Acta Geographica Sinica ›› 2014, Vol. 69 ›› Issue (11): 1707-1717.doi: 10.11821/dlxb201411011

• Orginal Article • Previous Articles     Next Articles

The sedimentary characteristics of Buxi loess profile in Shandong Province and their paleoclimatic and palaeoenvironment significance

Shujian XU1(), Xinchao DING1,2, Zhichao NI1,2   

  1. 1. Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, Linyi University, College of Resources and Environment, Institute of Water and Soil Conservation and Environmental Protection, Linyi 276005, Shandong, China
    2. College of Population, Resources and Environment, Shandong Normal University, Jinan 250014, China
  • Received:2014-08-09 Revised:2014-09-06 Online:2014-11-20 Published:2014-11-20
  • Supported by:
    National Natural Science Foundation of China, No.41172160, No.41472159;Funds for International Cooperation and Exchange of the National Natural Science Foundation of China, No.41210304041, No.41310104020


Field work was carried out systematically on one loess section at Buxi of Zhangqiu in Shandong Province. Grain size, magnetic susceptibility and optically stimulated luminescence (OSL) dating of Buxi loess section were conducted. Results indicate that: (1) According to Sahu's discrimination formula, it is found that the main sedimentary deposits are formed in aeolian environment. By analyzing grain-size class vs. standard deviation values method, environment-sensitive size fractions of this section are 7.08-8.91 µm and 39.81-50.12 µm respectively; (2) Changes of magnetic susceptibility and percentages of different size fractions are correlated. In this section, the quality of low-frequency and high-frequency magnetic susceptibility changes in the range of: 32.38×10-8-138.46×10-8 m3 kg-1 and 30.62×10-8-123.31×10-8 m3 kg-1 (ranges from A to B). The change of magnetic susceptibility can reflect the palaeoclimate variation information to some extent; (3) The section is divided into three loess layers and three paleosol layers, which records the information of climatic change and environmental evolution over the last interglacial stage.

Key words: Buxi of Shandong Province, loess, grain size, magnetic susceptibility, optically stimulated luminescence dating