利用树轮资料重建通天河流域518年径流量
收稿日期: 2003-07-24
修回日期: 2003-11-04
网络出版日期: 2004-07-25
基金资助
科技部社会公益研究项目 (2001DIB10085);中国科学院知识创新工程项目 (KZCX1-SW-04; KZCXZ-314)
A 518-year Runoff Reconstruction of Tongtian River Basin Using Tree-ring Width Chronologies
Received date: 2003-07-24
Revised date: 2003-11-04
Online published: 2004-07-25
Supported by
The soCial benefits program of the Ministry of Science and Technology, No.2001DIB10085; Knowledge Innovation Project of CAS, No.KZCX1-SW-04; No.KZCXZ-314
秦宁生,靳立亚,时兴合,汪青春,李林,陈芳,李丽梅 . 利用树轮资料重建通天河流域518年径流量[J]. 地理学报, 2004 , 59(4) : 550 -556 . DOI: 10.11821/xb200404008
Using the tree-ring width chronologies in Qumalai and Zhiduo, this study investigated the relationships between tree growth and annual runoff of Tongtian River, and reconstructed the runoff series since 1485 AD at Zhimenda hydrologic station, which is loCated on Tongtian River Basin in the source region of the Yangtze River. The variation of reconstructed runoff series was also analyzed. The results showed that the distinct high-flow period of annual runoff in Zhimenda hydrologic station oCcurred in the first 50 years of the 19th century, and the low-flow one oCcurred in the latter half of the 17th century. There are 96 years with extremely high annual runoff, and 117 years with above-average annual runoff. Moreover, the numbers of extremely low runoff years and below-average runoff years are 86 and 81, respectively. There are 138 years with normal annual runoff. The significant cycles of 43, 37, 32, 5, and 2 years exist in the reconstructed runoff series.
Key words： source region of Yangtze River; Tongtian River; tree ring; runoff; reconstruction
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