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Pozycja Open Access Anthropogenic Industrisols within Ewa Peninsula in Szczecin Port Part I. Stratygraphy and Chemical Properties(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2015) Malinowski, Ryszard; Protasowicki, Mikołaj; Niedźwiecki, Edward; Meller, Edward; Sammel, Adam; Szkudlarek, Piotr; Treńczak, Karolina; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin, Poland; Department of Toxicology, West Pomeranian University of Technology, Szczecin, Poland; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin, Poland; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin, Poland; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin, Poland; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin, Poland; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin, PolandThe studies included initial industrisols (ecranic) on the peninsula Ewa in Szczecin port. Samples of these soils were collected from deep boreholes (to 13 m below ground level), whereas those of humus soils from the topsoil 0–25(30 cm) of sporadically occurring lawns. Port infrastructure did not allow sampling deeper strata. In stratigraphic structure of initial ekranosols, the surface layer, 2.7–4.4 m thick (mean 3.20 m) of sand, transported to improve the swampy terrain under construction, was distinguished. Transported material, obtained from dredging the nearby water bodies contributed to the compaction of Holocene formations (organic deposits and fen peat), visible at the depth 3.20–9.00 m. This sandy cover layer, under reinforced concrete slabs, contained 2–5% fraction <0.002 mm and only in its upper part, skeleton fractions of anthropogenic origin. It was characterised by pHKCl 5.7–8.0), a slight to 1% CaCO3 content, mean 7.0 g · kg–1 content of organic carbon and wide C : N 17.5 : 1 ratio, whereas the predominant organic layer of examined boreholes had pHKCl 4.9–6.7, organic carbon in the range 174.1–183.7 g · kg–1 and the ratio of C : N from 13.5 : 1 to 16.7 : 1. Comparison of topsoil properties of initial industrisols (ekranic) of thickness 0.25–1.50 m, with humus soils under squares, confirms the common origin of these sandy soil materials. Humus soils also contained 3–6% fraction <0.002 mm, similar reaction and CaCO3 content. Increased, in these soils, content of organic carbon to 28.6 g · kg–1 and in some cases even to 86.6 g · kg–1, and total nitrogen from 2.2 to 8.9 g · kg–1 resulted in a more beneficial ratio of C : N from 9.7 : 1 to 13.0 : 1. High accumulation of organic carbon and available phosphorus, potassium, and magnesium is, first of all, the effect of fertilisation and cultivation practices. The analysis of these properties shows how important role, in the ecosystem of urban and industrial-urban soils, is played by land utilisation, which is becoming a vital soil-forming factor.Pozycja Open Access Anthropogenic Industrisols within Ewa Peninsula in Szczecin Port Part II. Content of Heavy Metals(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2015) Protasowicki, Mikołaj; Niedźwiecki, Edward; Meller, Edward; Malinowski, Ryszard; Rajkowska-Myśliwiec, Monika; Department of Toxicology, West Pomeranian University of Technology, Szczecin, Poland; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin, Poland; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin, Poland; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin, Poland; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin, PolandSoil material collected for Part I, Stratigraphy, chemical properties, including macroelements of industrisols (initial and humus) within Peninsula Ewa in Szczecin Port was used for determining the concentration of heavy metals: Cd, Pb, Zn, Cu, Ni, Co, Mn and Fe in these soils. The studies showed that the soils sealed with reinforced concrete slabs, in their surface layer 0.25–1.50 m, on a small area, contained an extremely high amount of lead 11 755.0 mg · kg–1 DM, accompanied by the content of copper amounting to – 135.6 mg · kg–1 DM. Such a high, point, contamination occurred only on a few to several m3 of transported sandy material. In the light of Polish legal regulations, the mentioned level of lead exceeds the permissible concentration for the land of group C (industrial, mining and traffic areas). Adjacent to the sealed soils, humus industrisols of green areas, were characterised by elevated mean content of heavy metals: Cd – 1.36; Pb – 409.4; Zn – 673.6; Cu 89.6 mg · kg–1 DM in their surface layer 0.0–0.20(0.30) m. A great role in the accumulation of the above metals might have been played by spreading dust pollution caused by other port operations such as cargo unloading and reloading.Pozycja Open Access Cechy morfologiczne i właściwości chemiczne gleb przykrytych nawierzchnią bitumiczną (ekranosoli) w obrębie ulicy Obronców Stalingradu w Szczecinie(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2013) Sammel, Adam; Chorągwicki, Łukasz; Niedźwiecki, Edward; Meller, Edward; Malinowski, Ryszard; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w SzczecinieSzczecin soils, especially in its historical, oldest parts, like the soils in other cities are either built-up or covered with various materials reducing or blocking water percolation capacity and gas exchange. According to Polish Soil Classification, such soils belong to anthropogenic, urban soils, sealed or covered; hence the term ekranic soils. The profile of soil covered with bituminous surface within the street Obrońców Stalingradu in Szczecin had the following characteristics: bituminous surface – stone pavement – Ca – 2Ca – 3C. Strongly transformed, anthropogenic soil material under the street surface contained 48.1% soil skeleton, on average, among which there were 54.8% of anthropogenic artifacts. Smaller amounts of artifacts (mean 24.0%) occurred also in deeper layers of the profile. The examined ekranosols were characterised by alkaline reaction, CaCO3 content in the range 3.8–4.8%, very low salinity, trace amounts of organic carbon, decreasing with depth, in the layer Ca wide C:N ratio (mean 21.8), low resources of available potassium and magnesium, medium to high resources of available phosphorus with its low total content. The content of Cd, Pb, Zn, Ni, Co and Mn was at a low, natural level. Only the level of Cu was elevated (I degree of contamination).Pozycja Open Access Charakterystyka wybranych elementów środowiska przyrodniczego wyspy Chełminek część I: różnicowanie się cech morfologicznych i właściwości gleb powstających z piaszczystych osadów dennych w wyniku ich zalesienia na wyspie Chełminek(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2012) Malinowski, Ryszard; Niedźwiedzki, Edward; Kowalski, Wojciech A; Protasowicki, Mikołaj; Meller, Edward; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Botaniki i Ochrony Przyrody, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Toksykologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w SzczecinieThe island Chełminek was formed artificially mostly of sand bottom sediments obtained after the construction and deepening of the fairway Świnoujście–Szczecin and was afforested about 100 years ago. In this study the properties of sand sediments under forest were compared with similar mechanical composition of “fresh” sand sediments. Forest cover brought about the development of muck soil profile with horizons Amu-AC-C-Cgg. The upper part of this profile at the depth of 3–20 cm, in comparison with “fresh” sediments, was characterised by: the accumulation of organic matter (50,4–98,0 g · kg–1), strong acidity (pHKCl 3,1–3,8), reduced bulk density (0,84–1,24 Mg · m–3), increased total porosity (45,8–53,6%), a clear increase in available potassium as well as potassium and phosphorus soluble in the mixture of concentrated HNO3 + HClO4 acids.Pozycja Open Access Charakterystyka wybranych elementów środowiska przyrodniczego wyspy Chełminek. Część 2. Aktualny stan i wartość przyrodnicza szaty roślinnej wyspy Chełminek(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2013) Kowalski, Wojciech W. A.; Banaś-Stankiewicz, Urszula; Wróbel, Mariola; Malinowski, Ryszard; Niedźwiecki, Edward; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Botaniki i Ochrony Przyrody, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Botaniki i Ochrony Przyrody, Zachodniopomorski Uniwersytet Technologiczny w SzczecinieThe paper presents the results of research on the directions of succession and the current state of vegetation of the island Chełminek, formed 100 years ago from sandy sediments deposited as a result of the deepening of the fairway Szczecin-Świnoujscie. This anthropogenic ecosystem is distinguished by well-developed forest and scrub vegetation. The most valuable natural habitats, and also the best developed are patches of riparian vegetation, especially alluvial poplar and ash forests - the priority habitats protected in the European Union. Anthropogenic origin of the island contributed to the development of synanthropic flora and few taxa under legal protection. Planned in future resumption of sandy sediment storage requires a diagnosis of the current state of vegetation of this anthropogenic island, an indication the most valuable natural habitats as well as emphasises the changes which have occurred in the last 30 years in this area, since discontinued its use.Pozycja Open Access Parametry fizyczne mieszanek kamienno-glebowych polecanych do uprawy drzew i krzewów w aglomeracjach miejskich i terenach zdegradowanych(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2012) Malinowski, Ryszard; Kubus, Marcin; Meller, Edward; Wojcieszczuk, Marta; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Dendrologii i Kształtowania Terenów Zieleni, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w SzczecinieOne method of improving the conditions for growth and development of urban trees is the use of stone and soil mixtures called structural soils. Studies provided by various authors indicate that beside the salinity the main factor of trees decaying is excessive soil compaction and lack of appropriate water-air relations.The aim of the research was to determine the basic physical parameters of two structural soils: Hydralit ZN – Baustoffe GmbH, Baumsubstrat and Hydralit ZU – Baustoffe GmbH, Baumsubstrat's Tegra. The study showed that the structural soil Hydralit ZN is classified as a very strong skeletal soil and skeletal-sandy. This structural soil is characterized by the bulk density of 1.37–1.46 g · cm–3, the total volumetric water capacity 35.4–37.7% capillary water capacity 25.49–30.16% and air porosity 5.22–10.71%. The second of the analyzed structural soil – Hydralit ZU, consists mainly of gravel, which was attributed to the very skeletal. It is characterized by high total porosity 35.39–40.61%, non-capillary porosity – 9.80–17.53% and capillary porosity – 22.53–27.58%. The physical properties of both substrates ensure correct water-air properties and mechanical ones for proper rooting and growth of trees.Pozycja Open Access Przydatność gleb porolnych przeznaczonych pod powiekszenie kolekcji Ogrodu Dendrologicznego w Przelewicach. Część I. Cechy morfologiczne i niektóre właściwosci fizyczne gleb(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2013) Malinowski, Ryszard; Niedźwiecki, Edward; Meller, Edward; Kubus, Marcin; Podlasiński, Marek; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Dendrologii i Kształtowania Terenów Zieleni, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Rekultywacji i Chemii Środowiska, Zachodniopomorski Uniwersytet Technologiczny w SzczecinieThe studies were conducted on the former arable land, intensively used, designated for extending the collection of Dendrological Garden in Przelewice. This area is characterised by a low wavy relief with gentle slopes of ca 3%, on average. Study results showed great variations, especially vertical, in granulometric composition and a considerable diversity of soil types, which had been greatly affected by water erosion. The investigated area was found to be dominated by leached black earth, grey-brown podsolic soil and deluvial soils. Considerably smaller areas were covered with rusty soils, grey-brown soils and arenosols. Irrespective of the soil type classification, these soils are characterised by a substantial humus horizon, mostly sandy clay or loamy sand containing from 4 to 6% clay fraction (<0.002 mm). Reaction is predominantly slightly acid to alkaline, humus content from 10.0 to 30.0 (mean 17.3) g · kg–1, bulk density from 1.22 to 1.59 (mean 1.47) Mg · m–3 and total porosity from 38.8 to 52.2 (mean 43.1) %. Among the determined types of soils, the most beneficial morphological characteristics and properties were detected in leached black earths.Pozycja Open Access Przydatność gleb przeznaczonych pod powiększenie kolekcji Ogrodu Dendrologicznego w Przelewicach. Część II. Właściwości sorpcyjne i zawartość składników chemicznych(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2013) Meller, Edward; Malinowski, Ryszard; Kubus, Marcin; Podlasiński, Marek; Niedźwiecki, Edward; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Dendrologii i Kształtowania Terenów Zieleni, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Dendrologii i Kształtowania Terenów Zieleni, Zachodniopomorski Uniwersytet Technologiczny w SzczecinieThis paper is the continuation of the first part of research assessing the suitability of former, intensively used, arable land for the extension of Dendrological Garden collection in Przelewice presented in “Morphological characteristics and some physical properties of soils” Despite a fairly stable loam fraction (<0.002 mm) in the humus horizon (Ap), the examined soils differed in organic carbon content, reaction and total exchangeable acidity, which differentiated their sorptivity (T) and extent of saturation with alkaline cations (V). It was found that in Ap horizon of grey-brown podsolic soil T was 6.9 cmol(+) kg–1 and V only 58.0%, in Ap of deluvial soils T ranged from 9.3–17.5 cmol(+) kg–1, and V 58.1–97.1%, whereas in leached black earths T was in the range 12.6–17.9 cmol(+) kg–1 and V 81.0–89.9%. Resources of available potassium and phosphorus varied from low to very high while the resources of available magnesium were medium. In light of legal regulations and recommendations the soils did not exhibit heavy metal contamination. Due to a high value of trophicity indicator ITGL (from 33.9 to 44.8), they were classified as eutrophic and hypertrophic.Pozycja Open Access Soil conditions and plant communities on the summit, the slope and the depression on the edge of west Oder(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2016) Kutyna, Ignacy; Malinowska, Katarzyna; Malinowski, Ryszard; Department of Ecology, Envinronmental Protection and Development, West Pomeranian University of Technology, Szczecin; Department of Plant Physiology and Biochemistry, West Pomeranian University of Technology Szczecin; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin; Kutyna I., Malinowska K., Malinowski R. (2016). Soil conditions and plant communities on the summit, the slope and the depression on the edge of west Oder. Folia Pomer. Univ. Technol. Stetin., Agric., Aliment., Pisc., Zootech., 328(39)3, 123–158. doi 10.21005/AAPZ2016.39.3.1237 relevés were made in the area of West Oder western edge located between the village of Moczyły and the hamlet of Kamionka. Geobotanical study was conducted in three elements of the terrain. 17 relevés were made on flat tops of the edge with cereal cultivation, 11 on the southern and southeastern slope within long-term fallow, and 7 in the depression (with triticale cultivation). 4 outcrops were made along the transect from which samples were taken in order to determine basic soil parameters (grain size distribution, pH and CaCO3 content). Lathyro- -Melandrietum noctiflori segetal community was distinguished on the summit and it was internally diversified into the typical variant as well as Anthemis tinctoria and Melampyrum arvense. The slopes are inhabited by floristically rich Convolvulo arvensis-Agropyretum repentis phytocoenoses. It is characterised by species diversity resulting from the process of community transformation, which occurs on the slope of the habitat during secondary succession. Poo-Tussilaginetum farfarae phytocoenoses develop at the footslope (in the depression), which is characterised by different ecological conditions compared to the slope and the summit. With the use of phytoindicational properties of plant species and Ellenberg’s method the following mean values were determined: thermal relations of the habitat (T), humidity (W), pH of the soil (R), content of nitrogen (N) and biological activity of the soil (G). The warmest are the habitats on the slope (T = 2.5) and on the summit (T = 2.3). In the depression, the habitats are very cold (T = 1.8). The driest soils are those of the summit and the slope (W = 3.5). In the depression the soils are periodically wet (W = 2.4). The pH of the soil on the summit and the slope is alkaline (R = 4.2) and in the depression it is neutral (R = 3.8). The content of N in the soil of the summit and the slope is similar (N = 2.8–3.3), and slightly lower on the slope (N = 2.7) which is due to the loss of humus caused by surface water erosion occurring on the slope of the hill. The results obtained with this method are very close to the soil parameters obtained with analytical soil science methods.Pozycja Open Access Soil conditions and xerothermic grasses communities within the western edge of the Oder in the vicinity of Szczecin(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2017) Kutyna, Ignacy; Malinowska, Katarzyna; Malinowski, Ryszard; Paprota, Dariusz; Department of Ecology, Environmental Protection and Development, West Pomeranian University of Technology, Szczecin; Department of Plant Physiology and Biochemistry, West Pomeranian University of Technology, Szczecin; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, SzczecinBased on 29 relevés were made in the area of the edge of Western Oder (Ustowo– –Pargowo) two xerothermic grass associations were distinguished. Potentillo-Stipetum capillatae phytocoenon is internally differentiated into the typical variant and the one with a significant share of shrub communities with Rhamno-Prunetea. Apart from numerous species of xerothermic grasses, the structure of the association is formed by sandy grasses taxa with Koelerio glaucae- -Corynephoretea canescentis (Sedum acre, Festuca ovina and Helichrysum arenarium are particularly frequent). Patches of this phytocoenon are found both on soils poorly formed by erosion (SY) made of clayey sands and on typical eutrophic brown soils (BEt) formed of light loam. Adonido-Brachypodietum pinnati phytocoenoses form dense grasslands with the dominance of Brachypodium pinnatum and the grasses of Molinio-Arrhenatheretea (Arrhenatherum elatius, Festuca rubra, Dactylis glomerata) together with the significant share of shrub communities species with Rhamno-Prunetea. Patches of vegetation have developed mainly on typical eutrophic brown soils (BEt) formed of sandy loam and light loam. Typologically varied soils found on the slopes of the edge are characterized by alkaline reaction and a significant content of calcium carbonate. Southern and south-eastern exposition of the slopes and soil conditions are favourable for the occurrence of xerothermic and sandy grasslands. Frequent and numerous presence of shrub communities species (Rhamno-Prunetea) in some patches of both associations, as well as grasses of Molinio-Arrhenatheretea, indicate an intermediate stage in the succession toward the development of seminatural communities as well as shrub communities. In order to preserve the unique flora and the plant communities in the area it should be used extensively (grazing, mowing).Pozycja Open Access Właściwości chemiczne gliniastych gleb uprawnych o zróżnicowanej rzeźbie terenu z uwzględnieniem zbiorowisk roślinnych po piętnastu latach odłogowania. Cz. II. Zbiorowiska roślinne w obrębie wierzchowiny, zbocza i w obniżeniu(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2012) Kutyna, Ignacy; Malinowski, Ryszard; Niedźwiedzki, Edward; Katedra Ochrony i Kształtowania Środowiska, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w SzczecinieAfter a period of 15 years, 17 phytosociological relevés were taken in 2006, on a slope top, on a slope and in a ground lowering area within the soils formed from loam. In 1993 (the first year of fallowing), segetal communities were observed on the slope, on the slope top and in the ground lowering. The slope and the slope top were settled by phytocoenoses of the Aphano-Matricarietum consolidetosum subassociation with a considerable contribution to them of the species of the Sisymbrietalia order. Whereas in the ground lowering, a typical subassociation Aphano-Matricarietum occurred. After 15 years no species characteristic of the subassociation and the association present in 1993 were recorded. In the process of the secondary succession a gramineous community Convolvulo arvensis-Agropyretum repentis appeared. In a part of this syntaxon, mainly on the slope top, a variant with Arrhenatherum elatius, and on the slope a variant with an aggressive species Calamagrostis epigejos were distinguished. In the ground lowering, dominating are the species characteristic of the Ranunculo-Alopecuretum geniculati association: Ranunculus repens, Agrostis stolonifera and Agrostis geniculatus of the Molinio-Arrhenatheretea class. In both communities the species of scrub communities Rosa canina, Crataegus monogyna and forest communities Fraxinus excelsior also occur, however, less frequently. The seeds of the latter species spread anemochorically on the studied area from the adjacent roadside plants. The presence of these species indicates the taking place process of an ecological succession leading towards the formation of scrub communities.Pozycja Open Access Właściwości chemiczne gliniastych gleb uprawnych o zróżnicowanej rzeźbie terenu z uwzględnieniem zbiorowisk roślinnych po piętnastu latach odłogowania. Część I. Właściwości chemiczne gleb(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2012) Malinowski, Ryszard; Niedźwiedzki, Edward; Kutyna, Ignacy; Meller, Edward; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Ochrony i Kształtowania Środowiska, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Gleboznawstwa, Zachodniopomorski Uniwersytet Technologiczny w SzczecinieThe fifteen year period of the fallowing of a loamy soil of a differentiated land relief caused an increase, as compared with the results of the studies carried out in 1994, in the soil acidity in all the studied elements of the relief. After such a long period of fallowing, no distinct changes were observed in humus resources, in the C : N ratio and in the content of available phosphorus. Whereas the resources of available potassium and magnesium increased in the soil layer up to a depth of 60 cm.