高分辨率气候环境变化研究中的石笋微层

在全球变化研究领域，高分辨率重建 2000年来的气候环境变化是近期工作的主要内容之一。石笋微层由于其沉积界面完整，微层明显和组分构造有序，从而成为综合研究气候环境变化的理想载体。详细分析了石笋微层灰度和石笋微层厚度的成因、类型和影响因素，对石笋微层在高分辨率气候环境变化研究中的应用现状及目前所存在的问题作了简要介绍，并对该领域今后的发展方向提出了一些看法。

THE STALAGMITE MICROBANDING IN RESEARCH OF HIGH RESOLUTION CLIMATIC-ENVIRONMENTAL CHANGES

It’s one of the most important task to reconstruct high resolution climatic-environmental changes in the last 2 ka of global change. The same as other natural materials (loess、ice-core、tree rings、sea deposits), spleothems are important repositories of palaeoclimatic and palaeoenvironmental information. On the basis of sedimentary characteristics and bedding-structure, stalagmite microbanding are ideal data in research of high resolution climatic-environmental changes, able to provide climate information with an annual resolutions and much longer time span compared to tree rings. Two aspects of annual banding of stalagmite have been reported, the luminescent microbanding observed under a fluoromicroscope and the lamina which is visible to the naked eye. It involves same climatic-environmental information, such as precipitation, temperature, soil and vegetation. In this paper,  the authors analyze the causation、category and influencing factor of microbanding grey and microbanding thickness in detail, review and synthesize the recent advances in stalagmite microbanding research of high resolution climatic-environmental changes, and also point out the existing problems and forecast the trends.