X img

官方微信

img

群号:冰川冻土交流群

QQ群:218834310

高级检索
作者投稿 专家审稿 编辑办公 编委办公 主编办公

冰川冻土 ›› 2006, Vol. 28 ›› Issue (4): 526-529.

• 冰冻圈与全球变化 • 上一篇    下一篇

长江源区径流年内分配时程变化规律分析

燕华云1, 杨贵林1, 汪青春2   

  1. 1. 青海省, 水文水资源勘测局, 青海, 西宁, 810001;
    2. 青海省, 气候资料中心, 青海, 西宁, 810001
  • 收稿日期:2005-11-21 修回日期:2006-01-10 出版日期:2006-08-25 发布日期:2012-04-26
  • 基金资助:
    国家自然科学基金项目(40465002);青海省科学技术厅项目(2005-N-519)资助

Change of Annual Runoff Distribution in the Headwaters of the Yangtze River

YAN Hua-yun1, YANG Gui-lin1, WANG Qing-chun2   

  1. 1. Qinghai Hydrology and Water Resources Survey Bureau, Xining Qinghai 810001, China;
    2. Climate Center of Qinghai Meteorological Bureau, Xining Qinghai 810001, China
  • Received:2005-11-21 Revised:2006-01-10 Online:2006-08-25 Published:2012-04-26

摘要: 在气候变化和人类活动的影响下,河川径流的年内分配特征也发生变化,直接影响人类开发利用和生态环境建设.根据长江源区1956-2000年河流月径流资料,分析了年内分配不均匀系数、完全调节系数、集中度、集中期、变化幅度等特性.结果表明:长江源径流年内分配特征在1960年前后与1988年前后径流年内分配较为相近,1970—1976年与1993年以后径流年内分配较为相近.沱沱河站径流年内分配的不均匀性、集中度以及相对变化幅度都高于直门达站.

关键词: 长江源区, 径流, 年内分配

Abstract: With the impact of climate change and increasing the intensity of human activities,the hydrological regime has changed,including annual runoff distribution,which is relating with water resources management and ecological construction.In this paper,the index of unevenness,concentration,and variation have been defined and calculated according to gauge records of runoff in the 1956-2000.Then the change of annual runoff distribution in the headwaters of the Yangtze River is discussed.It is revealed that: 1) the annual runoff distribution in the 1960s was quite similar to that in the 1988s,while in 1970-1976 it was almost the same to that after 1993.2) In the Tuotuohe Station,which locates at the upper reaches,the unevenness,concentration rate,relative variation rate and absolute variation rate are higher than that in the Zhimenda Station.

Key words: headwaters of the Yangtze River, runoff, annual distribution

中图分类号: 

  • P343