十种耐逆植物在和平县稀土矿区生态修复中的应用

广州市和平县稀土矿区由于采矿过程使植被受毁损,土体受破坏而使功能受损,导致土壤沙化,含菌量极低,且不同程度地存在偏酸和含盐量高的现象,使植物难以生长和形成相对稳定的群落。本研究通过现场施工的方式,发现和初步证实香根草、紫花苜蓿、柱花草、马唐草、虮子草、山毛豆、木豆、翅荚决明、油桐等多种植物具有较强的抗(耐)胁迫能力,是稀土矿区良好的植被恢复物种。根据不同植物的特点,采取不同的配置方式,取得了很好的土壤生态修复效果。

Application of Ten Stress-tolerance Plants in Ecological Restoration of Rare Earth Mine of Heping County

The vegetation was damaged and soil was destroyed in the mining process of rare earth mine of the Heping county in Guangzhou, which resulted in soil desertification, low bacterial content, acidic and high salt content, and difficulty in plant growth and formation of a relatively stable community. In this study, the plants such as vetiver, alfalfa, stylosanthes, crabgrass, nit grass, tephrosia, pigeon pea, Cassia alata L and Tung tree were preliminarily confirmed to be a strong stress-resistance (tolerance) ability and be good species of vegetation recovery of the rare earth mining by site construction methods. In addition, a good soil ecological restoration effect was achieved by different configurations according to the characteristics of different plants.