The article introduces acts in force, legal acts, regulations and documents which regulate matters related to the protection of soils in Poland. The soils belong to one of the most endangered natural resources and they are a subject to systematic degradation and permanent transformation as a result of their exclusion from the natural use. Sustainable use of soils increases the level of their protection. The priority is to stop or weaken unfavorable trends and negative impacts on the soil environment. Soil resources of agricultural area in Poland are systematically decreasing and this also applies to lands in a good rural culture. According to an ecological policy, the proper use of soil and forest resources is one of the actions aimed at ensuring ecological security. Poland as a member of European Union is obligated to devise strategies taking into account the current condition of the soil environment and the degree of threat to various forms of erosion. The paper analyzes the determinants of agricultural production in the Kuyavia-Pomerania province against the background of the whole country. According to the statistical data from the last decade, estimated area changes were assessed under the influence of actions aimed at protecting soil resources. ...
The study was conducted within the Bydgoszcz limits and in the vicinity of city Bydgoszcz at seven different habitats of Hierochloë repens presence: city district Fordon - (1), (2), (3) and (4); city district Kapuściska - (5), and Białe Błota near Bydgoszcz - (6) and (7). Samples for acarological analyses were collected from the plots covered with Hierochloë repens in spring (27 May) and autumn (28 October) 2014.The density of oribatid mites on the sites with Hierochloë repens was highly variable. High density of these microarthropods was characteristic of plots (2) with Convolvulo-Brometum inermis, (5) with Arrhenatheretum elatioris and (7) covered with grassy herbaceous plants growing on fertile soils. Particularly low density of oribatid mites was observed for plot (3) with Koelerio-Corynephoretea and Festuco-Brometea communities and the lowest content of carbon and nitrogen in the soil. Depending on the site and sample collection time, four to 22 species of oribatid mites were identified. Statistical analysis (Mann-Whitney U test) of mean number of species per sample s identified two groups of plots for both sample collection terms characterized by either low (1.00-3.10) or high values (3.30-7.40) of this parameter. The first group included plots (1), (3) and (6), and the second ...
