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	祁连山中部公元904年以来树木年轮记录的旱涝变化
其他题名	A Record of Drought and Flood Series by Tree-Ring Data in the Middle Section of Qilian Mountain Since 904 A. D.
	康兴成; 程国栋; 陈发虎; 勾晓华
发表日期	2003
ISSN	1000-0240
卷号	25 期号:5 页码:518-525
中文摘要	利用取自祁连山中部地区的树木年轮样本和该地区3个站点的降水资源，应用年轮气候学方法，重建了祁连山中部地区的降水量。自公元904年以来，该地区历经了31次相对干期和30次相对湿润期，其中，连续两个10 a以上的干期有17次，湿润期12次，最长的干期是1540－1590年间，长达60 a，最长的湿润期是1240－1270年、1860－1890年，各有40 a。世纪尺度范围内，16世纪是最干的100 a，有80 a为少雨年；最湿润的是13世纪和19世纪，这期间有60 a为多雨。自公元904年以来，降水量共发生了35次突变，16次是由旱向涝的突变，19次是由涝向旱的突变。平均约30 a发生一次。11世纪是该地区降水的多变时期，15～16世纪是降水的相对稳定时段，20世纪又进入了降水的多变时期。
英文摘要	The standardized (STD) chronology was established from tree-ring data of Sabina Przewal-skii in the middle part of the Qilian Mountains. The correlation was analyzed between the tree-ring index and the precipitation in weather stations, near which the tree ring is sampled. The results showed that there were 31 dry spells and 30 wet spells in the past 1 100 years, of which 1540- 1590 A. D. was the longest dry period, lasting 6o years, and 1240-1270 A. D. and 1860-1890 A. D. were the longest wet periods, lasting 40 years respectively. There were 17 durations of dry peri-od over 10 years, and 12 durations of wet period o-ver 10 years. With regard to the century time scale, the 16th Century was 100 years of drought, with 80 years being lack of rain. The 13 th Centu-ry, as well as the 19th Century, was 100 years of wet, with 60 years in spate. At the same time, an-other characteristic of precipitation variation in these mountains is more abrupt change. There have had 35 abrupt changes since 904 A. D. , about 30 years on the average. There were 16 shifts from drought to wet, and 19 shifts from wet to drought. There were 9 abrupt changes in the 11th Century, 2 abrupt changes in the 15th and 16th Centuries. In the 20th Century there were 3 abrupt changes. Precipitation in these mountains fre-quently changed in the 11th Century, and less changed in the 15th and 16th Centuries. In the 20th Century precipitation changed frequently.
关键词	树木年轮降水量旱涝祁连山
英文关键词	tree-ring;precipitation;drought and flood;Qilian Mountains
语种	中文
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
CSCD记录号	CSCD:1168226
来源期刊	冰川冻土
来源机构	中国科学院寒区旱区环境与工程研究所 ; 兰州大学 ; 中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/1860
推荐引用方式 GB/T 7714	康兴成,程国栋,陈发虎,等. 祁连山中部公元904年以来树木年轮记录的旱涝变化[J]. 中国科学院寒区旱区环境与工程研究所, 兰州大学, 中国科学院青藏高原研究所,2003,25(5):518-525.
APA	康兴成,程国栋,陈发虎,&勾晓华.(2003).祁连山中部公元904年以来树木年轮记录的旱涝变化.冰川冻土,25(5),518-525.
MLA	康兴成,et al."祁连山中部公元904年以来树木年轮记录的旱涝变化".冰川冻土 25.5(2003):518-525.