利用树轮宽度重建近280a来祁连山东部地区的春季降水

冰川冻土 ›› 2001, Vol. 23 ›› Issue (3): 302-296.

利用树轮宽度重建近280a来祁连山东部地区的春季降水

勾晓华¹, 陈发虎¹, 王亚军¹, 邵雪梅²

1. 兰州大学西部环境教育部重点实验室和资源环境学院, 甘肃, 兰州, 730000;
2. 中国科学院地理科学与资源研究所, 北京, 100101

收稿日期:2000-07-17 修回日期:2001-04-28 出版日期:2001-08-25 发布日期:2012-04-26
基金资助:
国家重点基础研究发展规划项目(G2000048701);国家自然科学基金项目(49731010;49871072)资助

Spring Precipitation Reconstructed in the East of the Qilian Mountain During the Last 280 a by Tree Ring Width

GOU Xiao-hua¹, CHEN Fa-hu¹, WANG Ya-jun¹, SHAO Xue-mei ²

1. National Laboratory of Western Chinas Environmental Systems, MOE, Lanzhou University, and Resource and Environmental College of Lanzhou University, Lanzhou Gansu 730000, China;
2. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

Received:2000-07-17 Revised:2001-04-28 Online:2001-08-25 Published:2012-04-26

摘要/Abstract

摘要： 利用采自祁连山东部的祁连圆柏样芯样本,建立标准化年表,并将标准年表的树轮指数与附近的乌鞘岭气象站的温度和降水进行相关分析.结果表明,年轮指数与3～4月降水呈显著正相关,相关系数为0.2.利用标准化年表与3～4月降水的线性回归方程重建了研究区近280a来的3～4月降水,统计检验表明重建结果是可靠的.

关键词: 祁连山, 树木年轮, 降水重建

Abstract: Dendrochronology is studying how to reconstruct the past global change. In virtue of the tree ring easy to be dated, the width of the tree ring able to be measured precisely and closely relating to climate change, the trees dispersing widely and easy to be sample, using tree ring data to reconstruct climate change is developing very quickly in the word. With the consummation of the dendrochronology theory and the development of the analysis method, there are thousands of tree ring chronologies were build in the world, many of which were used to reconstruct the past climate change. Until now the tree ring width and density data not only were used to reconstruct the long period but also the large space scale climate change. The tree ring width standard chronology for the Sabina przewalskii of the east of the Qilian Mountains was build. The relationship between the tree ring index of the standard chronology and the meteorology data of the nearest meteorology station was worked out. It is found that the tree ring index closely relates to the March-April precipitation, with a correlative coefficient of 0.525. The linear regression function was used to reconstruct the March-April precipitation of the researched area. Statistics indicates that the reconstruction is dependable. Although the close relationship between the March-April precipitation and the annual precipitation was not understand very well, it is believed that the March-April precipitation is able to represent annual humidity. Thus, the reconstruction is meaningful.

Key words: Qilian Mountains, tree-ring, precipitation reconstruction

中图分类号:

P467

勾晓华, 陈发虎, 王亚军, 邵雪梅. 利用树轮宽度重建近280a来祁连山东部地区的春季降水[J]. 冰川冻土, 2001, 23(3): 302-296.

GOU Xiao-hua, CHEN Fa-hu, WANG Ya-jun, SHAO Xue-mei . Spring Precipitation Reconstructed in the East of the Qilian Mountain During the Last 280 a by Tree Ring Width[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2001, 23(3): 302-296.

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