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Environ Sci Pollut Res Int. 2018 Jun;25(17):17091-17099. doi: 10.1007/s11356-018-1892-7. Epub 2018 Apr 11.

Reclamation of a lignite combustion waste disposal site with alders (Alnus sp.): assessment of tree growth and nutrient status within 10 years of the experiment.

Author information

1
Department of Forest Ecology and Reclamation, Institute of Ecology and Silviculture, Faculty of Forestry, University of Agriculture in Krakow, Al. 29 Listopada 46, 31-425, Krakow, Poland. m.pietrzykowski@ur.krakow.pl.
2
Department of Forest Ecology and Reclamation, Institute of Ecology and Silviculture, Faculty of Forestry, University of Agriculture in Krakow, Al. 29 Listopada 46, 31-425, Krakow, Poland.
3
Department of Soil Science, Institute of Ecology and Silviculture, Faculty of Forestry, University of Agriculture in Krakow, Al. 29 Listopada 46, 31-425, Krakow, Poland.
4
Department of Environmental Management and Protection, AGH University of Science and Technology, al. Mickiewicza 30, 30-059, Krakow, Poland.

Abstract

Combustion wastes are characterised by extremely low N contents. Therefore, introduction of nitrogen-fixing species at the first stage of their biological reclamation is required. This paper presents an assessment of the growth parameters of alders (Alnus sp.) 10 years after their introduction to a disposal site of lignite combustion waste in Central Poland. Black (Alnus glutinosa) and grey alders (Alnus incana) were planted directly in the combustion waste. The soil amendment included three variants: control with pure combustion waste, admixture of lignite culm and addition of acid sand. Both alder species displayed good growth parameters comparable to those of alders in natural habitats. However, black alder had better growth parameters, such as stand density index (SDI), diameter at breast height (DBH) and height (H) than grey alder. The lignite amendment exerted a positive effect on tree growth, reflected in a higher SDI and H, whereas the acid sand amendment did not affect any of the growth parameters of the studied alder species. Despite the good growth parameters, the measured N:P and N:K ratios in the alder leaves largely differed from the optimal values indicating insufficient P and K supply at the combustion waste disposal site. This may pose a threat to further development of the introduced tree plantings. The introduction of alders along with the lignite addition into the planting holes seems to be a successful method of combustion waste revegetation.

KEYWORDS:

Alders; Fly ash; Lignite; Revegetation

PMID:
29644608
PMCID:
PMC6015108
DOI:
10.1007/s11356-018-1892-7
[Indexed for MEDLINE]
Free PMC Article

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