Abstract
A study was conducted on high-density young plantations of three native trees (Albizia lebbeck, Albizia. procera and Tectona grandis) and one native woody grass species (Dendrocalamus strictus) to examine their influence on total nutrient concentrations of coal mine spoil during early phase of plantation establishment. Soil samples were analyzed for total organic carbon (SOC), Kjeldahl nitrogen (TKN) and phosphorus (TP) at spoil depths of 0–10 and 10–20 cm under 4-and 5-year-old plantations of all species. A significant effect on concentrations of total SOC, TKN and TP were observed due to plantation age, species and soil depth. However, corresponding concentrations (SOC, TKN and TP) were substantially lower at spoil profile of 10–20 cm. In comparison, plantation of A. lebbeck showed greater SOC and nutrient concentrations followed by D. strictus, A. procera and T. grandis, respectively. Therefore, present study clearly indicates attributing qualities of plantation towards improving redeveloping soil of mine spoil varied with species.
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