干旱区生态环境知识资源中心(Arid): 新疆巴里坤湖全新世湖泊沉积物中Zr /Rb比值特征及其环境意义

Arid

	新疆巴里坤湖全新世湖泊沉积物中Zr /Rb比值特征及其环境意义
其他题名	Variation of Zr /Rb ratios from the Holocene Lacustrine sediments in Balikun Lake in Xinjiang and its environmental implications
	谭玲玲; 钟巍; 薛积彬; 魏志强; 陈永强
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2015
卷号	29 期号:11 页码:109-114
中文摘要	Zr /Rb比值因不受后期成壤作用影响,在干旱- 半干旱地区的湖泊沉积物中可指示风力搬运的强弱变化,在一定程度上反映了区域风沙活动历史。选取西风区巴里坤湖为研究区域,对BLK - 1剖面沉积物的Zr、Rb元素及其比值进行分析,并在区域气候变化历史的基础上,结合巴里坤湖沉积物45 - 170mum粒度组分、流域风化指数展开讨论。据此重建了9000cal. a BP以来新疆巴里坤湖地区的风尘活动历史: 9000 - 7300cal. a BP、5900 - 3100cal. a BP、1100 - 0cal. a BP,三个阶段Zr /Rb比值高,风沙活动频繁。7300 - 5900cal. a BP,3100 - 1100cal. a BP两个时期,Zr /Rb比值相对低,风沙活动减弱,但在2000 - 1500cal. a BP期间Zr /Rb比值出现峰值,经研究认为这可能是由于人类活动增强而导致的侵蚀加剧所致。研究表明Zr /Rb比值反映的风沙活动历史与古里雅冰芯微粒浓度、敦德冰芯微粒含量所反映的区域风沙活动具有良好的对应,因此,认为干旱区湖泊沉积物的Zr /Rb比值对于反映区域风尘活动历史具有良好的应用潜力和前景。
英文摘要	Zr /Rb ratio from lacustrine sediment can indicate the strength of change of aeolian transport in arid and semi - arid regions,because the post - depostional weathering and pedogenesis does not modify the Zr /Rb ratio due to the immobility of Zr and Rb element. To some extent,Zr /Rb ratio can reflect the history of regional aeolian activity. We selected westerly - influenced Balikun Lake as research region to analyze the Zr and Rb element and Zr /Rb ratio from sediment in BLK - 1 profile. Based on the history of regional climate change,the study combined the (45 - 170mum) grain - size sensitive component from sediment in Bulikun Lake and catchment weathering intensity (CWI) to rebuild the history of aeolian activity in Bulikun Lake region of Xinjiang in the past 9000 years. The research suggests: in 9000 ~ 7300 cal. a BP,5900 ~ 3100 cal. a BP,1100 ~ 0 cal. a BP,the fluctuation of Zr /Rb ratio was relatively high and it indicated the big strength of change of aeolian transport and the frequency of aeolian activity during these periods; the aeolian activity weaken during 7300 ~ 5900 cal. a BP and 3100 ~ 1100 cal. a BP; but in the period from 2000 cal. a BP to 1500 cal. a BP,the Zr /Rb ratio increased sharply and reached the climax,showing the strengthened human activity. The research suggests that the history of Aeolian activity that the Zr /Rb ratio reflected was better correspond to that the Guliya ice core and the particle content of the Dunde ice core reflected,so it showed the Zr /Rb ration from lacustrine sediments in arid region has better application potential and prospect to reflect the history of regional aeolian activity from.
中文关键词	风尘活动 ; 巴里坤湖 ; 全新世
英文关键词	Zr /Rb Zr /Rb ratios dust event Barkol Lake Holocene
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:5573473
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232813
作者单位	谭玲玲, 华南师范大学地理科学学院, 广州, 广东 510631, 中国.; 薛积彬, 华南师范大学地理科学学院, 广州, 广东 510631, 中国.; 魏志强, 华南师范大学地理科学学院, 广州, 广东 510631, 中国.; 陈永强, 华南师范大学地理科学学院, 广州, 广东 510631, 中国.; 钟巍, 华南师范大学地理科学学院, 绿洲生态教育部重点实验室;;西部环境教育部重点实验室, 广州, 广东 510631, 中国.
推荐引用方式 GB/T 7714	谭玲玲,钟巍,薛积彬,等. 新疆巴里坤湖全新世湖泊沉积物中Zr /Rb比值特征及其环境意义[J],2015,29(11):109-114.
APA	谭玲玲,钟巍,薛积彬,魏志强,&陈永强.(2015).新疆巴里坤湖全新世湖泊沉积物中Zr /Rb比值特征及其环境意义.干旱区资源与环境,29(11),109-114.
MLA	谭玲玲,et al."新疆巴里坤湖全新世湖泊沉积物中Zr /Rb比值特征及其环境意义".干旱区资源与环境 29.11(2015):109-114.