石灰土元素垂向分布地化特征研究  

Research of Geochemical Characteristics of the Vertical Distribution of Elements in Lime Soil

作　　者：谢代兴[1] 苏春田[1] 杨杨[1] 

机构地区：[1]中国地质科学院岩溶地质研究所/国土资源部,广西壮族自治区岩溶动力学重点实验室,桂林541004

出　　处：《科学技术与工程》2015年第6期140-145,共6页Science Technology and Engineering

基　　金：中国地质调查项目(1212011220950)资助

摘　　要：针对高原残坡积石灰土元素的垂向变化的地化特征研究不足,缺乏垂向对比分析的问题,为研究石灰土元素垂向的地化特征、迁移聚失及丰度变化,了解土壤元素的空间分布及补偿状态,以云贵高原南部广南县南屏、珠街等地母岩为T1、P1、D2、∈3的石灰土为研究样本,实地调查、采样、检测。分析及计算出：土壤元素Si、Al、K含量为38.18%-1.54%,Ti、Mg、Ca、Mn含量为0.83%-0.042%,其他元素为0.111%-0.000 01%,Ⅲ〈Ⅱ〈Ⅰ类型占62.5%;Qu占85.3%,Qi为86.6%,土壤Pi占68.5%。结果为：母岩风化至成土过程中元素以迁移流失为主,土壤元素相对母岩以迁移聚集为主,丰富级元素多,底层土元素淋淀较表层土高。Inadequate research of the geochemical characteristics in vertical change for the plateau residual slope lime soil elements,and the comparative analysis of vertical are lack. To study of geochemical features,elements transfer and abundance changes on calcareous soil in vertical,the spatial distribution and state compensation of soil element were understood. The calcareous soil in T1、P1、D2、∈3was investigated,sampled amd tested in Nanping and Zhujie. The results showed that： the contents of Si、Al、K were 1. 54% -38. 18% and Ti、Mg、Ca、Mn were0. 042%- 0. 83%,others were 0. 000 01% - 0. 111%,The proportion of Qijis 85. 3% and Qiis 86. 6%,Pi of soil is 68. 5%. In the process of soil formation,the elements ware to migrate erosion,soil element relative to parent rock is given priority to with migration accumulation,rich level elements,the underlying soil elements leaching lake the topsoil is high.

关 键 词：石灰土 元素含量 地化特征 丰度评价 植物矿质成分 讨论 

分 类 号：S151.9[农业科学—土壤学]