАЛЬНО-СЫРЬЕВЫЕ РЕСУРСЫ СЕВЕРО-ВОСТОКА РОССИИ 2024. Crossref, 2024. http://dx.doi.org/10.53954/9785604990100_462.

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The article presents a study of the magnetic susceptibility of soils as a diagnostic indicator of pedogenesis processes. The dependences of this indicator on other soil properties, such as electrical resistivity, soil acidity, content of humus and exchangeable cations, carbonates, silt and physical clay, gross iron, and soil age have been revealed. A positive relationship has been established between the magnetic susceptibility of soils and the content of carbonates, exchangeable bases, physical clay and silt. Moreover, in the depressions of paleocryogenic complexes there were more positive connections between magnetic susceptibility and soil properties than on the mounds. They also showed a close relationship with humus and soil age. A negative dependence appeared for acidity and exchangeable hydrogen. In all soils, magnetic susceptibility was found to have the closest positive relationship with soil electrical resistivity.
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Reports on the topic "Humus soil"

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Перерва, Віталій Григорович, Олексій Миколайович Сметана, Вікторія Вікторівна Перерва та Вікторія Вікторівна Прилипко. Вміст, запаси та груповий склад гумусу в грунтах промділянки металургійного комбінату ВАТ „Міттал Стіл Кривий Ріг. Інститут екології Карпат НАН України, 2006. http://dx.doi.org/10.31812/123456789/4234.

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У статті розглядаються особливості накопичення гумусу в грунтах промислових майданчиків промислового підприємства. Визначено концентрацію, запаси та груповий склад гумусу в досліджуваних ґрунтах. Показники гумусового стану досліджених ґрунтів свідчать, що вони розвиваються за наближеним до зонального типом, хоча й мають ряд специфічних рис, пов’язаних з особливостями морфології профілю ґрунту. In the article the features of humus accumulation in soils of industrial area of large industrial enterprise were considered. Concentration, supplies and group composition of humus in the explored soils were determined. The indexes of the humus state of investigational soils testify that they develop after close to zonal by type, and have the row of specific lines of tied-up by the features of morphology of type of soil.
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Hall, G. E. M., A. I. MacLaurin, and J. E. Vaive. Readsorption of gold during the selective extraction of the 'soluble organic' phase of humus, soil, and sediment samples. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207588.

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Minore, Don, and Howard G. Weatherly. Yarding-method and slash-treatment effects on compaction, humus, and variation in plantation soils. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1988. http://dx.doi.org/10.2737/pnw-rn-476.

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Hall, G. E. M., J. E. Vaive, A. I. MacLaurin, and M. Hoashi. Selective leaching of the labile organic component of humus and soils with sodium pyrophosphate solution. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207587.

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Formation of a deficit-free balance of soil humus as a necessary condition for improving crop rotation in the forest-steppe zone of the European part of the Russian Federation. FGBOU VO Kursk State Agricultural Academy, Journal Bulletin of the Kursk State Agricultural Academy, 2020. http://dx.doi.org/10.18411/issn1997-0749.2020-05-01.

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Membrane-micelle model for humus in soils and sediments and its relation to humification. US Geological Survey, 1994. http://dx.doi.org/10.3133/wsp2410.

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