污灌区稀土镧分布特征及其对生态环境的影响  

Distribution and Environmental Effects of Lanthanum in Wastewater Irrigation Area

作　　者：张庆辉[1] 王贵[2] 同丽嘎[1] 

机构地区：[1]包头师范学院资源与环境学院,内蒙古包头014030 [2]鄂尔多斯职业学院,内蒙古鄂尔多斯017000

出　　处：《安徽农业科学》2012年第4期2039-2040,共2页Journal of Anhui Agricultural Sciences

基　　金：内蒙古自治区高等学校科学研究项目(NJ09142)

摘　　要：[目的]研究包头市南郊污水灌溉区稀土镧(La)分布特征。[方法]按照线型、剖面型和"梅花型"取样,测定不同研究点、区水系沉积物和土壤La含量,分析La对生态环境的影响。[结果]研究区主污水渠滨岸漫水地、四道沙河河底沉积物、工厂污水渠底部水系沉积物及其剖面样、农田土壤La元素含量分别为2 924、427.60、309.30、113.26、44.94 mg/kg,其中土壤La含量是河套地区La元素背景值1.50倍。[结论]人类活动导致污灌区外源La在土壤、水系沉积物中的超量积累。[Objective] The research aimed to study the distribution of Lanthanum in Wastewater Irrigation Area of Baotou Southern suburbs（WIAB）.[Method] Samples were collected by using linear,profile-based and quincunx to determine the content of La in stream sediment and farmland soil in different locations and regions.And the effects of La on the ecological environment were analyzed.[Result]The content of La in the main inundation sewage drainage,river sediments of Sidaoshahe,the bottom of the stream sediment in sewers of plant,sediment profile,and soil of farmland（ALSF）were 2 924,427.60,309.30,113.26,44.94 mg/kg.ALSF was larger than 1.50 times of background value in soil of HETAO.[Conclusion] Lanthanum was excessive accumulated in WIAB because of human activities.

关 键 词：镧 分布特征 生态环境影响 污灌区 

分 类 号：S154.1[农业科学—土壤学]