Chinese Science Bulletin

, 53:3016

Climate and environment reconstruction during the Medieval Warm Period in Lop Nur of Xinjiang, China

  • ChunMei Ma
  • FuBao Wang
  • QiongYing Cao
  • XunCheng Xia
  • ShengFeng Li
  • XuSheng Li
Article

Abstract

We made multi-proxy analysis of 14C, grain size, microfossils, plant seeds, and geochemical elements on samples from a profile in the central West Lake of Lop Nur. The grain size suggests relatively stable sedimentary environment around the Medieval Warm Period (MWP) with weak storm effect, which is followed by frequent strong storm events. Abundant microfossils and plant seeds in this stage indicate a warm and humid fresh to brackish lake environment. C, N, and stable elements are high in content in the sediments while Rb/Sr, Ba/Sr, and Ti/Sr are in a steady low level. In addition, plenty of red willows lived here prior to about 700 a B.P., indicating a favorable environmental condition. The results indicate that the environment in Lop Nur and its west bank turned to be favorable at about 2200 a B.P., where the Loulan Culture began to thrive. Then the climate and environment came to be in the good condition in the Tang and Song Dynasties, when the storm effect became weaker, rainfall increased and the salty lake water turned to be brackish to fresh lake water. Hence, limnic biomass increased with higher species diversity.

Keywords

Lop Nur of Xinjiang Medieval Warm Period climate change grain size microfossils geochemistry ancient culture paleo-vegetation 

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Copyright information

© Science in China Press and Springer-Verlag GmbH 2008

Authors and Affiliations

  • ChunMei Ma
    • 1
  • FuBao Wang
    • 1
  • QiongYing Cao
    • 1
  • XunCheng Xia
    • 2
  • ShengFeng Li
    • 1
  • XuSheng Li
    • 1
  1. 1.School of Geographic and Oceanographic SciencesNanjing UniversityNanjingChina
  2. 2.Chinese Academy of SciencesXinjiang Institute of Ecology and GeographyUrumqiChina

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