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最近千年来山东半岛西部气候环境变化的石笋δ18O、δ13C记录(Ⅰ)

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王庆, 周厚云, 迟宏, 程珂, 王红艳, 马倩倩, 王常山. 最近千年来山东半岛西部气候环境变化的石笋δ18O、δ13C记录(Ⅰ)[J]. 海洋地质与第四纪地质, 2015, 35(5): 135-142. doi: 10.16562/j.cnki.0256-1492.2015.05.016
引用本文: 王庆, 周厚云, 迟宏, 程珂, 王红艳, 马倩倩, 王常山. 最近千年来山东半岛西部气候环境变化的石笋δ18O、δ13C记录(Ⅰ)[J]. 海洋地质与第四纪地质, 2015, 35(5): 135-142. doi: 10.16562/j.cnki.0256-1492.2015.05.016
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WANG Qing, ZHOU Houyun, CHI Hong, CHENG Ke, WANG Hongyan, MA Qianqian, WANG Changshan. THE STALAGMITE RECORDS OF CLIMATE AND ENVIRONMENT CHANGE ON THE WESTERN SHANDONG PENINSULA DURING THE PAST 1000 YEARS: 18O AND 13C VALUES(Ⅰ)[J]. Marine Geology & Quaternary Geology, 2015, 35(5): 135-142. doi: 10.16562/j.cnki.0256-1492.2015.05.016
Citation: WANG Qing, ZHOU Houyun, CHI Hong, CHENG Ke, WANG Hongyan, MA Qianqian, WANG Changshan. THE STALAGMITE RECORDS OF CLIMATE AND ENVIRONMENT CHANGE ON THE WESTERN SHANDONG PENINSULA DURING THE PAST 1000 YEARS: 18O AND 13C VALUES(Ⅰ)[J]. Marine Geology & Quaternary Geology, 2015, 35(5): 135-142. doi: 10.16562/j.cnki.0256-1492.2015.05.016
shu

最近千年来山东半岛西部气候环境变化的石笋δ18O、δ13C记录(Ⅰ)

  • 1. 鲁东大学 海岸研究所, 烟台 264025;

  • 2. 华南师范大学 地理科学学院, 广州 510631

  • 基金项目:

    国家自然科学基金项目(41171158)

详细信息
    作者简介: 王庆(1968-),男,博士,教授,博士生导师,地貌学与第四纪地质学专业,E-mail:schingwang@126.com

  • 中图分类号: P532

THE STALAGMITE RECORDS OF CLIMATE AND ENVIRONMENT CHANGE ON THE WESTERN SHANDONG PENINSULA DURING THE PAST 1000 YEARS: 18O AND 13C VALUES(Ⅰ)

  • 1. Coastal Research Institute of Ludong University, Yantai 264025, China;

  • 2. School of Geography, South China Normal University, Guangzhou 510631, China

    摘要
  • Ky1石笋采自山东半岛西部的开元洞,沿生长轴方向长度75 mm。在高精度U-230Th测年基础上,通过年纹层连续计数和平均沉积速率内插/外推相结合的定年方法,确定Ky1石笋生长于892-1894AD的1 000年间。在沿石笋生长轴采集的583个样品中,选择303个进行了δ18O、δ13C测试,平均分辨率约为3年。结果显示,最近1 000年来Ky1石笋的δ18O比值变化呈现明显阶段性,显示与小冰期(LIA)和中世纪暖期(MWP)对应的数百年尺度波动。根据δ18O记录,山东半岛在1482AD前后发生与MWP/LIA转换对应的气候突变,1 482 AD前相当于夏季风强烈、降水较多的中世纪暖期,1482AD后则为夏季风微弱、降水较少的小冰期,以1609AD夏季风最弱。Ky1石笋的δ13C比值变化,也由与MWP、LIA相当的两个阶段构成,其间也存在突变关系。比较而言,δ13C变化要比δ18O显著平缓,而且LIA后期以来二者变化明显不同步。最近1 000年来,与MWP/LIA对应的气候突变相当于明朝中期;就各个朝代内部的气候变化趋势而言,不同朝代之间不尽相同;不同朝代之间的更替期均大致与MWP、LIA内部的次级气候突变时期对应。因此,中世纪暖期和小冰期内部的次级气候波动对中国社会发展的影响,可能比千年尺度上最剧烈的MWP/LIA突变本身更显著。另一方面,洞穴所在山地的土地利用程度不断提高,其与气候变化共同影响着洞穴所在山地的植被的C3/C4植物构成及土壤性质,从而影响到石笋δ13C比值。从892-1318AD,土地利用对山地植被构成、土壤特征的影响程度尚不及气候变化;1318-1479AD,已达到或超过小幅度的气候变化;1483-1779AD,达到或超过大幅度的气候变化;1779-1894AD,土地利用程度趋于稳定,气候变化对环境的影响程度则又相对凸显。
    The Stalagmite Ky1, a 75 mm long stalagmite, was collected from the Kaiyuan Cave on western Shandong Peninsula. Upon the basis of high precision U-230Th dating, further dated with annual lamination counting and interpolation/extrapolation of the average deposition rate, the stalagmite is about 1 000 years in age from 892AD to 1894AD. 583 samples are collected along the growth axis of the Ky1 stalagmite, and the δ18O and δ13C values for 303 samples are measured. The average temporal resolution is about 3 years. The δ18O values of the stalagmite Ky1 are obviously phased in the recent 1000 years. There are a series of centennial to multicentennial climatic fluctuations in the Little Ice Age (LIA) and Medieval Warm Period (MWP). The δ18O records also indicates a climate mutation occurred at about 1482AD on Shandong Peninsula corresponding to the MWP/LIA transformation, relatively wet and strong summer monsoon climate was prevailing over the Medieval Warm Period before 1482AD, and relatively dry and weak summer monsoon climates dominated the Little Ice Age after 1482AD. The weakest summer monsoon occurs in 1609AD. The δ13C curve of the stalagmite Ky1 is also composed of the two stages corresponding to MWP and LIA respectively with a mutation in between. Relatively, the curve of δ13C is smoother than the curve of δ18O and the variation in δ13C values and δ18O values are obvious out of sync in late LIA.The climate mutation corresponding to the MWP/LIA transformation was happened roughly in the middle Ming Dynasty in China. The climate variation tendency is different in different dynasties. The changing stages of different dynasties are usually corresponding to the secondary climate period within MWP and LIA. So the impact of the fluctuation of the secondary climate variation on human society development in MWP and in LIA looked more prominent than the most violent climate transition between MWP and LIA in a millennium scale. On the other hand, the degree of the land use showed unceasing enhancement in the study area together with the climate change that affected vegetation-soil-groundwater environment system in the mountain land above the cave, and the δ13C values of stalagmite. The impact level of the land use by human on the mountain vegetation composition, soil characteristics and their variation trend has not reached the level of the climate change from 892AD to 1318AD, but reached or exceeded the slight climate changes from 1318AD to 1479AD, and reached or exceeded the sharply climate change from 1483AD to 1779AD, the impact of the human land use and the environment seemed to be stabilized from 1779AD to 1894AD, and the impact of the climate change on the environment was intensified relatively.
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收稿日期:  2014-11-15
修回日期:  2015-01-20

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