长春市城郊不同土地利用类型土壤中Cu的含量分布特征研究

目的]为了解长春市郊农田土壤中重金属cu的污染状况。方法]采用野外调查和室内分析相结合的方法，分析长春市郊不同农田类型土壤中Cu含量，运用SPSS统计分析软件、ORING作图软件对60个采样点Cu含量进行处理，并且绘制其正态分布图，进而分析不同土地利用类型土壤中Cu含量分布特征。结果]长春市郊农田土壤中cu含量范围为41．71～116．77ms／kg，平均含量为53．35mg／kg，全部样点的含量均高于其背景值；不同土地利用类型土壤中Cu含量表现为菜地〉水田〉旱田。结论]该研究揭示了不同农田类型土壤中Cu含量和分布特征。

Cu Distribution Characteristics in Different Farmland Soils of Changchun Suburb

Objective ] The aim of the research was to comprehend the soil pollution of heavy metal Cu. Method ] The method of the field inves-tigation and lab determination were adopted to sample soil and analyze Cu content in different farmland soil types. Cu content and its normal dis-tribution diagram were finished using SPSS statistical analysis software and ORING mapping software dealing with 60 Cu content data. Result] Cu contets were in the range of 41.71 - 1116.77 mg/kg, and the average value was 53.35 mg/kg in Changchun suburban farmland soil. Cu con- tents of all samples were higher than its background value. The order of Cu content in different soil types was vegetable field 〉 paddy field 〉 dry field. Conclusion ] The research revealed Cu content and its spatial distribution in different farmland soil types of Changchun suburb.