Holocene climate changes in the monsoon/arid transition reflected by carbon concentration in Daihai Lake of Inner Mongolia
Holocene climate changes in the monsoon/arid transition reflected by carbon concentration in Daihai Lake of Inner Mongolia
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内蒙古岱海碳浓度反映的全新世季风/干旱转换气候变化
DOI：
10.1191/0959683606hl950rp
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发表时间：
2006-05
期刊：
影响因子：
2.4
通讯作者：
Nakamura, T
中科院分区：
文献类型：
--
作者：
Liang, WD;Xiao, JL;Inouchi, Y;Liu, BL;Wu, JT;Si, B;Nakamura, T
对在滇西北岱海中部找回的2个沉积物岩心进行了2 ~ 4 cm间隔的总无机碳和有机碳（TIC和TOC）浓度分析。推断TIC浓度反映了湖区的温度，TIC浓度的增加意味着温度的增加。TOC浓度反映了湖盆降水，TOC浓度越高，降水越多。通过对代海沉积物的TIC和TOC记录的AMS 14C时间序列，揭示了中国中北部地区近12 000年的温度和降水变化的详细历史。全新世开始于约11 500 cal. yr BP，是一个冰期后的温暖时代，可分为3个阶段：早期（约11 500-8100 cal. yr BP）、中期（约8100-3300 cal. yr BP）和晚期（约3300-0 cal. yr BP）。全新世早期气候偏暖偏干，中期气候偏暖偏湿，晚全新世气候偏冷偏干，但在1700 ~ 1300 cal. yr BP之间出现了相对偏暖偏湿的间歇期。全新世气候最佳期是指中国中北部在约8100 - 3300 cal. yr BP之间出现的一段大暖湿气候的后冰期，这一时期的气候变化多端，不时出现凉爽和/或干燥事件。我们推断温度的变化是由北半球夏季太阳辐射的变化直接控制的，这种变化是由地球轨道参数的渐进变化引起的。而季风降水的增加可能与低纬太平洋海表温度的升高、西太平洋暖池温度和规模的增加以及西太平洋黑潮向西移动和增强密切相关。
Two sediment cores recovered in the central part of Daihai Lake in north-central China were analysed at 2-to 4-cm intervals for total inorganic and organic carbon (TIC and TOC) concentrations. The TIC concentration is inferred to reflect temperatures over the lake region and an increase in the TIC concentration implies an increase in the temperature. TOC concentration is considered to reflect the precipitation in the lake basin and higher TOC concentrations denote more precipitations. Thus AMS 14C time series of the TIC and TOC records of Daihai Lake sediments uncovers a detailed history of changes in temperature and precipitation in north-central China during the last c. 12 000 yr. The Holocene, an epoch of postglacial warmth, started c. 11 500 cal. yr BP, and can be subdivided into three stages: the early (c. 11 500-8100 cal. yr BP), middle (c. 8100-3300 cal. yr BP) and the late Holocene (c. 3300-0 cal. yr BP). The climate was warm and dry during the early Holocene, warm and wet during the middle Holocene, and in the late Holocene became cooler and drier but displayed a relatively warmer and wetter interval between c. 1700 and 1300 cal. yr BP. The Holocene Climatic Optimum, defined as a postglacial episode of both megathermal and megahumid climate, might have occurred in north-central China between c. 8100 and 3300 cal. yr BP, and the climate during this period was variable and punctuated by cool and/or dry events. We infer that changes in the temperature were directly controlled by changes in summer solar radiation in the Northern Hemisphere resulting from progressive changes in the Earth's orbital parameters. Whereas an increase in the monsoonal precipitation could be closely related to an increase in the sea surface temperature of the low-latitude Pacific Ocean, an increase in the temperature and size of the Western Pacific Warm Pool and a westward shifted and strengthened Kuroshio Current in the western Pacific.
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DOI：
10.1016/0031-0182(91)90041-o
发表时间：
1991-05-01
影响因子：
3
作者：
LISTER, GS;KELTS, K;NIESSEN, F
通讯作者：
NIESSEN, F
DOI：
10.1016/0031-0182(70)90097-0
发表时间：
1970-07
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
U. Hafsten
通讯作者：
U. Hafsten
影响因子：
2.9
作者：
I. Campbell
通讯作者：
I. Campbell
DOI：
10.1007/978-94-017-4841-4
发表时间：
1984
期刊：
Arctic and alpine research
影响因子：
--
作者：
J. Hollin;A. Berger;J. Imbrie;J. D. Hays;G. Kukla;B. Saltzman
通讯作者：
J. Hollin;A. Berger;J. Imbrie;J. D. Hays;G. Kukla;B. Saltzman
影响因子：
8.3
作者：
Stuiver, M;Reimer, PJ;Spurk, M
通讯作者：
Spurk, M