Reforestation of Brown Coal Dumps in Bashkortostan: Characteristics of the Soil and the Condition of Birch (Betula pendula Roth) Stands (Results of a 35-year Experiment)
Abstract
In 1980–1984, reforestation of the dumps of the Kumertau brown coal deposit (Republic of Bashkortostan, Russia) was carried out. Birch stands were created on the dumps of overburdened rocks. The authors studied the agrochemical properties of soils, described the state of birch stands and established the patterns of metal
accumulation in birch organs 35 years after reforestation. It is established that 35 years after planting birch trees on the dumps, the trees are characterized as ‘healthy’. The concentration of copper, zinc, lead and cadmium in birch organs changes in the following sequence: root system > bark > shoots > leaves. Soil formation processes are noted in birch stands on dumps. The upper (0–20 cm) soil layer acidity shifted by
two units to the acidic side. There is a slight decrease in the content of phosphorus and the exchange forms of calcium and magnesium. Thus, birch is a promising tree species for the reforestation of mining industry dumps.
Keywords: dumps, reforestation, Betula pendula Roth, metal accumulation, soil formation processes
References
[1] Adriano, D. C. (2001). Trace Elements in Terrestrial Environments. New York, Berlin, Heidelberg: Springer Verlag.
[2] Kolodyazhnaya, Ya. S., Kochetov, A. V., and Shumnyi, V. K. (2006). Transgenesis as a method of increasing plant resistance to elevated concentrations of heavy metals. Advances in Modern Biology, no. 5, pp. 456–461.
[3] Kulagin, A. Yu. (1998). Willow: Technogenesis and Problems of Optimization of Disturbed Landscapes. Ufa: Gilem.
[4] Radosteva, E. R. and Kulagin, A. Yu. (2011). Bioaccumulation of metals in organs of woody plants in conditions of polymetallic dumps of the Uchalinsky Ore Mining and Processing Enterprise (Republic of Bashkortostan). Bulletin of the Samara Scientific Center RAS, vol. 13, vol. 5, no. 2, pp. 200–202.
[5] Alekseev, V. A. (1990). Some problems of diagnostics and classification of forest ecosystems damaged by pollution, in Forest Ecosystems and Atmospheric Pollution, pp. 38–54. Leningrad: Science.
[6] Method for Performing Measurements of Mass Concentrations of Copper, Zinc, Cadmium and Lead in Soil Samples by Atomic Absorption Spectrometry. RD 52.18.685–2006.
[7] Batalov, A. A., Martyanov, N. A., Kulagin, A. Yu., et al. (1989). Forest Regeneration on Industrial Dumps of the Urals and the Southern Urals. Ufa: BNC Ural Department of the Academy of Sciences of the USSR.
[8] Makhonina, G. I. (1987). Chemical Composition of Plants on Industrial Dumps of the Urals. Sverdlovsk: Publishing House Ural University.
[9] Salt, D. E., Blaylock, M., Kumar, N., et al. (1995). Phytoremediation: A novel strategy for removal of toxic metals from the environment using plants. Biotechnology, vol. 13, pp. 468–474.
[10] Eltrop, L., Brown, G., Joachim, O., et al. (1991). Lead tolerance of Betula and Salix in the mining area of Mechernich/Germany. Plant and Soil, pp. 275–285.
[11] Unterbrunner, R., Puschenreiter, M., Sommer, P., et al. (2007). Heavy metal accumulation in trees growing on contaminated sites in Central Europe. Environmental Pollution, no. 148, pp. 107–114.
[12] Koptsik, S., Berezina, N., and Livantsova, S. (2001). Effects of natural soil acidification on biodiversity in Boreal Forest Ecosystems. Water, Air and Soil Pollution, vol. 130, pp. 929–934.