铜陵铜矿尾矿理化性质的变化对植被重建的影响

通过野外调查和室内分析，对铜陵不同弃置堆放时间的铜矿尾矿的理化性质及植被定居状况进行了研究。结果表明，随着堆放时间的推移，表层尾矿的稳定性增加，基质结构改善，持水肥能力提高，有机质，全氮、有效磷、速效钾、有效铜及水溶性盐类含量上升，ｐＨ值降低，有的甚至出现酸化现象。铜矿尾矿的植被定居状况与其堆放时间及理化性质的变化有着密切关系。

Study on the Effects of Physical and Chemical Property Changes of Copper Mine Tailings on Vegetation Rehabilitation in Tonling Copper Mine.

Field investigations and laboratory analyses have been conducted for the study of the physical and chemical properties of copper mine tailings with different piling times and the status of vegetation rehabilitation in Tonling Copper Mine. The results of the study showed that with the laps of time,there were changes of physical and chemical properties in the upper layer tailings.The changes including the increase of stabilization, the amelioration of substrate structure, the increase of water holding and fertility keeping capacities, the descent of pH values and the increase of concentrations of organic matter, total N, available P, available K, available Cu and water soluble salts. Sometimes the decrease of pH values could result in acidification of the surface tailings. It could be concluded that the status of vegetation rehabilitation on copper mine tailing heap is closely related to the lapse of time and the changes of physical and chemical properties of the surface tailings.