【摘 要】
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Present study was conducted to investigate spoil characteristics under 5-yr old high-density plantations of three native trees (Albizia lebbeck A.procera and Tectona grandis) and one fast growing wood
【机 构】
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Department of Botany,Panjab University University,Chandigarh 160014,India
【出 处】
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第四届城市、工业、交通和矿山土壤国际会议(The 4th International Conference on Sol
论文部分内容阅读
Present study was conducted to investigate spoil characteristics under 5-yr old high-density plantations of three native trees (Albizia lebbeck A.procera and Tectona grandis) and one fast growing woody grass (Dendrocalamus strictus) species on coal mine spoils and same age unplanted mine spoil dump at the same area.We examined physical characters such as soil bulk density,water holding capacity,soil texture (sand,clay and silt) and chemical characters such as pH,total nutrients (C,N and P) and exchangeable cations (Ca,Mg,K and Na) in chronosequence of spoil depth (0-50 cm) at 10 cm interval under plantations and unplanted dump.A significant effect of plantations on physico-chemical characteristics (except soil bulk density) of mine spoils was found.Among species,A.lebbeck exhibited substantial improvement in mine spoil soils followed by D.strictus,A.procera and T.grandis plantation.Although chemical characteristics especially total concentrations of soil C,N and P and their ratios were significantly different among different spoil depth of each species.Plantations of all species studied had ability to improve soil chemical qualities at young stage of establishment.Compared to unplanted dump,plantation of A.lebbeck showed highest concentrations of total nutrients (C,N and P) and exchangeable cations with respect to spoil depth followed by D.strictus,A.procera and T.grandis,which confirms that some species have suitable qualifies for accelerate the soil redevelopment process at least at initial stage of rehabilitation.
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