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基金项目:中国地质调查局项目“乌蒙山区地质矿产综合调查”(DD20179222)
作者单位
刘亮,张杰,张杰琼,等 攀枝花市自然资源和规划局 
摘要:
      采集四川旺苍化龙乡10个垂向剖面分层样100件,对其中的SiO2、Fe2O3、Cr、Cd、Ge、Se等27个组分进行测定。通过不同类型土壤层元素平均值、富集系数、变异系数的分析,对元素的分布、迁移规律、来源等进行探讨。结果显示:与表层土壤背景值相比,Mo、As含量偏高而强富集,F、Ge富集,SiO2、Fe2O3、Cr、Cd、B、Ga、P呈高背景分布,P2O5、S、Ni、Se呈地球化学亏损分布,其余元素呈低背景分布;Cd(Cv=2.33)及As(Cv=2.85)呈强分异,其他元素在垂向剖面上呈均匀—较均匀分布;P2O5、S、B、Cu、Zn、As、Pb、Hg、Se的平均含量随深度增加不断减小,SiO2、Fe2O3、Cr、Ga等基本没有变化,F、Mn随深度增加先升高后降低,Ge随深度增加先降低后升高。研究区具有适合茶叶种植的富Ge土壤。
关键词:垂向剖面  土壤  地球化学  四川旺苍
Abstract:
      Totaled 100 layered samples were collected in 10 vertical sections in Hualong area of Wangcang County, Sichuan Province, among which 27 elements including SiO2, Fe2O3, Cr, Cd, Ge and Se were determined. Based on the analysis of the average value, enrichment coefficient and variation coefficient of elements in different types of soil layers, the distribution, migration regularity and source of elements were discussed. The results show that: compared with the background value of surface soil, Mo and As contents are higher with strong enrichment; F and Ge showing enrichment; SiO2, Fe2O3, Cr, Cd, B, Ga and P showing high background distribution; P2O5, S, Ni and Se showing geochemical deficit distribution, and other elements showing low background distribution. Cd (Cv=2.33) and As (Cv=2.85) are strongly differentiated, and other elements are evenly and roughly evenly distributed in the vertical section. The average content of P2O5, S, B, Cu, Zn, As, Pb, Hg and Se decreased with the increase of depth, while SiO2, Fe2O3, Cr, Ga and other elements remained basically unchanged; F, Mn increased first and then decreased with the increase of depth; Ge decreased first and then increased with the increase of depth, showing Ge rich soil suitable for tea planting. 
Keywords:vertical profile  soil  geochemistry  Wangcang County in Sichuan Province
刘亮,张杰,张杰琼,等.四川旺苍化龙垂向剖面土壤地球化学特征[J].地质学刊,2021,45(1):21-28