基于因子分析的广西平果市土壤地球化学分区

    Soil geochemical zoning based on factor analysis in Pingguo City , Guangxi

    • 摘要: 如何从测试指标多、信息量大的土地质量地球化学调查数据中获取有用的地球化学信息是一项艰巨的任务。因子分析作为一种多元统计分析方法,在地球化学数据分析中常用来将复杂的各种地球化学指标归结为少数几个主要因子,用以反映原始数据当中的大部分信息。利用因子分析方法对广西平果市1: 25 万土地质量地球化学调查表层土壤数据进行分析,提取了能够反映其表层土壤主要地球化学信息的7个因子,划分了7个指标组合类型地球化学分区,并绘制了地球化学分区图。根据各地球化学分区特征,结合区域地质背景、指标组合的地球化学性质,探讨了各地球化学分区的地球化学含义。

       

      Abstract: Extracting useful geochemical information from land quality geochemical survey data, which often consists of numerous testing indicators and abundant information, is a challenging task. Factor analysis, as a multivariate statistical analysis method, is commonly used in the analysis of geochemical data to condense complex geochemical indicators into a few key factors that reflect most of the information in the original data. By applying factor analysis to the surface soil data from a 1: 250, 000 land quality geochemical survey in Pingguo City, Guangxi, seven factors representing the main geochemical information of the study area were identified. These factors were used to establish seven geochemical zones based on combinations of indicators, and a geochemical zoning map was created. By considering the characteristics of each geochemical zone, along with the regional geological background and the geochemical properties of the element combinations, the geological and geochemical significance of each geochemical zone was explored.

       

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