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Fractional Composition of Organic Matter and Properties of Humic Acids in the Soils of Drained Bogs of the Siedlce Heights in Eastern Poland

Becher Marcin, Tołoczko Wojciech, Godlewska Agnieszka, Pakuła Krzysztof, Żukowski Emil

Journal of Ecological Engineering

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2022

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Vol. 23, nr 4

208--222

EN

The studied bogs of the Siedlce Heights in eastern Poland are currently undergoing decession. In the course of pedological studies, a significant modification of the structure of soil profiles caused by the murshing process was found. The total contents of carbon and nitrogen values (TC/TN = 11.1–17.3) obtained in the study, as well as slight acidification (pHKCl 5.42–6.15) indicate the eutrophy of the studied soil environment, high biological activity and a significant degree of organic matter processing as a result of the processes of mineralization and humification. In addition, the upper levels covered by the process of murshing, compared to peat, are characterized by lower carbon content and, most often, similar nitrogen content. In the studied soils, humic substances are mostly represented by the fraction of humic acids. As a consequence, high values of the quotient expressing quantitative relations between soil humus fractions (HAs/FAs) were noted. For all profiles, the highest share of fulvic acids was recorded in turf murshic levels (M1). The occurrence of the most mature humic acids was found in the peat levels not covered by secondary transformation processes after dehydration.

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The Effect of Waste Materials on the Content of Some Macroelements in Test Plants

Godlewska Agnieszka, Becher Marcin

Journal of Ecological Engineering

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2021

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Vol. 22, nr 4

167--174

EN

The study reported here was to determine the effect of an application of organic and mineral materials and their mixtures, combined with mineral fertiliser regime, on the content of selected macroelements in cocksfoot grass and maize. The trial was a completely randomised arrangement with three replicates. Two experimental factors were tested: factor A – fertilisation with organic and mineral materials ( sewage sludge fresh and composted, hard coal incineration ashes , calcium carbonate, mixture of this components) and factor B – mineral fertilisation. The observed effects are indicative of the legitimacy of applying sewage sludge and its mixture with hard coal ash to fertilise agricultural crops as this would reduce reliance on mineral fertiliser, which is very desirable in sustainable agriculture. Mineral fertilisation applied to both the test plants significantly reduced their contents of calcium and magnesium but it increased their content of potassium.

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Weight of diagnostic characteristics in the assess ment of tourism potential of rural areas according to Siedlce inhabitants

Godlewska Agnieszka, Ciepiela Grażyna Anna, Soroka Andrzej

Geography and Tourism

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2021

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Vol. 9, No. 1

33--46

EN

The presented work is an attempt to determine the importance of individual diagnostic characteristics conditioning rural tourism development by calculating their weights. The research was conducted in 2020 and involved the inhabitants of the city of Siedlce. The research method comprised a diagnostic survey. The authors’ research tool of choice was a questionnaire. The research pertained to an assessment of characteristics reflecting the tourism potential of rural areas in Poland. Evaluation of attitudes was based on a 10-grade Likert scale. The resulting point scores were used to calculate weights of characteristics affecting tourism development in rural areas. The characteristics representing structural resources which had the greatest impact on rural tourism development included: presence of natural water bodies in the commune, number of historic sites, number of food and beverage serving establishments, convenient road access to the commune’s administrative centre, and distance between the locality and the nearest town whose population exceeds 20 thousand inhabitants. Considering functional resources, indicators which may enhance an area’s attractiveness to tourists include commune’s ability to obtain EU funds and their expenses on tourism and entrepreneurship.