中国近2000年来气候变化石笋记录研究进展

哥本哈根气候大会的召开,使得近2 000年来的气候变化研究倍受关注。本文对气候变化石笋记录,尤其是我国近2 000年来气候变化石笋记录取得的主要成果进行了总结。已有研究的进展主要在于:发现在中国季风区石笋记录中存在近2 000年来的一系列气候事件,并对其进行了高分辨率重建;对地区热月温度进行了年分辨率的重建,以及通过集成研究发现了"环流效应"等等。但以往的研究仍存在石笋古环境代用指标机理、年代学以及区域代表性石笋记录研究不够等问题。为此,文中提出了加强年际分辨率氧同位素古环境机理,特别是大气降水到石笋的一整套迁移变化过程的研究,以及与其他古环境代用指标的响应机理进行综合研究,加强近2 000年来石笋年代学研究和加强区域性代表性石笋记录研究等建议。

Research progress on the recent 2 000 years' climate change revealed by stalagmite record in China

The UN climate conference held in Copenhagen has directed more attention to the study on the recent 2 000 years＇ climate change.The main achievements on study of climate change revealed by stalagmlte record,especially the climate change in the recent 2 000 years in china,is summarized in the paper as follows,a series of climate events in the recent 2 000 years are recorded by the stalagmite in China monsoon area;high resolution reconstruction is made;the temperature in hot month is reconstructed with annual resolution;and ＂circulation effect＂ is discovered by integrate research,etc.But there are also many problems need to be resolved,such as oxygen isotope mechanism,chronology,regional and typical stalagmite research as well.So it is proposed that the oxygen isotope mechanism research with resolution in annual scale, especially the whole migration and changes process of oxygen isotope from precipitation to stalagmite,should be enhanced;and the integrated study of stalagmite record＇s respond mechanism to climate change by comparing with other proxy record should be done,and research on the recent 2 000 years＇ chronology and on the regional and typical stalagmite should be enhanced.