地球学报2011，Vol.32Issue(1)：95-100,6.DOI:10.3975/cagsb.2011.01.12
中全新世云南寻甸地区气候演化与冷干事件的石笋记录
Stalagmite Records of Climate Change and Cold-Dry Events During the Middle Holocene in Xundian, Yunnan
摘要
Abstract
Based on age-dating of TIMS-U series and analyzing carbon and oxygen isotopes and deposition velocity on XR1 stalagmite from Xianren cave in Xundian, Yunnan, the authors revealed the monsoon climate change pattern during the middle Holocene in Xundian. The climate change in Xundian can be divided into three periods approximately: (1) 8.0 ～ 6.0kaBP was a warm and wet period; (2) 6.0～5.1ka BP was a climate change period, with climate changing from wet and warm to cold and dry; (3) 5.1～2.1kaBP was a climate recovering period, during which the climate changed from cold and dry to the average climate level of the Middle Holocene.The authors also detected four clod and dry climate events during the Middle Holocene in Xundian, which perfectly responded to the global change. The first climate event that lasted from 6.0 ka BP to 5.1ka BP corresponded to the cold period during the Middle Yangshao age in archaeology, and is also called the second little ice age by Denton. The second climate event whose age span was from 4.7kaBPto 4.5kaBP was a short cooling event during the climate recovering period. The third cooling event that lasted from 3.1kaBP to 2.5kaBP was called Xizhou Cold period in Chinese history, which was equivalent to the third new ice age in Northern Hemisphere. The cooling event during 2.5kaBP to 2.1kaBP corresponded to the second cold period during the past 5000 years'climate change in China.关键词
XR1石笋/中全新世/氧碳同位素/西南季风Key words
XRl stalagmite/ mid-Holocene/ oxygen-carbon isotope/ Southwest Monsoon分类
天文与地球科学引用本文复制引用
张会领,蒲晓强..中全新世云南寻甸地区气候演化与冷干事件的石笋记录[J].地球学报,2011,32(1):95-100,6.基金项目
本文由973项目(编号:2007CB815905)、国家自然科学基金项目(编号:40830852)和ARC项目(编号:DP0773081)联合资助. （编号:2007CB815905）
