Temporal and Spatial Features of Phosphatase Activity in Natural and Human-Transformed Soils

Kashirskaya, N. N.; Плеханова, Л. Н.; Chernisheva, E. V.; El’tsov, M. V.; Udaltsov, S. N.; Борисов, А. В.

doi:10.1134/s1064229320010093

Cited by 19 publications

(7 citation statements)

References 18 publications

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“…The activity of oxidoreductases characterizes the redox reactions of the transformation of organic substances, the activity of hydrolases characterises the intensity of the processes of organic substances mineralization, which include the most important nutrients -nitrogen, phosphorus, etc. (Utobo and Tewari, 2015;Kazeev et al, 2016;Kashirskaya et al, 2020). In accordance with the data of the rating scale (Gaponyuk and Malakhov, 1985), in all studied subtypes of mountain soils the activity of catalase is average, dehydrogenase activity is medium in mountain chernozems and weak in mountain meadow chernozemic soils (Table 4).…”

Section: Biochemical Soil Propertiessupporting

confidence: 68%

Assessment of biological activity in mountain chernozems and mountain-meadow chernozemic soils of natural biogeocenoses in the Central Caucasus, Russia

Гедгафова¹,

Gorobtsova²,

Uligova³

et al. 2022

Eurasian Journal of Soil Science (Ejss)

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Article InfoIndicators reflecting various aspects of biological properties (genetic, microbiological, biochemical) were estimated for the upper horizons (0-20 cm) of mountain chernozems (Mollic Chernozems, WRB, 2015) and mountain meadow chernozemic soils (Mollic Leptosols Eutric, WRB, 2015), that were formed in the conditions of natural biogeocenoses of the Central Caucasus (Elbrus variant of zonality within Kabardino-Balkaria). A comparative assessment was performed for the biological activity parameters (humic content and stock, microbial biomass carbon (Cmic) content and stock, the enzyme activity of hydrolases (invertase, phosphatase, urease) and oxidoreductases (catalase, dehydrogenase)) in combination with indicators of the soil density and acid-base properties of various subtypes of the studied soils (typical and leached). The obtained results showed that the studied types of mountain soils in the upper horizons are characterized by a porous loose composition (0.75-1.07 g/cm 3 ), neutral (pHH2O = 7.0-7.4) and slightly alkaline (pHH2O = 7.9-8.0) by the reaction of the soil solution, high and very high content (9.5-19.1%) and stock of organic matter (173-276 t/ha). The maximal biological activity was noted in mountain-meadow chernozemic soils, which surpass mountain chernozems in humic content (by 42%) and stock (24%), Cmic content (38%) and stock (17%), relative total activity of hydrolases (36%), but inferior in activity of oxidoreductases (32%). Based on the data obtained, the integrative index of ecological and biological condition (IIEBC) was calculated, which reflects the general level of biological activity of the studied soils. Higher IIEBC values of mountain meadow chernozemic soils (80-100%) in comparison with mountain chernozems (70-74%) are due to the unique complex of soil-forming conditions in which these soils function. The established biological parameters of mountain soils of natural landscapes are necessary for use as reference in environmental studies of anthropogenically disturbed biogeocenoses.

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Section: Biochemical Soil Propertiessupporting

confidence: 68%

Assessment of biological activity in mountain chernozems and mountain-meadow chernozemic soils of natural biogeocenoses in the Central Caucasus, Russia

Гедгафова¹,

Gorobtsova²,

Uligova³

et al. 2022

Eurasian Journal of Soil Science (Ejss)

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“…In Haplic Arenosols and Haplic Cambisols, the most sensitive indicator is the length of the radish roots. Therefore, the recovery period after oil pollution in Haplic Arenosols occurs faster than in Haplic Chernozem [36,37]. In Haplic Chernozem, the phosphorus content depends on the cultivation technology and the fertilizers used [38][39][40].…”

Section: Discussionmentioning

confidence: 99%

Enzymatic Assessment of the State of Oil-Contaminated Soils in the South of Russia after Bioremediation

Minnikova

Колесников

Revina

et al. 2023

Toxics

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Soil pollution with oil as a result of accidents at oil pipelines and oil refineries is a frequent occurrence in the south of Russia. To restore such polluted lands, it is necessary to carry out soil remediation measures. This work aimed to evaluate the use of ameliorants of various natures (biochar, sodium humate, and microbial preparation Baikal EM-1) to restore the ecological state of oil-contaminated soils with different properties (Haplic Chernozem, Haplic Arenosols, Haplic Cambisols). To assess the ecological state of soils, the following physicochemical and biological indicators were studied: residual oil content, redox potential, and medium reaction (pH). Changes in enzymatic activity were also studied, including catalase, dehydrogenases, invertase, urease, and phosphatase. The greatest decomposition of oil in Haplic Chernozem and Haplic Cambisols was provided by Baikal EM-1 (56 and 26%), and in Haplic Arenosols, this was provided by biochar (94%) and sodium humate (93%). In oil-contaminated Haplic Cambisols, the content of easily soluble salts with the addition of biochar and Baikal EM-1 increased by 83 and 58%, respectively. The introduction of biochar caused an increase in pH from 5.3 (Haplic Cambisols) to 8.2 (Haplic Arenosols). The introduction of oil-contaminated Haplic Arenosols of biochar, humate, and Baikal stimulated the activity of catalase and dehydrogenases by 52–245%. The activity of invertase was stimulated in the Haplic Chernozem after the introduction of ameliorants by 15–50%. The activity of urease was stimulated after the introduction of ameliorants into borax and Arenosol by 15–250%. The most effective ameliorant for restoring the ecological state of Haplic Cambisols after oil pollution was biochar. For Haplic Arenosols, this was sodium humate, and for Haplic Chernozem, the effectiveness of biochar and sodium humate did not differ. The most informative indicator for the remediation of Haplic Chernozem and Haplic Cambisols was the activity of dehydrogenases, and for Haplic Arenosols, this was the activity of phosphatase. The results of the study should be used to biomonitor the ecological state of oil-contaminated soils after bioremediation.

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“…Phosphatases are direct participants of the phosphorus cycle in the soil, responsible for the contribution of organic phosphorus to the phosphate pool of the culture layer. The degree of phosphatase activity reflects the intensity of phosphorus-containing organic compounds entering the soil [35]. Correlation analysis has shown that Soil Pits 1 and 2 are characterized by an inverse relationship between the content of mineral phosphorus and phosphatase activity (correlation coefficient of -0.71 and -0.79, respectively), whereas Soil Pit 3, on the contrary, has revealed a positive correlation with both mineral and organic phosphorus (correlation coefficient of 0.83).…”

Section: Biological Properties Of the Cultural Layermentioning

confidence: 99%

Reconstruction of Particularities of Ancient Human Activity Based on Geochemical and Soil Microbiological Investigation of Sotk-2 Site (Republic of Armenia)

Чернышева

Amiryan

El’tsov

et al. 2022

History, Archeology and Ethnography of the Caucasus

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The article presents the results of the first joint soil-archaeological investigations on the territory of the Republic of Armenia. The cultural layers of the Sotk-2 site, located on the southeastern coast of Lake Sevan, were chosen as the object of study. The Sotk-2 played a special role in the settlement system in the region, as it is located on the way to the Bronze Age gold mine. A multi-layered settlement has been recorded here, which settled from the early Bronze Age until the early Iron Age (with certain interruptions). However, only the Bronze Age layer was characterized by the presence of anthropogenic deposits, while only scattered artifacts identified other periods of occupation. As part of joint research, samples were taken from the previous excavated trenches at the archaeological site in August 2021 for laboratory analysis. Analysis of the chemical and microbiological properties of cultural layers made it possible, for the first time on the archaeological monuments of this type, to identify periods with the lowest and highest intensity of human activity, as well as to establish the infrastructural features of the settlement. The strongest anthropogenic impact took place during the formation of the Middle – Late Bronze Age layer. Places for cooking and household pits were localized, where an increased concentration of organic phosphorus, copper, manganese, lanthanum was observed, as well as high microbial biomass and lipase activity. In another site of the settlement in the layer of the Middle – Late Bronze Age, an increased concentration of calcium, strontium and magnesium was revealed, which indicates the possibility of butchering fish in this place. The lowest residential load on the Sotk-2 site, according to soil analysis, took place in the early Bronze Age.

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Temporal and Spatial Features of Phosphatase Activity in Natural and Human-Transformed Soils

Cited by 19 publications

References 18 publications

Assessment of biological activity in mountain chernozems and mountain-meadow chernozemic soils of natural biogeocenoses in the Central Caucasus, Russia

Assessment of biological activity in mountain chernozems and mountain-meadow chernozemic soils of natural biogeocenoses in the Central Caucasus, Russia

Enzymatic Assessment of the State of Oil-Contaminated Soils in the South of Russia after Bioremediation

Reconstruction of Particularities of Ancient Human Activity Based on Geochemical and Soil Microbiological Investigation of Sotk-2 Site (Republic of Armenia)

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