【摘要】 矿区废弃矿地面临的主要生态学问题是表土层破坏,选取优良的先锋物种进行植被恢复对矿废弃地表层土修复和加快生态演替起着关键作用.本文以梅州市平远县仁居稀土矿为例,调查香根草作为先锋植物在稀土矿废弃地生态演替情况以及实验分析得出不同植物群落下的土壤侵蚀模数和土壤理化性质,通过实地调查和实验得出香根草在稀土矿废弃地的植被恢复过程中加快了生态演替速度,具有护坡、固土、涵养水源、改善土壤理化性质的作用,但氮磷钾的含量较低,肥力较差.讨论得出增施肥料,培育壮苗是香根草植被修复的关键措施,利用多物种相结合方式加快稀土矿废弃地植被恢复,促进生态演替.更多还原

【Abstract】 The main problems to abandon ore mine are soil ecology destruction.The restoration of vegetation on abandoned mine rehabilitation practice proves to be the most effective way.Based on the abandoned rare earth mine in Pingyuan,Meizhou,this article researches the ecological succession of the veticeria zizanioides regarded as the avant-courier plants on the abandoned rare earth mine,and the influence of the physical-chemical character of the soil.The samples of earth surface and experiement analysis depend on the different phytocoenosiums,which are organized off handfive places including fifty examples.The experiment shows the soil erosion numbers,and soil physical-chemical character of different plant communitives.It also indicates that,daring the recovery of the plants in the abandoned rare earth mine,vetiveria zizanioides has the affection of protecting slopes,consolidating earth,storing water and improving the physical-chemical character of the soil.What’s more,after discussion,we get that taking advantage of the combination of many species can quicken the recovery of plants in abandoned rara earth mine and accelerate ecological succession.更多还原