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首页> 外文期刊>The Journal of Chinese Geography >CLIMATIC RECORDS FROM ANNUAL LAYERS AND STABLE ISOTOPES OF A STALAGMITE IN BEIJING OVER THE LAST 2300 YEARS
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CLIMATIC RECORDS FROM ANNUAL LAYERS AND STABLE ISOTOPES OF A STALAGMITE IN BEIJING OVER THE LAST 2300 YEARS

机译：近2300年来北京的一次年青层的气候记录和稳定的石笋同位素。

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摘要

In this paper the authors report a preliminary study on a Holocene stalagmite from Shihua Cave in Southwest Beijing. The result shows that the thickness of annual growth layers which is defined by annual deposit hiatuses preserve changes with precipitation. In light with the thickness of annual layers the authors reconstruct the climatic variation history of the last 2300 years m Beijing area. The climatic patterns seems to reappear irregularly on millennium to decade scales in the last 1000 years. The stable isotopic sequence interprets that the climate and environment in Beijing could be separated into two stages in the late Holocene: the monsoon was strong and the environment was wet in the former stage and in the latter stage the monsoon was weak and the environment was dry. The annual layers and oxygen isotope could be taken as natural signals and carbon isotope as a comprehensive signal containing the natural information and the information of anthropogenic activity.
机译：本文作者报道了北京西南地区石花洞全新世石笋的初步研究。结果表明，年生长层的厚度由年沉积裂隙确定，保留了降水的变化。考虑到年表层的厚度，作者重建了北京地区过去2300年的气候变化历史。在过去的1000年中，气候模式似乎在千年至十年的尺度上不规则地重新出现。稳定的同位素序列解释了全新世晚期北京的气候和环境可以分为两个阶段：季风强，前期环境湿润，后期季风弱，环境干燥。年层和氧同位素可以看作是自然信号，碳同位素可以作为包含自然信息和人为活动信息的综合信号。

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