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风成沉积物叶蜡氢同位素在揭示东亚季风区干湿变化中的原理及应用
梁承弘(), 鹿化煜()
The Application of Leaf Wax n-alkanes δD in Aeolian Sediments as a Proxy for Reconstructing Quaternary Humidity Variations in the Monsoonal East Asia
Chenghong LIANG(), Huayu LU()

图5. 东亚季风区半干旱区轨道尺度正构烷烃氢同位素记录
（a）35°N7月太阳辐射[82]；（b）黄土高原西峰剖面正构烷烃氢同位素记录[72]；（c）黄土高原蓝田、渭南剖面叶蜡脂肪酸氢同位素记录[70]（叶蜡脂肪酸与叶蜡正构烷烃合成过程、氢同位素分馏机制基本一致）；（d）三宝洞石笋氧同位素记录[83]

Fig.5. Examples of orbital timescales n-alkanes δD records in semiarid regions of east Asia monsoon regions
(a) The July insolation of north hemisphere 35°[82]； (b) n-alkanes δD of Xifeng loess section in Chinese Loess Plateau[72]； (c) n-fatty acid δD of Lantian and Weinan loess section in Chinese Loess Plateau[70] (the production and isotope fraction of n-fatty acid are similar to n-alkanes)； (d) Speleothem δ18O of Sanbao Cave[83]