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Geoscience ›› 2019, Vol. 33 ›› Issue (02): 305-314.DOI: 10.19657/j.geoscience.1000-8527.2019.02.06

• Geochemistry • Previous Articles     Next Articles

Soil Geochemical Characteristics of Shangqiu Area in Henan Province

ZHANG Yan1(), LI Yusong2, SHENG Qi1, PAN Hanxiang1, XIE Yujie1   

  1. 1. Henan Geochemical Ecological Restoration Engineering Research Center, Henan Institute of Geological Survey, Zhengzhou, Henan 450001, China
    2. No.2 Institute of Geo-environment Survey of Henan, Zhengzhou, Henan 450001, China
  • Received:2018-02-22 Revised:2018-10-16 Online:2019-05-08 Published:2019-05-08

Abstract:

Based on the Multi-Purpose Regional Geochemical data of Shangqiu area in Henan Province and on the basis of normal and logarithmic normal tests, we calculated geochemical baseline and background values of 54 elements(indicators) in soil, analyzed enrichment or dilution of main elements in soil, and discussed geochemical characteristics of elements in surface soil. Results show that compared with national values, the geochemical baseline values are generally low. The content of Se is the lowest with only 0.28 times of the national value, while CaO is the highest, which is 1.96 times that of the country. The differences between baseline and background values of most elements(indicators) are not obvious, due to slight hyper-genesis effect and human activities; however, elements including Corg, N, Se, Hg, P, TC are enriched in surface soil because of obvious anthropogenic input. The factor analysis shows that the weathering, leaching and plant rhizosphere enrichment are the main factors affecting the geochemical characteristics of surface soil in the study area.

Key words: soil geochemistry, background, baseline, Shangqiu area, Henan Province

CLC Number: