SCIENTIA GEOGRAPHICA SINICA ›› 2008, Vol. 28 ›› Issue (1): 45-50.doi: 10.13249/j.cnki.sgs.2008.01.45

• 论文 • Previous Articles     Next Articles

Principle Component Analyses Based on Soil Knowledge as a Tool to Indicate Origin of Heavy Metals in Soils

ZHAO Yan-Feng1,4, GUO Heng-Liang1,4, SUN Zhi-Ying2, SHI Xue-Zheng2, WU Ke-Ning3   

  1. 1. Institute of Natural Resource and Eco-Environment, Zhengzhou University, Zhengzhou, Henan 450001;
    2. Institute of Soil Science, Chinese Academy of Sciences, Nanjing, Jiangsu 210008;
    3. Department of Land Science and Technology, China University of Geoscience, Bejing 100083;
    4. School of Environment and Water Conservancy, Zhengzhou University, Zhengzhou, Henan 450001
  • Received:2006-12-18 Revised:2007-04-21 Online:2008-01-20 Published:2008-01-20

Abstract: 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.

Key words: Principle Component Analyse, heavy metals in soil, sources,soil knowledge

CLC Number: 

  • S131.3/S159.2/S153.6