重庆市永川区表层土壤元素的分布特征  

Research to Chemical Element Distribution of Surfical Soil in Yongchuan,Chongqing

作　　者：张国见[1,2] 宋小梅 周忠浩 李武斌 罗远良 

机构地区：[1]成都理工大学,成都610059 [2]重庆市地勘局205地质队,重庆永川402160

出　　处：《地球与环境》2011年第4期498-502,共5页Earth and Environment

基　　金：重庆市1:5万永川幅临江幅农业地质调查

摘　　要：基于大密度表层土壤样测试数据,研究了重庆市永川区各地层单元的土壤元素分布以及不同土壤酸碱度下土壤元素富集特性。结果表明:元素富集水平及富集元素数量随着地层年代的由老到新呈减小的趋势。随pH值的升高,Ca、Mg、Li、F、Ni、Th、V等元素含量逐渐升高,具有显著正相关关系(P<0.01);而Si、Zr含量则随pH的升高呈降低的趋势,呈显著负相关关系(P<0.01)。In order to understand the difference of chemical elements distribution of surficial soil,chemical elements enrichment in different stratigraphic units and soil pH characteristics were studied by investigations with sampling density of 4 point per square kilometer in Yongchuan,Chongqing,China.The results showed that element enrichment level and the number of enriched elements in surficial soil was reduced from Lower Triassic Jialingjiang(T1j)to Upper Jurassic Penglaizhen(J3p).The soil pH value was positively correlated with the contents of Ca,Mg,Li,F,Ni,Th,and V in stratigraphic units(P<0.01).But The soil pH value was negative correlated with the contents of Si and Zr in stratigraphic units(P<0.01).

关 键 词：表层 土壤 PH 母质 

分 类 号：P595[天文地球—地球化学] P596[天文地球—地质学]