污水处理厂污泥用于矿山废弃地生态修复后土壤肥力变化的研究

Study on the Change of Soil Fertility After the Ecological Restoration of Abandoned Mine Land Using the Sludge of Sewage Treatment Work

指出了污水处理厂污泥结合植被种植可用于矿山废弃地的土壤恢复,探讨了生态修复后土壤的肥力变化情况。结果表明:矿山废弃地植被重建后,土壤水分物理性能得到提高,特别是土壤有所增加;伴随修复的进行,土壤中有机质、水解N、速效P、速效K含量均呈下降趋势,但总体依然保持较好的水平,能够支撑植物生长;使用污泥覆土修复后,各种植物生长良好,起到了较好的废弃地复绿作用。

Sewage treatment plant sludge combined with vegetation cultivation can be used for soil restoration in aban- doned mine land. This study explored the soil fertility change after ecological restoration. The results showed that the physical properties of soil water were improved after the vegetation reconstruction of mine abandoned land, especially the soil had increased. With the restoration, soil organic matter, dissolved N, availahle P and available K eorttent in soildecreases, the overall level is still good, which can support the growth of plants; after using the sludge to recon- struct soil, all kinds of plants grow well, which playsthe role of reforestation well.