Статті в журналах: "Technosols fertility"

1

Gonçalves, Janaína Oliveira, Carolina Moreno Fruto, Mauricio Jaraba Barranco, Marcos Leandro Silva Oliveira, and Claudete Gindri Ramos. "Recovery of Degraded Areas through Technosols and Mineral Nanoparticles: A Review." Sustainability 14, no. 2 (January 17, 2022): 993. http://dx.doi.org/10.3390/su14020993.

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Anthropogenic sources such as urban and agricultural runoff, fossil fuel combustion, domestic and industrial wastewater effluents, and atmospheric deposition generate large volumes of nutrient-rich organic and inorganic waste. In their original state under subsurface conditions, they can be inert and thermodynamically stable, although when some of their components are exposed to surface conditions, they undergo great physicochemical and mineralogical transformations, thereby mobilizing their constituents, which often end up contaminating the environment. These residues can be used in the production of technosols as agricultural inputs and the recovery of degraded areas. Technosol is defined as artificial soil made from organic and inorganic waste, capable of performing environmental and productive functions in a similar way to natural ones. This study presents results of international research on the use of technosol to increase soil fertility levels and recover degraded areas in some countries. The conclusions of the various studies served to expand the field of applicability of this line of research on technosols in contaminated spaces. The review indicated very promising results that support the sustainability of our ecosystem, and the improvement achieved with this procedure in soils is comparable to the hybridization and selection of plants that agriculture has performed for centuries to obtain better harvests. Thus, the use of a technosol presupposes a much faster recovery without the need for any other type of intervention.

2

Grard, Baptiste J.-P., Nastaran Manouchehri, Christine Aubry, Nathalie Frascaria-Lacoste, and Claire Chenu. "Potential of Technosols Created with Urban By-Products for Rooftop Edible Production." International Journal of Environmental Research and Public Health 17, no. 9 (May 5, 2020): 3210. http://dx.doi.org/10.3390/ijerph17093210.

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Urban agriculture is sprouting throughout the world nowadays. New forms of urban agriculture are observed such as rooftop farming. In the case of low-tech rooftop farming projects, based on recycled urban waste, one of the key issues is the type of substrate used, as it determines the functions and ecosystem services delivered by the green roof. Using a five year experimental trial, we quantified the food production potential of Technosols created only with urban wastes (green waste compost, crushed wood, spent mushroom), as well as the soil fertility and the potential contamination of food products. Regarding food production, our cropping system showed promising results across the five years, in relation with the high fertility of the Technosols. This fertility was maintained, as well as the nutrients stocks after five cropping years. Most of the edible crops had trace metals contents below existing norms for toxic trace metals with nevertheless a concern regarding certain some trace metals such as Zn and Cu. There was no trace metal accumulation in the Technosols over time except for Zn. This study confirmed that constructing Technosols only from urban wastes is a suitable and efficient solution to design rooftops for edible production.

3

Napoletano, Pasquale, Claudio Colombo, Erika Di Iorio, Valeria Memoli, Speranza Claudia Panico, Anna Gabriella Ruggiero, Lucia Santorufo, Giulia Maisto, and Anna De Marco. "Integrated Approach for Quality Assessment of Technosols in Experimental Mesocosms." Sustainability 13, no. 16 (August 13, 2021): 9101. http://dx.doi.org/10.3390/su13169101.

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The assessment of Technosols quality in urban environments is pivotal for the maintenance of ecosystems impacted by human activities. The study was performed on Technosols constructed in experimental mesocosms in the suburban area of Naples (Southern Italy) to highlight changes in the main soil properties over eight years and to identify the most suitable indices at quality monitoring. In this study, several chemical, biological, and integrated indices were analysed to evaluate the mineral accumulation, potential ecological risk, edaphon activity, fertility, and the overall soil quality. The Technosols showed alkaline pH, nitrogen ranged from 24.5 to 39.5 g kg−1, high organic matter contents above 40 g kg−1, and there were no evident processes of soil compaction. Heavy metals (Cr, Cu, Fe, Mg, Mn, Ni, Pb, and Zn) did not exceed the thresholds defined by the Italian law for urban soils, despite their volcanic components. During eight years, the chemical indices depicted changes in the elements balance and increase in ecological risk; the biological indices indicated a reduction in the fungal fraction (fivefold) and in the resources utilisation and carbon storage. The soil quality index with all parameters highlighted the reduction in the soil quality (from 0.78 to 0.65) due to the decrease of the chemical quality, the increase of microbial stress conditions, and changes of the microbial composition, underlining the importance of integrating chemical and biological information for monitoring Technosols.

4

Deeb, Maha, Michel Grimaldi, Thomas Z. Lerch, Anne Pando, Agnès Gigon, and Manuel Blouin. "Interactions between organisms and parent materials of a constructed Technosol shape its hydrostructural properties." SOIL 2, no. 2 (April 22, 2016): 163–74. http://dx.doi.org/10.5194/soil-2-163-2016.

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Abstract. There is no information on how organisms influence hydrostructural properties of constructed Technosols and how such influence will be affected by the parent-material composition factor. In a laboratory experiment, parent materials, which were excavated deep horizons of soils and green waste compost (GWC), were mixed at six levels of GWC (from 0 to 50 %). Each mixture was set up in the presence/absence of plants and/or earthworms, in a full factorial design (n = 96). After 21 weeks, hydrostructural properties of constructed Technosols were characterized by soil shrinkage curves. Organisms explained the variance of hydrostructural characteristics (19 %) a little better than parent-material composition (14 %). The interaction between the effects of organisms and parent-material composition explained the variance far better (39 %) than each single factor. To summarize, compost and plants played a positive role in increasing available water in macropores and micropores; plants were extending the positive effect of compost up to 40 and 50 % GWC. Earthworms affected the void ratio for mixtures from 0 to 30 % GWC and available water in micropores, but not in macropores. Earthworms also acted synergistically with plants by increasing their root biomass, resulting in positive effects on available water in macropores. Organisms and their interaction with parent materials positively affected the hydrostructural properties of constructed Technosols, with potential positive consequences on resistance to drought or compaction. Considering organisms when creating Technosols could be a promising approach to improve their fertility.

5

Maslikova, K. P. "Eсomorphic structure of the soil macrofauna communities of technosols of the Nikopol Manganese Ore Basin". Biosystems Diversity 26, № 2 (11 квітня 2018): 85–91. http://dx.doi.org/10.15421/011813.

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This study established features of the animal population of artificial soil-like bodies – technosols in terms of ecomorphic analysis. The survey was conducted at the research station of the Dnipro State Agricultural University in the city Pokrov in 2012–2014. The experimental polygons were laid within four technosol types: pedozems, sod loess-like lithogenic soils on loam, grey-green clay and red-brown clay. The polygon consisted of 15 transects and each transect was composed of seven test sites. The distance between rows in the polygon was 3 m. Each test site was a square with size 3 × 3 m. The manual sorting of the soil-zoological samples was conducted within each site for areas 0.25 × 0.25 m to the depth where animals were found. Samples were taken in late April or early May. In general, for each period of counting for each polygon 105 soil-zoological samples were taken 123 species of invertebrates were found in the soil macrofauna community of the technosols. These communities are a steppe monoceonosis with a tendency to transformations into pseudoomonoceonosis on account of increased share of pratants. The soil macrofauna of sod lithogenic soils on grey-green clay and loam on loes-like clays is most adapted to xerophilous condition. Animal communities in pedozems and sod-lithogenic soils or on red-brown clay have a more mesophilic character. The trophoceonomorphic structure of the soil macrofauna community indicates a significant potential of the fertility of artificial soil. The aeromorphs’ structure reveals a significant ability of technosols to create cracks and pores, which can lead to hyperaeration. The dominant part of the of soil macrofauna community was hypercarbonatophils. Against the background of the steppe character, the soil macrofauna community had a topomorphic structure that is unusual for natural steppe black soil biogeocenoses on loess-like loam. The trophomorph structure was greatly dominated by phytophages, which indicates the prevalence of processes of mineralization of plant residues under the humification process. The phoromorphic spectrum of soil animal communities was dominated by ecological groups which move without the active construction of tunnels.

6

Deeb, M., M. Grimaldi, T. Z. Lerch, A. Pando, A. Gigon, and M. Blouin. "Interactions between organisms and parent materials of a constructed Technosol shape its hydrostructural properties." SOIL Discussions 2, no. 2 (December 17, 2015): 1309–44. http://dx.doi.org/10.5194/soild-2-1309-2015.

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Abstract. Constructed Technosols provide an opportunity to recycle urban waste, and are an alternative to the uptake of topsoil from the countryside. Despite potential problems of erosion, compaction or water holding capacity, their physical properties and the resulting water regulation services are poorly documented. In a laboratory experiment, excavated deep horizons of soils and green waste compost (GWC) were mixed at six levels of GWC (from 0 to 50 %). Each mixture was set up in the presence/absence of plants and/or earthworms, in a full factorial design (n = 96). After 21 weeks, hydrostructural properties of constructed Technosols were characterized by soil shrinkage curves. Organisms explained the variance of hydrostructural characteristics (19 %) a little better than parent-material composition (14 %). The interaction between the effects of organisms and parent-material composition explained the variance far better (39 %) than each single factor. To summarize, compost and plants played a positive role in increasing available water in macropores and micropores; plants were extending the positive effect of compost up to 40 and 50 % GWC. Earthworms affected the void ratio for mixtures from 0 to 30 % GWC and available water in micropores, not in macropores. Earthworms also acted synergistically with plants by increasing their root biomass and the resulting positive effects on available water in macropores. Organisms and their interaction with parent materials thus positively affected the hydro-structural properties of constructed Technosols, with potential positive consequences on resistance to drought or compaction. Considering organisms when creating Technosols could be a promising approach to improve their fertility.

7

Carvalho, A., C. Nabais, S. R. Roiloa, and S. Rodríguez-Echeverría. "Revegetation of abandoned copper mines: the role of seed banks and soil amendments." Web Ecology 13, no. 1 (September 16, 2013): 69–77. http://dx.doi.org/10.5194/we-13-69-2013.

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Abstract. Mining is one of the main causes of environmental pollution by heavy metals and (re)vegetation of mine spoils is the most effective method of preventing wind and water erosion and the consequent spread of contaminants to surrounding areas. However, plant establishment and growth are conditioned by some limiting factors of mine soils, such as low pH, low fertility, high heavy metal concentration, and a small seed bank to initiate plant establishment. Improving soil physical and chemical properties is required in many cases for successful (re)vegetation programs. In the copper mine of Touro, Galicia, Spain there is a large-scale project of soil amendment underway using technosols, a mixture of several organic residuals, to improve the conditions of mine soils. We evaluated the seed bank of several types of technosols, mine soil and soil from a control area outside the mine by studying seedling emergence in these soils. In a second experiment we evaluated the impact of increasing pH with liming and the admixing of nutrient-rich soil on the growth of two grasses (Lolium perenne and Dactylis glomerata) and two legumes (Medicago sativa and Trifolium subterrraneum) both sown individually and in mixtures. Seedling emergence and species richness were highest in the technosols. Soil amendments promoted plant growth, with the addition of high-nutrient soil being the best amendment for the four plant species tested. Plant growth was impaired in the mine soil. Lolium perenne was the only plant species that germinated and grew in this soil. We found that soil amendments, either through the addition of technosols, pH buffering or nutrient enrichment, are essential for promoting the revegetation of mine areas.

8

Fourvel, Gaëtan Jules, Laure Vidal-Beaudet, Agathe Le Bocq, François Thery, Violaine Brochier, and Patrice Cannavo. "Fertility of Technosols constructed with dam sediments for urban greening and land reclamation." Journal of Soils and Sediments 19, no. 8 (July 9, 2018): 3178–92. http://dx.doi.org/10.1007/s11368-018-2077-1.

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9

Malić, Nenad, Zorica Golić, and Mihajlo Marković. "CHANGES IN THE ADSORPTION COMPLEX OF REKULTISOL UNDERNEATH THE SEEDED GRASSLANDS." Radovi Šumarskog fakulteta Univerziteta u Sarajevu 21, no. 1 (October 1, 2016): 131–37. http://dx.doi.org/10.54652/rsf.2016.v1.i1.289.

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UDK 631.41(497.6) The research was conducted on deposol and rekultisol (technosols) in lignite mine Stanari. The main task of the formed grasslands is to improve the mechanical, chemical and biological properties of the rekultisol and deposol in the reclamation process. The fertility of Stanari deposol is extremely low in comparison to the natural soil. Grassland seeding through direct type of reclamation was conducted in 2008, 2011 and 2012 year. The conducted researches include the changes in the adsorption complex in the surface layer of the treated deposol in the reclamation process. Laboratory analysis of this technogenic soil were carried out before the reclamation and sowing started, and then in the process of reclamation at the end of 2012. On the experimental plots where reclamation measures were implemented, there is a slight improvement in most of the chemical characteristics of the rekultisol. Adsorption capacity and saturation degree of base cations in rekultisol were increased. Proper selection of the agromeliorative and other measures is required in the reclamation process. Well based seeding grasslands contribute to the creation of quality rekultisol.

10

Paramonova, T. A., G. M. Chernogaeva, N. N. Lukyanova, and M. S. Paramonov. "Heavy Metals in Urban Soils of the Volga Federal District: a Conjugate Analysis of Official Data." Почвоведение, no. 11 (November 1, 2023): 1472–88. http://dx.doi.org/10.31857/s0032180x23600300.

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Based on a conjugated analysis of the official data of Roshydromet on the content of priority heavy metals (Cd, Pb, Zn, Cu, Ni) in the soils of 23 cities of the Volga Federal District, as well as Rosstat data on the socio-economic indicators of these settlements, the ecological and geochemical characteristics of urbanozems (Urbic Technosols) and with the help of multivariate statistical analyzes (cluster and factorial), possible relationships between soil pollution parameters and urban features of cities were revealed. For the soils of most cities in the region with average socioeconomic indicators, admissible levels of accumulation of Cd, Pb, Zn, and Cu have been established, which, in terms of concentrations, are close to the average abundance of urban soils in Russia. In small and medium-sized cities of the Republic of Bashkortostan, exceedances of APC Ni in soils are recorded, which reflects the presence of a regional geochemical anomaly of natural and anthropogenic nature in the eastern part of the Volga Federal District, but no correlations between nickel pollution and socio-economic indicators of settlements are revealed. The moderately hazardous level of complex pollution in urbanozems with dominant accumulation of Cd and significantly lower concentration ratios of other heavy metals (Belebey, Davlekanovo, Dzerzhinsk) shows no correlation with the demographic indicators of settlements. The more complex profile of soil pollution (Cd–Zn in Penza or Cu–Cd–Zn in Mednogorsk) shows lower values of the total fertility rate and higher values of the mortality rate (compared with the average regional indicators). In general, using the example of the cities of the Volga Federal District, it is shown that the gradients of increasing concentrations in soils of Cd, Pb, Zn, Cu and the total pollution index Zc are codirectional with an increase in the general mortality rate of the population.

11

Havryushenko, Oleksandr O., Oleksandr O. Mytsyk, Mykola M. Kharytonov, Natalia V. Honchar, Mykhailo G. Babenko, Valentyna T. Pashova, and Yuriy I. Tkalich. "The suitability of physical and chemical properties of rocks for land reclamation in different subzones of the Ukrainian Steppe." Journal of Geology, Geography and Geoecology 31, no. 2 (August 3, 2022): 251–59. http://dx.doi.org/10.15421/112223.

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The study of the properties of disturbed soils and rocks makes it possible to establish the parameters of the natural fertility of the studied substrates, to detect limiting factors, and to determine a set of restoration measures. The tested overburden rocks with the largest stratigraphic share of the open-pit quarries of the Nikopol manganese and Kerch iron ore deposits were loamy-like loess (Quaternary) and grey-green clay (Neogene). There is a certain parametric relationship between texture, density, porosity, the structural and physical state of different models of artificial reclaimed profiles. The composition and properties of rocks of edaphic structures of technosoils differ according to zonal natural and climatic conditions of the subzones of the Ukrainian Steppe. Loess-like loam and grey-green clay of the Kerch iron ore deposit are distinguished by a higher bulk density, lower porosity, and wilting moisture compared to samples from the Nikopol manganese ore basin. The use of the rotor complex leads to mechanical destruction and an increase in the content of small particles of rocks. Self-compacting processes occur to a large extent in multilayer structures. This pattern is observed at the boundary of the backfill differentiated in texture layers of technosoils. This indicates the existence of a barrier that prevents the relationship of edaphic properties between substrata stratums. Optimal ratio of clay minerals provides a rather high capacity of grey-green clay for water absorption. The model of technosoil composed of grey-green clay differs in a larger number of water-resistant micro-aggregates. The best conditions for land reclamation are connected with including grey-green clay in two- and three-layer constructions of technosoils, providing a waterproofing effect.

12

Manfredi, Paolo, Chiara Cassinari, Roberta Salvi, Raffaella Battaglia, Adriano Marocco, and Marco Trevisan. "Test on The Effects of Reconstituted Soil on Emergency Speed and Root Growth in Maize." Contemporary Agriculture 67, no. 3-4 (December 1, 2018): 242–48. http://dx.doi.org/10.1515/contagri-2018-0035.

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Summary Reconstitution is a pedotechnique to counter land degradation and desertification. The reconstitution, patented by the research laboratory m.c.m. Ecosistemi, applies chemical-mechanical actions to a mixture of degraded soil and matrices (such as waste sludge) in order to produce reconstituted soil, a very high fertility soil. This paper is about a pot study in a greenhouse to investigate how reconstituted soil affects emergence speed and seminal roots development of Zea mays L. seedlings, in comparison with a Technosol. 200 seedlings are monitored up to the 16th day after the seeding. The emergence percentage is 98% on reconstituted soil and 91% on Technosol. Average length and weight of fresh seminal roots are higher on reconstituted soil.

13

Nogales, Amaia, Salvadora Navarro-Torre, Maria Manuela Abreu, Erika S. Santos, Ana Cortinhas, Rosalba Fors, Marion Bailly, Ana Sofia Róis, and Ana Delaunay Caperta. "Unravelling the Combined Use of Soil and Microbial Technologies to Optimize Cultivation of Halophyte Limonium algarvense (Plumbaginaceae) Using Saline Soils and Water." Soil Systems 7, no. 3 (August 17, 2023): 74. http://dx.doi.org/10.3390/soilsystems7030074.

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Salt-affected soils have detrimental effects on agriculture and ecosystems. However, these soils can still be used for halophyte (salt-tolerant plants) cultivation using brackish and/or saline water. In this study, we employed soil technologies and mutualistic microorganisms as a sustainable strategy to improve the growth and reproduction of the halophyte Limonium algarvense Erben’s growth and reproduction under saline conditions. A microcosm assay was conducted under controlled greenhouse conditions to cultivate L. algarvense using a saline Fluvisol (FLU) amended—or not—with a Technosol (TEC). Plants were inoculated with the arbuscular mycorrhizal fungus (AMF) Rhizoglomus irregulare and/or a consortium of plant growth-promoting bacteria (PGPB), and they were irrigated with estuarine water. Soil enzyme analysis and physicochemical characterisation of the soils, collected at the beginning and at the end of the assay, were carried out. The physiological status of non-inoculated and inoculated plants was monitored during the assay for 4 months, and AMF root colonisation was evaluated. In FLU, only plants inoculated with the AMF survived. These plants had lower number of leaves, and shoot and root dry biomass than the ones grown in the TEC by the end of the assay. In the TEC, PGPB inoculation led to higher NDVI and PRI values, and AMF inoculation promoted higher reproductive development but not pollen fertility. The findings show that the combined use of soil and microbial technologies can be successfully applied to cultivate L. algarvense, suggesting their generalized use for other Limonium species with economic interest, while contributing to the sustainable use of marginal lands.

14

Chorna, V. I., and I. V. Wagner. "Ecological features of urease activity distribution in technogenically altered soils of the Nikopol manganese ore basin." Ecology and Noospherology 30, no. 1 (April 5, 2019): 14–18. http://dx.doi.org/10.15421/031902.

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The challenge of degradation of natural ecosystems because of human activity is considered by the world community to the most serious problems facing mankind. As a result of mineral extraction, man-made landscapes and environmentally ruined areas replace natural habitats and agroecosystems; a whole spectrum of man-made processes are typical for such landscapes, which leads to a decrease in species richness and biological diversity within such areas. Degraded territories formed in the process of coal mining are often partially restored through remediation measures. During the implementation of the technical stage of remediation, substrates with different potential fertility having different environmental properties and quality are used. Specific features of distribution total, available nitrogen concentrations and levels of urease enzymatic activity at the layers of artificial soil, sod-lithogenic soils onto gray-green and red-brown clays and on loess-like loams in the Nikopol manganese ore basin are established. It is presented general assessment of technosol status by concentration of general easily hydrolysed nitrogen enzyme activity of urease and this enzyme enriches the soil with mineral nitrogen in the process of mineralization of organic substances. The level of activity of urease, investigated soils, determines the intensity of the direction of biochemical processes that affect soil fertility.High correlation between concentrations of soluble nitrogen and urease activity values by layers of artificial soil (r = 0.81), sod-lithogenic soils onto gray-green (r = 0.98), red-brown clays (r = 0.72) and onto loess-like loam (r = 0.85) were found. Tendency of decreasing hydrolytic enzyme activity, urease, with depth in all types of artificial soil studied was established. It has been established that biochemical diagnostics of technozem processes beyond the level of activity of the hydrolytic enzyme urease makes it possible to estimate the direction of changes at the layers of artificial soil, sod-lithogenic soils onto gray-green and red-brown clays and on loess-like loams. The recultivated soil has some what lower fertility and greater salimity at the lower horizons, but is capable of performing ecological functions and can not only be used for economic purposes, but also perform ecological functions.

15

Díaz-Ortega, J., Y. Rivera-Uria, E. López-Mendoza, S. Sedov, F. Romero, E. Solleiro-Rebolledo, and L. G. Martínez-Jardines. "Development of sustainable hydromorphic Technosols within artificial wetlands in mining landscapes: the effects of wastewater and hydrothermal geological materials." Journal of Soils and Sediments, March 23, 2024. http://dx.doi.org/10.1007/s11368-024-03763-4.

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Abstract Purpose The Buenavista del Cobre mine is in a semiarid environment in NW Mexico. A part of the mine tailings dam has been flooded with wastewater from Cananea, generating an artificial wetland. The main objectives of this work were to evaluate the effect of wastewater on the pedogenesis of wetland Technosols developed on mine tailings and to compare them with the soil of non-irrigated tailings and with a natural soil profile. Materials and methods Three profiles were studied inside the dam as follows: a profile under waterlogging conditions, a profile under conditions of periodic sewage saturation, and a profile with no waterlogging conditions. Laboratory methods included the micromorphological analysis of the soil structure and pedo-features, fertility properties, identification of clay minerals, and analysis of bulk chemical composition. Results and discussion It was found that the biogenic structure and voids associated with organic materials were the main micromorphological features of the studied wetland Technosols. Primary sulfides remained unaltered in the Technosols irrigated with wastewater, whereas incipient sulfide oxidation was observed in the non-irrigated tailings. Chlorite and smectite were detected in the Technosols. Such mineral assemblage was found to be mostly generated by hydrothermal processes. Conclusion Irrigation of tailings with wastewater supported the biological aggregation and porosity formation within the soil matrix, supplied plant nutrients, and enhanced the ecological soil quality of the studied hydromorphic Technosols. Saturation with wastewater hampered the oxidation of primary sulfides in the hydromorphic Technosols, preventing soil acidification and the mobilization of heavy metal contaminants.

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Forján, Rubén, Alfonso Rodríguez-Vila, Beatriz Cerqueira, Emma F. Covelo, Purificación Marcet, and Verónica Asensio. "Comparative effect of compost and technosol enhanced with biochar on the fertility of a degraded soil." Environmental Monitoring and Assessment 190, no. 10 (September 27, 2018). http://dx.doi.org/10.1007/s10661-018-6997-4.

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Lebrun, Manhattan, Florie Miard, Romain Nandillon, Domenico Morabito, and Sylvain Bourgerie. "Biochar Application Rate: Improving Soil Fertility and Linum usitatissimum Growth on an Arsenic and Lead Contaminated Technosol." International Journal of Environmental Research, January 3, 2021. http://dx.doi.org/10.1007/s41742-020-00302-0.

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18

Villa, Pedro Manuel, Sebastião Venâncio Martins, Aline Pilocelli, Gabriel Correa Kruschewsky, Andreia Aparecida Dias, and Fabio Haruki Nabeta. "Attributes of stand-age-dependent forest determine technosol fertility of Atlantic forest re-growing on mining tailings in Mariana, Brazil." Journal of Forestry Research, June 9, 2021. http://dx.doi.org/10.1007/s11676-021-01359-z.

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19

Chorna, V. I., I. V. Wagner, and V. V. Katsevych. "Ecological features of enzyme activity distribution in edaphotops of technogenic landscapes." Ecology and Noospherology 29, no. 2 (October 27, 2018). http://dx.doi.org/10.15421/031812.

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Specific features of distribution total, available phosphorus concentrations and levels of phosphatase enzymatic activity at the layers of artificial soil, sod-lithogenic soils onto gray-green and red-brown clays and on loess-like loams in the Nikopol manganese ore basin are established. It is presented general assessment of technosoil status by evaluation of phosphatase enzyme activity; this enzyme enriches the soil with mineral phosphorus and thereby improves its availability for living organisms. Among current bioindication methodology, soil enzymatic method is the most reliable and promising because enzymatic activity serves a stable indicator of soil biogenicity in comparison with other indicators. Soil enzymatic activity determines both intensity and targeting of biogeochemical processes. High correlation between concentrations of soluble phosphorus and phosphatase activity values by layers of artificial soil (r = 0.87), sod-lithogenic soils onto gray-green (r = 0.77), red-brown clays (r = 0.62) and onto loess-like loam (r = 0.95) was determined. Tendency of decreasing hydrolytic enzyme activity, phosphatase, with depth in all types of artificial soil studied was established. High efficiency of the enzymatic activity study in diagnostics of soil fertility dynamics under impact of various anthropogenic and natural ecosystems was determined. Advantages of using this method are capability to determine rapidly the changes occurring in ecosystems in the early stages of degradation processes and prediction of their targeting and, accordingly, their intensity. It has been found that levels of phosphatase activity and values of mobile phosphorus compounds in complex biogeocoenotic systems are sensitive quantitative indicators of changes in environmental conditions in man-made environment, and they generate good data about processes occurred within the soil column. The use of phosphatase activity level can be a reliable and promising method on biomonitoring of technogenic edaphotops.

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