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Post-mine sulfurous soil chemistry in leaching experiment under controlled conditions at different tree species litter addition

Likus-Cieślik J., Pietrzykowski M.

Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski

2017

nr 167 (47)

34--46

Impact of organic matter on soil chemistry of former Jeziórko sulfur mine was investigated. In research two types of substrate were used: less contaminated (mean 5,090 mg kg-1 S) and high contaminated (42,500 mg kg-1S). Soil substrates were tested with addition of birch or pine litter. The composites (soil substrate + tree litter) were rinsed with water during 12 weeks of experiment. In the obtained leachate pH, EC, DOC (dissolved organic carbon), N, Ca, Mg and S were determined. The results indicate that the rate and amount of leached elements did not depend on litter, but firstly depend on level of sulfur contamination.

Zbadano wpływ materii organicznej na chemizm gleby byłej kopalni siarki Jeziórko. W badaniach wykorzystano dwa rodzaje substratu: mniej zanieczyszczony (średnio 5090 mg kg-1 S) i wysoce zanieczyszczony (42 500 mg kg -1 S). Podłoża glebowe badano z dodatkiem ściółki brzozowej lub sosnowej. Kompozyty (podłoże gleby + ściółka drzewna) płukano wodą w ciągu 12 tygodni eksperymentu. Otrzymanym odcieku oznaczono EC, DOC (rozpuszczony węgiel organiczny), N, Ca, Mg i S. Wyniki wskazują, że szybkość i ilość wyługowanych pierwiastków nie zależą od ściółki, ale zależą od poziomu zanieczyszczenia siaką.

A preliminary assessment of soil sulphur contamination and vegetations in the vicinity of former boreholes on the aff orested post-mine site Jeziórko

Likus-Cieślik J., Pietrzykowski M., Sliwińska-Siuśta M., Krzaklewski W., Szostak M.

Geology, Geophysics and Environment

2015

Vol. 41, no. 4

371--380

The work aims to assess the degree of soil sulphur contamination of the various abandoned reclamation efficiencies, within the microhabitats formed in the “Jeziórko” inoperative boreholes of former sulphur-mining areas. These areas have been reclaimed to the forest. Three plot categories were initially determined in the post-mining areas: category D – degraded, i.e. ineffectively reclaimed and unsuccessfully afforested plots, with low cover-abundance or complete lack of vegetation, pine stands category, category (P) – birch stands and category (B) – successfully afforested. Afterwards, four circular plots were defined within each of the determined categories (4 replications, i.e. a total of 12 plots). For each plot, cover-abundance (according to the Braun-Blanquet scale) and dominant herbaceous vegetation species, tree species and stand density were determined. Height (Ht) and diameter at breast height (DBH) measurements were taken, and a vitality assessment was completed, according to the IUFRO classification. Soil samples were collected at each plot, in five points, at two different depths (0–5 cm and 5–40 cm). Finally, laboratory analysis was undertaken. Soil properties such as texture, pH, electrical conductivity (EC), hydrolytic acidity (Hh), the contents of soil organic carbon SOC, total nitrogen TN, total sulphur TS, and exchangeable cations (Ca2+, Mg2+, K+, Na+) were determined. Soils from the D plot category were characterised by high sulphur contamination, excess salinity (EC) and strong acidity in top soil. These parameters indicated that completed neutralization was not performed effectively at certain sites. Pine (P) and birch (B) stands categories showed good growth rates and soil parameters, indicating that the reclamation treatments were completed successfully.