中文摘要：

稀土资源开发,对矿区土壤环境特别是耕作层土壤造成了极大的污染。本文研究了赣南信丰某稀土矿区耕作层土壤环境,结果显示：研究区土壤环境均为酸性（pH〈7）,矿区下游地区土壤污染以La、Ce、Pr为主,且为多种稀土元素复合性污染。矿区有效态稀土含量与土壤pH值和有机质含量相关性较强;与污染源距离呈负相关性,但在某些取样点（有效态稀土含量及污染级别均较高）未能显示绝对的负相关性。研究表明,稀土矿区土壤环境已经受到严重污染,需要对尾矿砂进行切实有效的治理,加强稀土矿区的土壤环境修复,减少区域内的水土流失,确保稀土矿区耕作层土壤不受到进一步污染。

英文摘要：

Resource exploitation leads serious pollution of soil environment in mining area,expecially plough layer.This article studied plough layer soil environment of rare earth mining area,XinFeng GanNan.The results illustrate that the soil environment is acid（pH7）;the pollution of soil environment in downstream of mining area is mainly about La,Ce,Pr,and compond pollution of RE elements.The content of bioavailable fractions shows high positive significant correlations about pH of soil,content of organic matter;and to the distence with pollution source shows negative significant correlations,but not absolute to some samples which have high content of bioavailable fractions and high level of pollution.The study indicats that there were serious pollution in soil environment of RE mining area.It＇s necessary to take effective measures about tailings,to reinforce the environmental remediation of RE mining area,to decrease soil erosion of this area,to ensure the plough layer soil not to be the farther pollution.