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	萨拉乌苏河流域MGS2层段粒度与CaCO_3记录的千年尺度气候变化
其他题名	Millennium-scale Climate Variations from the Record of Grain-size and CaCO_3 During the Pleniglacial in the Salawusu River Valley,China
	王丰年 1; 李保生 2; 王江龙 3; 牛东风 1; 温小浩 1; 李志文 4; 司月君 1; 杜恕环 5
来源期刊	地理科学
ISSN	1000-0690
出版年	2012
卷号	32 期号:5 页码:596-602
中文摘要	测定、分析毛乌素沙漠东南缘萨拉乌苏河流域米浪沟湾剖面MGS2层段的粒度与CaCO_3,发现该层段不同沉积相粒度Mz和sigma呈现峰谷变化,CaCO_3含量在沙丘砂及其上覆的河流相和湖沼相中依次变化于0-2.94%(平均值0.39%)、0.14%-2.68%(1.43%)和0.39%-15.57%(8.82%),并与Mz呈显著相关,构成与沉积旋回波动韵律相同的5.5个峰谷交替的粒度与CaCO_3旋回。研究表明,毛乌素沙漠冬季风盛行时期沙丘砂强烈堆积,CaCO_3发生迁移;夏季风盛行时期河流相和湖沼相发育,粉砂和粘土含量增加,CaCO_3相对聚集。这些旋回代表东亚冬夏季风千年尺度交替变化的气候旋回。
英文摘要	The MGS2 segment of the Milangguowan stratigraphical section in the Salawusu River Valley,southeast of Chinas Mu Us Desert,records 5.5 sedimentary cycles consisting of dune sands alternating with fluvial or lacustrine facieses.Based on the grain-size and CaCO_3 analysis,it was found that Mz and sigma appear peaks and valleys in different sedimentary facieses.CaCO_3 contents range from 0 to 2.94%(average 0.39%) in the dune sands,0.14% to 2.68%(average 1.43%) in the fluvial facieses and 0.39% to 15.57%(average 8.82%) in the lacustrine,and appear 5.5 grain-size and CaCO_3 cycles similar to the sedimentary facieses changes.And the CaCO_3 contents have a significant correlation with Mz.The result show that the dune sands accumulate and CaCO_3 moved greatly during the periods with a strong cold-dry winter monsoon.Whereas,the fluvial or lacustrine facieses developed,silt and clay increased and CaCO_3 gathered largely when the warm-humid summer monsoon strengthened.The observed climate fluctuations on millennium-scale during the Pleniglacial to the alternations attributed the strength of the East Asian winter and summer monsoons.
中文关键词	萨拉乌苏河流域 ; MGS2层段 ; 粒度 ; 千年尺度气候变化
英文关键词	CaCO_3 Salawusu River Valley MGS2 segment grain-size and CaCO_3 content millennium-scale climate variations
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4545027
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227835
作者单位	1.华南师范大学地理科学学院, 广州, 广东 510631, 中国; 2.华南师范大学地理科学学院, 黄土与第四纪地质国家重点实验室, 广州, 广东 510631, 中国; 3.广东省汕头市澄海中学, 汕头, 广东 515800, 中国; 4.东华理工大学地球科学学院, 南昌, 江西 330013, 中国; 5.中国科学院南海海洋研究所, 广州, 广东 510301, 中国
推荐引用方式 GB/T 7714	王丰年,李保生,王江龙,等. 萨拉乌苏河流域MGS2层段粒度与CaCO_3记录的千年尺度气候变化[J],2012,32(5):596-602.
APA	王丰年.,李保生.,王江龙.,牛东风.,温小浩.,...&杜恕环.(2012).萨拉乌苏河流域MGS2层段粒度与CaCO_3记录的千年尺度气候变化.地理科学,32(5),596-602.
MLA	王丰年,et al."萨拉乌苏河流域MGS2层段粒度与CaCO_3记录的千年尺度气候变化".地理科学 32.5(2012):596-602.