地理科学进展 ›› 2005, Vol. 24 ›› Issue (1): 87-96.doi: 10.11820/dlkxjz.2005.01.010

• 土地利用与水文 • 上一篇    下一篇

新疆阿克苏河流域年径流时序特征分析

蒋 艳, 周成虎, 程维明   

  1. 中国科学院地理科学与资源研究所,北京100101
  • 收稿日期:2004-06-01 修回日期:2004-11-01 出版日期:2005-01-25 发布日期:2005-01-25
  • 作者简介:蒋艳(1974-),女,江苏盐城人,博士生,主要从事地理信息系统和水文水资源方面的研究。 E-mail: jiangy@lreis.ac.cn
  • 基金资助:

    国家自然科学杰出青年基金 "空间数据挖掘与知识发现"(40225004);世行合作项目 "新疆塔里木河流域水量调度管理决策支持系统"(THSD-7)。

Analysis on the Characteristics of Runoff Time Series in Akesu Basin

JIANG Yan, ZHOU Chenghu, CHENG Weiming   

  1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101
  • Received:2004-06-01 Revised:2004-11-01 Online:2005-01-25 Published:2005-01-25

摘要:

阿克苏河是塔里木河的主要支流,依据阿克苏河流域内5个代表站的40余年年径流实测资料,选取多种径流统计参数,分析流域范围内不同径流补给来源的径流年内分配规律和多年变化特征。结果表明:阿克苏河流域径流补给具有垂直地带性和多样化特点,径流时序特征与径流的补给来源有密切关系;径流年内分配极不均匀,集中程度高;而径流的多年变化变差系数小,丰、枯频率密度近似正态分布,无特大丰水年和枯水年,径流量多年变化趋势比较稳定。

关键词: 阿克苏, 径流补给来源, 径流时序特征, 年径流

Abstract:

Akesu River is one of the largest rivers in northwest of China. It is the main tributary of Tarim River, whose upper branches are in the territory of Kirghizstan. Akesu basin lies in arid and semi-arid region of China, and it has typical hydrographical characteristics of inland rivers in northwest of China. Using forty years' annual discharge at five representative gauging stations in Akesu basin, this paper presents several runoff statistical parameters, namely variation coefficient, concentration ratio, concentration period, kurtosis, wet-dry transformation ratio, and the curve of difference accumulation and probability density. It is the fundamental purpose of this paper to analyze annual distribution and change of discharge from year to year with different runoff-supplying sources in Akesu basin. The result shows that the runoff-supplying sources in Akesu basin have vertical zonality and diversification .The characteristics of annual discharge in Akesu Basin have close relations with runoff-supplying sources. The allocation of discharge is extremely uneven, and has a quite high concentration within one year. On the other hand, for many years, variation coefficients of annual discharge have much lower value than other rivers in south of China. The high and low flow years alternate in these years, and the probability distribution approximates to normal distribution. There are not enormously wet and dry years, and the tendency of annual discharge change is relatively steady.

Key words: Akesu basin, annual discharge, runoff-supplying sources, time series analysis