%0 Journal Article %A ZHAO Yan-Feng %A GUO Heng-Liang %A SUN Zhi-Ying %A SHI Xue-Zheng %A WU Ke-Ning %T Principle Component Analyses Based on Soil Knowledge as a Tool to Indicate Origin of Heavy Metals in Soils %D 2008 %R 10.13249/j.cnki.sgs.2008.01.45 %J SCIENTIA GEOGRAPHICA SINICA %P 45-50 %V 28 %N 1 %X Fristly, the origin of heavy metals in soils were researched with the aid of Principle Component Analyses (PCA) in Wuxi peri-urban area and in Zhengzhou suburb. In PCA, combined with soil heavy metals, soil basic properties were also utilized based on soil knowledge. Secondly, the results of PCA based on different sampling designs were compared. The results of this paper showed that it was helpful to distinguish the sources of heavy metals in soils using PCA based on soil knowledge. However the errors of PCA caused by unreasonable sampling designs should be noticed. %U http://geoscien.neigae.ac.cn/EN/10.13249/j.cnki.sgs.2008.01.45