干旱区生态环境知识资源中心(Arid): 新疆罗布泊地区近160年来红卯沙包沉积纹层delta~(13)C与气候重建

Arid

	新疆罗布泊地区近160年来红卯沙包沉积纹层delta~(13)C与气候重建
其他题名	THE delta~(13)C SEQUENCE OF Tamarix CONE SEDIMENTARY VEINS AiND CLIMATE RECONSTRUCTION DURING LAST 160 YEARS IN LOP NUR REGION,XINJIANG,CHINA
	赵元杰 1; 王晓毅 1; 夏训诚 2; 李雪峰 1
来源期刊	第四纪研究
ISSN	1001-7410
出版年	2011
卷号	31 期号:1 页码:130-136
中文摘要	红柳沙包具有准确的计年和很强的环境信息储存功能,可以用来恢复数百年来的气候和环境变化.研究发现,罗布泊红柳沙包沉积纹层红柳落叶delta~(13)C序列高频变化受多个气候要素的综合影响,重建的罗布泊地区1839年以来的年平均气温、8 ~10月空气平均相对湿度及4~5月平均风速,较好地反映了该地区168年来的气候变化.对红柳落叶delta~(13)C高频变化序列的功率谱分析发现,8’3C序列含有显著的42.Oa,10.5a,8.4a,4~Oa,3.7a和2.9a等准变化周期,其中,准10.5a周期与太阳黑予约II.Oa的活动周期基本一致
英文摘要	Tamarix cone is one kind of vegetation cones formed by shrubs with Tamarix and other plant species, many of which exist in the region in and around Takli:rnakan Desert. Most Tamarix cones range in height from 3m to 15m and in length from 5m to 50m(long axis).It is also discovered by investigation that in the region of Lop Nur there ard many Tamarix cones with clear layers composed of sand and dead trigs and leaves of Tamarix. Th ose have are functions of exact dating and strong envirionmental information storage,by which the change of climate and environment could be reconstructed for rece:nt hundreds of years. At the site of 39.580N,89.780E,we ta.ke 168 samples in a top part of Tamarix cone from ;the top layer to the low according to every layers. The age continuity of sedimentary veins is determinedby 2IOPbex o:f sand materials in sedimentary veins, the sample age is from I839 to 2006.The Tamarix twigs and leaves are used in carbon isotope test. Research results show that the high-frequency change of delta~(13)C sequence in Tamarix cone sedimentary veins in Lop Nur region is impacted by some climate elements jointly: The reconstructed climate elements such as mean relative humidity from Aug.to Oct., wind speed from Apr.to May, and the mean annual temperature since 18391 refipect preferably the historical.climate variation during the past 168 years in Lop Nur region. The warmer climate peripods include 1849 ~1865A.D.,1891 ~1936A.Dt,1987 ~2006A.D., the cooler ones include 1839 ~1848A.D.,1866~ 1890A.D.,1937 ~1986A.D.The relative air humidity shows the slow upward trend before 1930A.D., since e:ftrly 2-th century it was high, later it began to decline, during the time from the 30’s to the late 60’s of 20th century it has decreased obviously, and since the 70’s of 20th century it has been increasing gradually. The climate change has thd features of alternative change between the cool-dry and the warm-humid pattems. Analysis of power spectrum indicates that the quasi-periodic oscillations of 42.0a,10.Sa,8.4a,4.0a,3.4a and 2.9a are involved in the high-frequency information series. Th’e quasi-periodic of 10.5a reflects the active cycle of sunspot around 11.0 years
中文关键词	红柳沙包 ; delta~(13)C气候变化 ; 罗布泊
英文关键词	Tamarix cone delta~(13)C climate chan ge Lop Nur
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PALEONTOLOGY
WOS研究方向	Paleontology
CSCD记录号	CSCD:4116565
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226340
作者单位	1.河北师范大学资源与环境科学学院, 河北省环境演变与生态建设实验室, 石家庄, 河北 050016, 中国; 2.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	赵元杰,王晓毅,夏训诚,等. 新疆罗布泊地区近160年来红卯沙包沉积纹层delta~(13)C与气候重建[J]. 中国科学院新疆生态与地理研究所,2011,31(1):130-136.
APA	赵元杰,王晓毅,夏训诚,&李雪峰.(2011).新疆罗布泊地区近160年来红卯沙包沉积纹层delta~(13)C与气候重建.第四纪研究,31(1),130-136.
MLA	赵元杰,et al."新疆罗布泊地区近160年来红卯沙包沉积纹层delta~(13)C与气候重建".第四纪研究 31.1(2011):130-136.