离散数据地球化学编图中克里格法的应用——以津巴布韦超低密度地球化学图为例

Application of Kriging on Geochemical Mapping Method with Discrete Data:Illustrated by the Ultra-low Density Geochemical Mapping in Zimbabwe

自由网离散数据的地球化学编图以任意方式进行网格化成图存在明显不确定性,会导致地球化学特征的改变或歪曲。克里格法提供了一种更科学合理的空间估计插值方法。笔者运用该方法对津巴布韦超低密度地球化学调查数据进行了空间分析并编制了地球化学图件,研究和讨论了自由网离散数据的地球化学编图方法,评价了采用克里格法编制地球化学图的效果。

There are obvious defects and uncertainty on the geochemical mapping with free meshing and discrete data by grid interpolation. It will lead that the geochemical characteristics are changed or distorted. Kriging meth-od provides a more scientific and reasonable interpolation method for estimating the data. We discuss the applica-tion of the Kriging method on the geochemical mapping method with discrete data by spatial analysis and geo-chemical mapping of ultra-low density geochemical data in Zimbabwe, and assessed the effect of application about the Kriging method in the geochemical mapping.