Pub Date : 2024-05-01DOI: 10.1134/s1064229323603645
N. Tsepina, S. Kolesnikov, T. Minnikova, A. Ruseva, D. Trufanov, K. Kazeev
{"title":"Assessment of Ecotoxicity of Silver Particles Different in Size according to Biological Indicators in Haplic Chernozem","authors":"N. Tsepina, S. Kolesnikov, T. Minnikova, A. Ruseva, D. Trufanov, K. Kazeev","doi":"10.1134/s1064229323603645","DOIUrl":"https://doi.org/10.1134/s1064229323603645","url":null,"abstract":"","PeriodicalId":11892,"journal":{"name":"Eurasian Soil Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141054576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.1134/s1064229323603682
V. N. Golosov, E. N. Shamshurina, G. I. Kolos, A. I. Petel’ko, A. Zhidkin
{"title":"Spatiotemporal Changes in the Erosion and Deposition Processes in a Small Catchment in the North of the Central Russian Upland","authors":"V. N. Golosov, E. N. Shamshurina, G. I. Kolos, A. I. Petel’ko, A. Zhidkin","doi":"10.1134/s1064229323603682","DOIUrl":"https://doi.org/10.1134/s1064229323603682","url":null,"abstract":"","PeriodicalId":11892,"journal":{"name":"Eurasian Soil Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141044668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.1134/s1064229323603700
A. F. Osipov, V. Startsev, A. Dymov
{"title":"Influence of Clear Felling on СО2 Emission from Surface of Podzolic Soil of Coniferous–Deciduous Forest (Middle Taiga, Komi Republic)","authors":"A. F. Osipov, V. Startsev, A. Dymov","doi":"10.1134/s1064229323603700","DOIUrl":"https://doi.org/10.1134/s1064229323603700","url":null,"abstract":"","PeriodicalId":11892,"journal":{"name":"Eurasian Soil Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141027295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.1134/s1064229323603669
N. Gorbach, E. V. Yakovleva, A. Dymov
{"title":"Influence of Combustion Temperature and Composition of Organic Soil Horizons on the PAH Content (Laboratory Experiment)","authors":"N. Gorbach, E. V. Yakovleva, A. Dymov","doi":"10.1134/s1064229323603669","DOIUrl":"https://doi.org/10.1134/s1064229323603669","url":null,"abstract":"","PeriodicalId":11892,"journal":{"name":"Eurasian Soil Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141028393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-16DOI: 10.1134/s1064229323603116
Yu. N. Krasnoshchekov
Abstract
We have studied geochemical features of organo-accumulative soils (Eutric Regosols (Loamic, Ochric)), Cambic Someric Phaeozems (Loamic)) widely spread in the soil cover of subtaiga and subtaiga-forest-steppe light coniferous forests and forming the lower boundary of the forest zone in the mountains of Northern Mongolia. Data on the microelement composition of soil-forming rocks are given; the paragenetic association of trace elements in them is composed of Pb, Cu, Zn, Co, V, Cr, Ni, Mn, Mo, Ba, Sr, Zr, and B. The residual and redeposited weathering crusts of igneous rocks are enriched with Zn, Cr, Mo, and B as compared to the mean content of these elements in the lithosphere, but they contain less Pb, Co, Mn, Ba, Sr, and Zr. The residual and re-deposited weathering crusts of calcareous rocks are enriched in Pb, Cu, Zn, V, Cr, Sr, and B, and are impoverished in Co, Ni, Mn, Mo, Ba, and Zr. The morphological, physicochemical and chemical properties of soils, as well as the content and radial distribution of trace elements in soils are discussed. The data obtained testify to the accumulation of most trace elements in the surface organic and humus-accumulative soil horizons. This is associated with the heterogeneity of soil-forming rocks and with the effect of soil processes, which cause the accumulative redistribution of elements and their deposition at organic-sorption and carbonate geochemical barriers. It is shown that the studied soils differ not only in the absolute contents of trace elements, participating in the biological cycle, but also in the intensity of their involvement in biogenic migration.
{"title":"Geochemical Features of Organo-Accumulative Soils of Subtaiga and Subtaiga–Forest-Steppe Light Coniferous Forests of Northern Mongolia","authors":"Yu. N. Krasnoshchekov","doi":"10.1134/s1064229323603116","DOIUrl":"https://doi.org/10.1134/s1064229323603116","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>We have studied geochemical features of organo-accumulative soils (Eutric Regosols (Loamic, Ochric)), Cambic Someric Phaeozems (Loamic)) widely spread in the soil cover of subtaiga and subtaiga-forest-steppe light coniferous forests and forming the lower boundary of the forest zone in the mountains of Northern Mongolia. Data on the microelement composition of soil-forming rocks are given; the paragenetic association of trace elements in them is composed of Pb, Cu, Zn, Co, V, Cr, Ni, Mn, Mo, Ba, Sr, Zr, and B. The residual and redeposited weathering crusts of igneous rocks are enriched with Zn, Cr, Mo, and B as compared to the mean content of these elements in the lithosphere, but they contain less Pb, Co, Mn, Ba, Sr, and Zr. The residual and re-deposited weathering crusts of calcareous rocks are enriched in Pb, Cu, Zn, V, Cr, Sr, and B, and are impoverished in Co, Ni, Mn, Mo, Ba, and Zr. The morphological, physicochemical and chemical properties of soils, as well as the content and radial distribution of trace elements in soils are discussed. The data obtained testify to the accumulation of most trace elements in the surface organic and humus-accumulative soil horizons. This is associated with the heterogeneity of soil-forming rocks and with the effect of soil processes, which cause the accumulative redistribution of elements and their deposition at organic-sorption and carbonate geochemical barriers. It is shown that the studied soils differ not only in the absolute contents of trace elements, participating in the biological cycle, but also in the intensity of their involvement in biogenic migration.</p>","PeriodicalId":11892,"journal":{"name":"Eurasian Soil Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140610051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-16DOI: 10.1134/s1064229323603189
D. A. Nikitin, L. V. Lysak, E. P. Zazovskaya, N. S. Mergelov, S. V. Goryachkin
Abstract
Microbial biomass, diversity of culturable bacteria and micromycetes, and the number of functional nitrogen cycle genes in the supraglacial systems of the Aldegonda and Bertil glaciers have been studied. The biomass of microorganisms varies from 2.54 to 722 µg/g substrate. It is shown for the first time that the major part (78.7–99.8%) of microbial biomass in supraglacial objects is represented by fungi rather than by prokaryotes, and the main part (70 to 90%) of the fungal biomass consists of mycelium with the length varying from 6.70 to 537.51 m/g substrate. The counts of prokaryotes vary from 2.4 × 108 to 1.95 × 109 cells/g substrate. The length of actinomycete mycelium falls into the range of 2.6–62.61 m/g substrate. The counts of culturable bacteria and actinomycetes vary from 3.3 × 104 to 1.2 × 106 CFU/g substrate and of micromycetes, from 2.2 × 101 to 1.7 × 104 CFU/g substrate. Bacteria of the genera Arthrobacter, Bacillus, Rhodococcus, Streptomyces and micromycetes of the genera Antarctomyces, Cadophora, Hyphozyma, Teberdinia and Thelebolus are dominants. The micromycetes Antarctomyces psychrotrophicus, Hyphozyma variabilis and Teberdinia hygrophila are found in Svalbard for the first time. The copy number of amoA genes in ammonium-oxidizing bacteria varies from 5.33 × 106 to 4.86 × 109/g substrate; of nitrogen fixation genes nifH, from 9.89 × 107 to 9.81 × 1010/g substrate; and denitrification genes nirK, from 4.82 × 107 to 3.34 × 1010/g substrate. These results indirectly suggest the leading role of fungi in the microbiome of the supraglacial objects in Svalbard and a considerable contribution of prokaryotes to the emission of greenhouse gases there.
{"title":"Microbiome of Supraglacial Systems on the Aldegonda and Bertil Glaciers (Svalbard)","authors":"D. A. Nikitin, L. V. Lysak, E. P. Zazovskaya, N. S. Mergelov, S. V. Goryachkin","doi":"10.1134/s1064229323603189","DOIUrl":"https://doi.org/10.1134/s1064229323603189","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Microbial biomass, diversity of culturable bacteria and micromycetes, and the number of functional nitrogen cycle genes in the supraglacial systems of the Aldegonda and Bertil glaciers have been studied. The biomass of microorganisms varies from 2.54 to 722 µg/g substrate. It is shown for the first time that the major part (78.7–99.8%) of microbial biomass in supraglacial objects is represented by fungi rather than by prokaryotes, and the main part (70 to 90%) of the fungal biomass consists of mycelium with the length varying from 6.70 to 537.51 m/g substrate. The counts of prokaryotes vary from 2.4 × 10<sup>8</sup> to 1.95 × 10<sup>9</sup> cells/g substrate. The length of actinomycete mycelium falls into the range of 2.6–62.61 m/g substrate. The counts of culturable bacteria and actinomycetes vary from 3.3 × 10<sup>4</sup> to 1.2 × 10<sup>6</sup> CFU/g substrate and of micromycetes, from 2.2 × 10<sup>1</sup> to 1.7 × 10<sup>4</sup> CFU/g substrate. Bacteria of the genera <i>Arthrobacter, Bacillus, Rhodococcus</i>, <i>Streptomyces</i> and micromycetes of the genera <i>Antarctomyces, Cadophora, Hyphozyma, Teberdinia</i> and <i>Thelebolus</i> are dominants. The micromycetes <i>Antarctomyces psychrotrophicus, Hyphozyma variabilis</i> and <i>Teberdinia hygrophila</i> are found in Svalbard for the first time. The copy number of <i>amoA</i> genes in ammonium-oxidizing bacteria varies from 5.33 × 10<sup>6</sup> to 4.86 × 10<sup>9</sup>/g substrate; of nitrogen fixation genes <i>nifH,</i> from 9.89 × 10<sup>7</sup> to 9.81 × 10<sup>10</sup>/g substrate; and denitrification genes <i>nirK</i>, from 4.82 × 10<sup>7</sup> to 3.34 × 10<sup>10</sup>/g substrate. These results indirectly suggest the leading role of fungi in the microbiome of the supraglacial objects in Svalbard and a considerable contribution of prokaryotes to the emission of greenhouse gases there.</p>","PeriodicalId":11892,"journal":{"name":"Eurasian Soil Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140610242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-16DOI: 10.1134/s1064229323603293
A. P. Zhidkin, D. I. Rukhovich, K. A. Maltsev, P. V. Koroleva
Abstract
Current medium- and small-scale estimates of soil erosion in Russia are very few. At the same time, a favorable situation has now developed for assessing the rates and volumes of soil erosion losses. Erosion models adapted to available digital elevation models, various farmland maps, and climate databases are now available to researchers. We have estimated the rates and volumes of soil erosion with the use of different maps of cropland: world cover from the European Space Agency (ESA WC), global land cover and land use from the University of Maryland (GLCLU), the official unified federal information system of agricultural land (UFIS AL) from the Ministry of Agriculture of the Russian Federation, and the original conventionally reference land cover map of Alekseevskii district of Belgorod oblast. It has been found that the UFIS AL map gives cropland areas close to the average from first three maps. Public access maps (ESA WC and GLCLU) give maximum and minimum estimates of cropland, respectively. A comparison with the conventionally reference large-scale map shows that the accuracy of the UFIS AL does not exceed 90%; the accuracy of ESA WC and GLCLU maps is 84 and 83%, respectively. The total area of cropland in Belgorod oblast varies slightly (from 1445 to 1586 thousand hectares), which is favorable for erosion modeling. Deviations from the average rates of soil erosion calculated using different maps of cropland in the region as a whole are up to 7%; for some districts, they reach 27%. Thus, current estimates of soil erosion at the regional level can be carried out with an error of at least 10–15% only as a result of the uncertainty in mapping the boundaries of cropland. For Russia as a whole, data on the area of cropland vary significantly: from 80 to 132 million hectares. Consequently, the use of existing maps of cropland can lead to significant uncertainties in soil erosion estimates averaged at the level of the subjects of the Russian Federation and large regions.
{"title":"Variation of Soil Erosion Estimates Based on Different Maps of Cropland in Belgorod Oblast, Russia","authors":"A. P. Zhidkin, D. I. Rukhovich, K. A. Maltsev, P. V. Koroleva","doi":"10.1134/s1064229323603293","DOIUrl":"https://doi.org/10.1134/s1064229323603293","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\u0000<b>Abstract</b>\u0000</h3><p>Current medium- and small-scale estimates of soil erosion in Russia are very few. At the same time, a favorable situation has now developed for assessing the rates and volumes of soil erosion losses. Erosion models adapted to available digital elevation models, various farmland maps, and climate databases are now available to researchers. We have estimated the rates and volumes of soil erosion with the use of different maps of cropland: world cover from the European Space Agency (ESA WC), global land cover and land use from the University of Maryland (GLCLU), the official unified federal information system of agricultural land (UFIS AL) from the Ministry of Agriculture of the Russian Federation, and the original conventionally reference land cover map of Alekseevskii district of Belgorod oblast. It has been found that the UFIS AL map gives cropland areas close to the average from first three maps. Public access maps (ESA WC and GLCLU) give maximum and minimum estimates of cropland, respectively. A comparison with the conventionally reference large-scale map shows that the accuracy of the UFIS AL does not exceed 90%; the accuracy of ESA WC and GLCLU maps is 84 and 83%, respectively. The total area of cropland in Belgorod oblast varies slightly (from 1445 to 1586 thousand hectares), which is favorable for erosion modeling. Deviations from the average rates of soil erosion calculated using different maps of cropland in the region as a whole are up to 7%; for some districts, they reach 27%. Thus, current estimates of soil erosion at the regional level can be carried out with an error of at least 10–15% only as a result of the uncertainty in mapping the boundaries of cropland. For Russia as a whole, data on the area of cropland vary significantly: from 80 to 132 million hectares. Consequently, the use of existing maps of cropland can lead to significant uncertainties in soil erosion estimates averaged at the level of the subjects of the Russian Federation and large regions.</p>","PeriodicalId":11892,"journal":{"name":"Eurasian Soil Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140610172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-16DOI: 10.1134/s1064229323603335
N. E. Kosheleva, E. M. Nikiforova, N. B. Zhaxylykov
Abstract
The pollution of the topsoil in the city of Baikal’sk (Irkutsk oblast) under the influence of industrial emissions and wastes of the Baikal Pulp and Paper Mill (BPPM) was studied. The contents of 16 individual polycyclic aromatic hydrocarbons (PAHs) in samples of urban and background soils taken during the soil geochemical survey in the summer of 2019 were analyzed. Relatively low contents of PAHs were found in lignin sludge from the BPPM and ash from the combined heat and power station (CHPS). The concentration of total PAHs in CHPS ash reaches 46 mg/kg with a predominance of low molecular weight compounds (the proportion of naphthalene and its homologues is 24% and 34% of the total PAHs, respectively). Among high molecular weight PAHs, 5-nuclear benzo(b)fluoranthene dominates (16%). In lignin sludge, the amount of PAHs is 7.16 mg/kg with a predominance of benzo(b)fluoranthene (83%). In soils of Baikal’sk, the mean total content of PAHs (38.4 mg/kg) is five times higher than the background content. In urban soils, 4–5-nuclear fluoranthene (61.1%) and benzo(b)fluoranthene (29.4%) prevail. This enables us to assign soil pollution to the fluoranthene type. Soils of the motor traffic (total content of PAHs is 105 mg/kg) and industrial (59.5 mg/kg) zones are most strongly polluted and display contrasting geochemical anomalies of PAHs. Land use zones of the city may be arranged in the following sequence with respect to the amount of PAHs: motor traffic > industrial > residential single-story > railway transport > residential multi-story > recreational zone. Several local anomalies with increased contents of PAHs form two large pollution halos in the west and east of the city. The leading factors in the accumulation of high molecular weight PAHs in soils include acid–alkaline conditions and soil organic matter, while the accumulation of low molecular weight polyarenes is mainly controlled by pH. The environmental hazard of pollution of Baikal’sk soils with polyarenes is by 83.5% related to benzo(b)fluoranthene.
{"title":"Ecological and Geochemical Assessment of the State of Soils in the City of Baikal’sk according to the Content of Polycyclic Aromatic Hydrocarbons","authors":"N. E. Kosheleva, E. M. Nikiforova, N. B. Zhaxylykov","doi":"10.1134/s1064229323603335","DOIUrl":"https://doi.org/10.1134/s1064229323603335","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The pollution of the topsoil in the city of Baikal’sk (Irkutsk oblast) under the influence of industrial emissions and wastes of the Baikal Pulp and Paper Mill (BPPM) was studied. The contents of 16 individual polycyclic aromatic hydrocarbons (PAHs) in samples of urban and background soils taken during the soil geochemical survey in the summer of 2019 were analyzed. Relatively low contents of PAHs were found in lignin sludge from the BPPM and ash from the combined heat and power station (CHPS). The concentration of total PAHs in CHPS ash reaches 46 mg/kg with a predominance of low molecular weight compounds (the proportion of naphthalene and its homologues is 24% and 34% of the total PAHs, respectively). Among high molecular weight PAHs, 5-nuclear benzo(b)fluoranthene dominates (16%). In lignin sludge, the amount of PAHs is 7.16 mg/kg with a predominance of benzo(b)fluoranthene (83%). In soils of Baikal’sk, the mean total content of PAHs (38.4 mg/kg) is five times higher than the background content. In urban soils, 4–5-nuclear fluoranthene (61.1%) and benzo(b)fluoranthene (29.4%) prevail. This enables us to assign soil pollution to the fluoranthene type. Soils of the motor traffic (total content of PAHs is 105 mg/kg) and industrial (59.5 mg/kg) zones are most strongly polluted and display contrasting geochemical anomalies of PAHs. Land use zones of the city may be arranged in the following sequence with respect to the amount of PAHs: motor traffic > industrial > residential single-story > railway transport > residential multi-story > recreational zone. Several local anomalies with increased contents of PAHs form two large pollution halos in the west and east of the city. The leading factors in the accumulation of high molecular weight PAHs in soils include acid–alkaline conditions and soil organic matter, while the accumulation of low molecular weight polyarenes is mainly controlled by pH. The environmental hazard of pollution of Baikal’sk soils with polyarenes is by 83.5% related to benzo(b)fluoranthene.</p>","PeriodicalId":11892,"journal":{"name":"Eurasian Soil Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140610363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-16DOI: 10.1134/s106422932360330x
Ya. O. Timofeeva, L. N. Purtova
Abstract—
The involving of organic compounds in accumulation of Ni, Co, Cu, Cr, and Pb by Fe–Mn nodules in agro-dark-humus podbels (Planosols (Aric)) under different types of long-term agrotechnical impact has been studied in the south of Primorskii region. The profile patterns of the level of SOC content in soils and in nodules indicate the active deposition of organic compounds in nodules in the lower parts of soil profiles in the of fallow and phytomeliorative variants of the experiment. Fulvic acids were noted to predominate in the composition of humus in the nodules in these variants. The long-term application of organic fertilizers contributed to the decrease of SOC incorporation into nodules and to the increase of the part of humic acids in nodules. Nodules were characterized by a high accumulation levels of Co and Pb in all variants of the experiment. Accumulation of Ni, Cr, and Cu was recorded in nodules from particular horizons of studied soils. The intensity of elements accumulation in nodules of different variants of the experiment varied. Accumulation of Ni was controlled by the content of Mn-containing compounds. Based on the analysis of relationships between the contents of SOC, compounds of Fe and Mn, and trace elements, the relative influence of Fe–containing and organic compounds in accumulation of all studied elements by nodules has been identified.
{"title":"Influence of Organic Compounds on Ni, Co, Cu, Cr, and Pb Accumulation by Nodules in Agro-Dark-Humus Podbels (Planosols) in the South of Primorskii Region","authors":"Ya. O. Timofeeva, L. N. Purtova","doi":"10.1134/s106422932360330x","DOIUrl":"https://doi.org/10.1134/s106422932360330x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\u0000<b>Abstract</b>—</h3><p>The involving of organic compounds in accumulation of Ni, Co, Cu, Cr, and Pb by Fe–Mn nodules in agro-dark-humus podbels (Planosols (Aric)) under different types of long-term agrotechnical impact has been studied in the south of Primorskii region. The profile patterns of the level of SOC content in soils and in nodules indicate the active deposition of organic compounds in nodules in the lower parts of soil profiles in the of fallow and phytomeliorative variants of the experiment. Fulvic acids were noted to predominate in the composition of humus in the nodules in these variants. The long-term application of organic fertilizers contributed to the decrease of SOC incorporation into nodules and to the increase of the part of humic acids in nodules. Nodules were characterized by a high accumulation levels of Co and Pb in all variants of the experiment. Accumulation of Ni, Cr, and Cu was recorded in nodules from particular horizons of studied soils. The intensity of elements accumulation in nodules of different variants of the experiment varied. Accumulation of Ni was controlled by the content of Mn-containing compounds. Based on the analysis of relationships between the contents of SOC, compounds of Fe and Mn, and trace elements, the relative influence of Fe–containing and organic compounds in accumulation of all studied elements by nodules has been identified.</p>","PeriodicalId":11892,"journal":{"name":"Eurasian Soil Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140610241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-16DOI: 10.1134/s1064229323603165
E. V. Fedoseeva, V. A. Terekhova
Abstract
The specific features of halotolerant fungi are analyzed to assess their potential for indicating chemical contamination of saline soils and to search for the promising test species for laboratory mycotesting. The listed halophile and halotolerant micromycete genera comprise the representatives suitable as indicators of pollution by heavy metals, oil products, and other toxicants on the background of increased salinity of soil substrates. The moderately halotolerant species of micromycetes are proposed as promising for biotesting of the soils with moderate salinity. Morphological, physiological, and molecular mechanisms underlying the adaptation of halophilic and halotolerant fungi to an increased salinity of habitats are analyzed. The responses of fungal communities to the combined impact of salinization and toxic substances of different natures are discussed. The methodological aspects of the application of halotolerant fungi for biotesting the degree of disturbance of saline soils are considered, including the composition of media, cultivation conditions, and test responses of fungal cultures optimal for an adequate assessment of the degree of fungal halotolerance and the ecotoxicity of soil samples.
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