地理学报 ›› 2004, Vol. 59 ›› Issue (4): 550-556.doi: 10.11821/xb200404008

• 环境变迁 • 上一篇    下一篇

利用树轮资料重建通天河流域518年径流量

秦宁生1, 靳立亚2, 时兴合3, 汪青春1, 李林1, 陈芳1, 李丽梅1   

  1. 1. 青海省气候资料中心,西宁810001;
    2. 兰州大学资源环境学院,兰州 730000;
    3. 青海省气象台,西宁810001
  • 收稿日期:2003-07-24 修回日期:2003-11-04 出版日期:2004-07-25 发布日期:2010-09-09
  • 作者简介:秦宁生 (1962-), 男, 河南商丘人, 副研究员, 主要从事青藏高原气候研究。E-mail:wldnqin@public.xn.qh.cn
  • 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

QIN Ningsheng1, JIN Liya2, SHI Xinghe3, WANG Qingchun1, LI Lin1, CHEN Fang1, LI Limei1   

  1. 1. Qinghai Climate Data Center, Xining 810001, China;
    2. Resources and Environment Institute of Lanzhou University, Lanzhou 730000, China;
    3. Qinghai Meteorological Abservatory, Xining 810001, China
  • Received:2003-07-24 Revised:2003-11-04 Online:2004-07-25 Published:2010-09-09
  • 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

摘要:

利用长江源区曲麻莱、治多的树木年轮宽度资料,通过分析树木生长与流量变化的关系,重建了长江源区通天河流域直门达水文站1485年以来年径流量的变化,并进行了变化特征分析。结果表明:在重建的518年中,直门达水文站年径流量最显著的丰水期发生在19世纪前半叶,最显著的枯水期发生在17世纪的后半叶。特丰水年有96年,偏丰水年有117年,特枯水年有86年,偏枯水年有81年,正常水年有138年。重建序列存在43年、37年、32年、5年和2年左右的显著周期。

关键词: 长江源, 通天河, 树木年轮, 径流量, 重建

Abstract:

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