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第四纪研究 1997
PAST 2000 YEARS RECORDS AND GLOBAL CHANGE
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Abstract:
The Past Global Changes (PAGES) Project has designed on the palaeoclimate and palaeoenvironment reconstruction of two temporal temporal, one of which is the last 2 000 years with the time resolution of at least deadal, and ideally annual or seasonal. Recently the Intersection of PAGES and CLIVAR has focused much attention on the diagnostic study of the climate variability on the basis of the palaeoclimate information of centural-to-millennial scales from the detailed high-resolution proxy records such as tree-rings, corals and ice-cores etc. Only by mis way could the understanding of the variability be promoted. There are abundant historical documents in China, and many achievements have ho obtained. The study of the Guliya ice core from the West Kuulun Range has established the curves of the climate change in the past 2000 years from the annual-resolved information of δ18O, glacial accumulation micro-particles and Caetc.The tree-ring research has been condueted by several groups, and a few curves of severel-centural dendroclimate have been produced. Coral study is still on its immature in China. In general, the sparse data and the absence of multi-disciplinary study have given rise to that the research on climate and environment of the past 2000years is still weak in China. In the recent several years, a series of international symposiums, such as the workshop on The Medieval Warm Period in 1991, the workshop on the high-resolution of past climate climate from monsoon Asia, and the workshop on the palaeoclimate and environmental variability in Anstral-Asian Transect during the past 2000 years held in 1995 etc, have greatly endeavored to promote the study of palaeomonsoon, ENSO and other high-resolution climatic events. What we must do at present is to establish regionally the high-resolution palaeoclimate and environmental series during the past 2000 years. The intimately joint cooperation in all aspects and much more financial support are necessary to promote this study tO a higher status.