干旱区生态环境知识资源中心(Arid): 柴达木东缘山地千年祁连圆柏年轮定年分析

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	柴达木东缘山地千年祁连圆柏年轮定年分析
其他题名	Dating the 1000 year old Qilian Juniper in Mountains along the Eastern Margin of the Qaidam Basin
	邵雪梅; 方修琦; 刘洪缤; 黄磊
来源期刊	地理学报
ISSN	0375-5444
出版年	2003
卷号	58 期号:1 页码:90-100
中文摘要	针对中国干旱区生长的树木缺失轮和伪轮多等具体情况，及常规树轮定年方法应用于中国干旱地区时所遇到的问题，本文以柴达木盆地东缘山地生长的千年祁连圆柏树轮定年工作为例，详细探讨了在中国干旱地区建立树轮定年年表的方法体系及技术路线，对常规的工作方法提出新的改进。这包括：采样中要采集不同树龄、不同小生境且大复本量的样本；交叉定年工作要按一定的工作程序；安放缺失轮时要同时考虑窄轮和宽轮变化的一致性；用多种方法对定年和轮宽量测值进行检验等。这些方法的具体应用有助于在中国干旱地区建立定年准确、千年尺度的树轮年表
英文摘要	In this paper,the methods for developing the master chronologies for 1000 year old Qilian juniper(Sabina przewalskii Kom)are introouduced in detail.Since the studied sites are located in the arid region of northeast Qinghai Xizang Plateau,the rering cores sampled contain a certain number of missing rings and several false rings.To assure the proper placement in time of each growth layer for the 1000yera old trees,some improvements were made in the practice of master chronologic development,Firstly,trees with a variety of ages were sampled besides very old trees.The large sample depth benefited the identification of missing rings for cores from old trees and avoided the possibility that all collected specimens could be missing a ring for any one year.Secondly,cores from younger trees and from trees that exhibit a little width variation were selected to do the skeleton plot first and cores with many missing rings were done last when the ring width pattern was known.Thirdly,inferring where rings as well as among the wide rings.If the agreement of wide rings is not so good and there were some missing rings,the chronology from nearby sites was used to infer the year of missing ring occurrence.Finally,several methods,such as the computer progra COFECHA and the line plots were used to examine the dating and the measurements of ring width for a site.The number of cores without missing rings and time span covered by them were also inspected to avoid the possibility that all collected specimens were added a missing ring for any one year.The Gleichlaufigkeit statistics was used to examine the dating agreement between master chronologies of different sites.
中文关键词	树木年代学 ; 树轮年表 ; 交叉定年 ; 千年祁连圆柏 ; 气候变化 ; 柴达木盆地
英文关键词	the Qaidam Basin dendrochronology ring width pattern tree ring chronology
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:1350054
来源机构	中国科学院地理科学与资源研究所 ; 北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203898
作者单位	邵雪梅, 中国科学院地理科学与资源研究所, 北京 100101, 中国.; 黄磊, 中国科学院地理科学与资源研究所, 北京 100101, 中国.; 方修琦, 北京师范大学资源与环境科学系, 北京 100875, 中国.; 刘洪缤, 国家气候中心, 北京 100081, 中国.
推荐引用方式 GB/T 7714	邵雪梅,方修琦,刘洪缤,等. 柴达木东缘山地千年祁连圆柏年轮定年分析[J]. 中国科学院地理科学与资源研究所, 北京师范大学,2003,58(1):90-100.
APA	邵雪梅,方修琦,刘洪缤,&黄磊.(2003).柴达木东缘山地千年祁连圆柏年轮定年分析.地理学报,58(1),90-100.
MLA	邵雪梅,et al."柴达木东缘山地千年祁连圆柏年轮定年分析".地理学报 58.1(2003):90-100.