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北京石花洞地区水系的δＤ平均值为（－６５．４±３．０）‰（ＳＭＯＷ），δ１８Ｏ平均值为（－９．４±０．３）‰（ＳＭＯＷ），氚含量平均值为（３０．８±４．５）ＴＵ。石花洞洞内滴水是由地表水很快下渗得来，受古老地下水的混合作用很小。因此，洞内滴水的稳定同位素组成能够灵敏地反映地表水同位素组成（即重量加权的年平均雨水的同位素组成）的变化。影响洞内滴水的稳定同位素组成的因素主要是年平均气温、年降雨量以及降水气团的来源的变化。利用高分辨率的洞穴碳酸盐的稳定同位素记录．可以建立以湿度变化为主的古气候信息．尤其是我国季风气候的变化历史。
The average δD value of water system in Shichuadong area of Beijing was -65.4 ± 3.0 ‰ (SMOW), the average value of δ18O was (-9.4 ± 0.3) ‰ (SMOW), and the average tritium content was ( 30.8 ± 4.5) TU. Stone Flower Cave hole drip is infiltrated by the surface water quickly came, by the mixing effect of ancient groundwater is very small. Therefore, the stable isotope composition of drip in a cave can sensitively reflect the change of isotope composition of surface water (that is, the isotopic composition of weight-weighted annual mean rainfall). The factors affecting the stable isotope composition of drip in the cave are mainly the annual average temperature, annual rainfall and the source of precipitation air mass. Stable Isotopic Recording Using High Resolution Cave Carbonates. Paleoclimate information based on changes in humidity can be established. Especially the change history of monsoon climate in our country.