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利用洞穴碳酸盐沉积物中的氧碳同位素来作为气候替代指标的一个突出问题是其氧碳同位素的指代意义在全球是否具有普适性？这直接关系到数据的解译及所取得信息的可靠性。桂林地区5年降水的系统研究表明，该地区降水氧同位素特征主要受季风类型及降水云团来源和性质的控制，在不
A prominent issue of using oxygen and carbon isotopes from cave carbonate sediments as a proxy for climate change is whether its oxygen and carbon isotopic meanings are universal across the globe. This is directly related to the interpretation of the data and the reliability of the information obtained. A systematic study on five-year precipitation in Guilin showed that the characteristics of the oxygen isotope of precipitation in this area are mainly controlled by the source and nature of monsoon types and precipitation clouds.