华东多目标区域地球化学调查区土壤常量元素地球化学特征  

Geochemical Characteristics of Macro Elements in Soils in the Region Covered by Multi-Purpose Geochemical Survey in Eastern China

作　　者：张明[1,2] 陈国光[2] 高超[3] 杨辉[2] 刘红樱[2] 梁晓红[2] 尹爱经[3] 张徐[3] 

机构地区：[1]中国地质大学地球科学学院,武汉430074 [2]中国地质调查局南京地质调查中心,南京210016 [3]南京大学地理与海洋科学学院,南京210093

出　　处：《吉林大学学报（地球科学版）》2014年第3期995-1002,共8页Journal of Jilin University：Earth Science Edition

基　　金：中国地质调查局地质调查专项项目(1212011220053);全国土壤污染现状调查及污染防治专项(GZTR20060202;GZTR20070205)

摘　　要：为了研究土壤常量元素来源及分布特征，分析了华东多目标地球化学调查区表层土壤和深层土壤常量元素质量分数的关系，以及不同成土母质发育的土壤常量元素质量分数之间的相互关系。结果显示：在该地区表层土壤和深层土壤中，常量元素存在显著相关性，质量分数比值为0．75～1．04，说明该区域表层土壤常量元素与深层土壤属于同一物质来源，主要来源于成土母质；常量元素在不同地质单元区土壤质量分数的高低及变异系数的大小除了成土母质原因，元素自身地球化学性质也是其主要影响因素；元素之间相关性及因子分析很好地区分出了在该地区成土过程中元素共生组合特征，即 CaO MgO Na2 O、Al2 O3 TFe2 O3 K2 O、SiO23个组合。通过分析可以得出在该地区表层土壤常量元素对成土母质有良好继承性，因此能够利用表层土壤元素组合特征和质量分数高低在一定程度上辨别该地区土壤的成土母质岩性、来源和土壤机械组成。In order to explore the sources and distribution of macro-elements in soils,relationships between surface soils and deep soils,relationships between ratios and elements among different parent materials were studied in multi-purpose geochemical survey area of East China.The results showed that the macro-elements in surface soils and deep soils were significantly correlated,and ratios in mass ranged from 0.75 to 1.04 in the study area,The analysis results presented that macro-elements in surface soils mainly originated from parent material, and the distribution of geochemical elements is primarily influenced by both parent material and the geochemical characteristics of macro-element.Correlation analysis and factor analysis were applied to distinguish the paragenesis and assemblage rules in soil-forming process,which were CaO MgO Na2 O,Al2 O3 TFe2 O3 K2 O and SiO2 .The anlysis showed macro-elements had good Inheritance from parent materials,and elements paragenesis and assemblage rules and ratios in soils can be used to distinguish the lithology,sources and soil particle composition.

关 键 词：常量元素 地球化学 华东地区 土壤 因子分析 

分 类 号：P595[天文地球—地球化学]