Chinese Science Bulletin

, Volume 50, Issue 20, pp 2355–2361

Paleosandstorm characteristics and lake evolution history deduced from investigation on lacustrine sediments—The case of Hongjiannao Lake, Shaanxi Province

Authors

    • Nanjing Institute of Geography and LimnologyChinese Academy of Sciences
  • Yong Wang
    • Nanjing Institute of Geography and LimnologyChinese Academy of Sciences
    • Graduate SchoolChinese Academy of Sciences
  • Xiangdong Yang
    • Nanjing Institute of Geography and LimnologyChinese Academy of Sciences
  • Enlou Zhang
    • Nanjing Institute of Geography and LimnologyChinese Academy of Sciences
  • Bao Yang
    • Key Laboratory of Ice and Cold Region Environment, Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences
  • Junfeng Ji
    • Institute of Surfacial Geochemistry, State Laboratory of Mineral Deposits Research, Department of Earth SciencesNanjing University
Articles

DOI: 10.1007/BF03183747

Cite this article as:
Shen, J., Wang, Y., Yang, X. et al. Chin.Sci.Bull. (2005) 50: 2355. doi:10.1007/BF03183747

Abstract

Sediment cores from desert lakes serve as good records of the frequency and intensity of sandstorms in history. By multi-proxy analysis of grain-size, magnetic susceptibility, TOC and Rb/Sr ratio, the paleosandstorm characteristics and lake evolution history in Yulin Area for the past 80 years. are discussed in this article. It is revealed that Hong-jiannao Lake formed in about 1928 A.D. and in its initial stage sandstorms were prevalent with three extremes taking place in 1936 A.D., 1939 A.D. and 1941 A.D. During the expansion period of 1952–1960 A.D., inflow waters to the lake increased sharply and a lot more weathered materials were carried into the lake. The frequency and intensity of sandstorms have reduced a lot since 1960s and the “double peaks” feature of the grain-size frequency curve has changed into the “single peak” feature. Study on the catchment ecology of the lake shows that the occurrence of sandstorms has been effectively restrained by the forest plantation and water and soil conservation.

Keywords

lacustrine sedimentpaleosandstorm characteristicslake evolution historyHongjiannao Lake

Copyright information

© Science in China Press 2005