中文摘要：

利用湖北清江和尚洞的两支具有精确年代的年层石笋，建立了20世纪逐年石笋碳酸盐热释光积分强度序列，调查石笋热释光对气温的响应。通过石笋热释光与现代仪器记录的气温观测资料的对比，发现和尚洞石笋保存的气候信息存在11～12年的滞后。HS4和HS6石笋热释光具有相似的变化特征，且分别与宜昌年均气温具有显著的正相关性（rHS4=0．41，rH56=0．49；P〈0．01）；将热释光与气温进行11年的滑动平均，两者的相关性分别提高到0．84（HS4）和0．93（HS6）。基于以上观察，我们提出了一个新的古温度计。该温度计精度高（±0．2℃），使用简便，对定量重建过去气温变化历史具有潜在的应用价值。

英文摘要：

Paleotemperature records are generally reconstructed from pollens, tree rings, ice cores and corals, but less from speleothems. In this paper, two 20th thermoluminescence （TL）intensity sequences of annual resolution are established based on two stalagmites to investigate the potential relationship between TL and temperature. Two stalagmites were collected from Heshang cave （30°27＇N, 110°25＇E ; 294m） , south of Qingjiang valley, Changyang County, Hubei Province, Central China. As the study area is dominated by the Asian monsoon, the strong seasonality produced annually laminated speleothems in this cave. The samples used in this study are from the top sections of stalagmites HS4 and HS6 deposited in recent 100 years. As annual δ18O records of HSd and HS6 during the last 100 years has been successfully established by He et al. E451 ,the exactly same samples, 64 from HS4 and 102 from HS6, has been used in this study to measure the thermoluminescence intensity. Carbonate samples were crushed by an agate mortar and sieved through 260 mesh, then 7.5mg powder was transferred to a sample pan for TL measurement by heating from 50℃ to around 400℃ in air at a heating rate of 5℃/s. TL intensity records of HS4 and HS6 show similar variations on both annual and decadal scales. The intensity is low from 1870 to 1930,then abruptly increases in 1930＇s and maintains high values until 1950. After a gradual decrease from 1950 to 1970, the TL intensity subsequently oscillates between 1970 and 2000. The TL whole trend is coincident with the local modern annual temperature variation, except a lag of around 11 years. We postulate that chemiluminescence produced by surface oxidation of organic matters in speleothems contributes the TL and the process of dripping water in the karst system above the cave resulting in delayed response of TL to temperature. The correlation between the TL intensity and the temperature is significant （P〈0.01）for both H S4 （rM4 = 0.41 ）and H S6 （ r56 = 0. 49 ）. And the co