地理科学进展 ›› 2008, Vol. 27 ›› Issue (4): 7-14.doi: 10.11820/dlkxjz.2008.04.002

• 水系统模拟研究专栏 • 上一篇    下一篇

潮白河源区生态流量的谱系及其变化

戴向前1,3, 郑红星1, 刘昌明1,2, 朱芮芮1,3   

  1. 科学院地理科学与资源研究所,北京100101;
    2. 北京师范大学水科学研究院,北京100875;
    3. 中国科学院研究生院,北京100039
  • 收稿日期:2008-02-01 修回日期:2008-06-01 出版日期:2008-07-25 发布日期:2008-07-25
  • 通讯作者: 郑红星(1973- ),男,博士,副研究员,主要从事水文水资源、生态水文等方面研究.E- mail: zhenghx@igsnrr.ac.cn E-mail:zhenghx@igsnrr.ac.cn
  • 作者简介:戴向前(1977- ),男,博士生,主要从事水文水资源、生态需水等方面的研究.
  • 基金资助:

    国家自然科学基金项目(40601015);中国科学院重点项目(KZCX2- YW- 126)

Ecological Flow Spectrum and Its Change in the Headwater s of Chaobaihe River

DAI Xiangqian1,3, ZHENG Hongxing1, LIU Changming1,2, ZHU Ruirui1,3   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
    2. College of Water Sciences, Beijing Normal University, Beijing 100875, China;
    3. Graduate University of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2008-02-01 Revised:2008-06-01 Online:2008-07-25 Published:2008-07-25

摘要:

为保护和恢复河流生态系统健康,本文通过河流不同流量形态的生态意义的分析,探讨了生态流量的内涵 及其谱系结构,将生态流量谱系划分为极低流量、低流量、高脉冲流量、高流量、极高流量五种流量形态。以潮白河 源区为研究区域,利用大阁水文站1956~2003 年48 年的实测日流量资料,对参照期(1956~1974 年)和影响期 (1975~2003 年)的生态流量谱系特征进行分析,结果表明,影响期较参照期多年平均极低流量、低流量、高流量分别 减少了31%、4%、9%,极高流量消失,高脉冲流量则增加了5%,若以参照期生态系统的状况为生态保护和恢复的目 标,就生态流量而言,潮白河源区须通过合理的水量调控应重点增加极低流量的大小。

关键词: 潮白河源区, 流量形态, 生态流量, 生态流量谱系

Abstract:

To protect and rehabilitate health of riverine ecosystem in Chaobaihe River, this paper investigated the ecological implication of the streamflow regime and proposed the concept of ecological flow. The spectrum of the ecological flow includes extreme low flow, low flow, high pulse, high flow and extreme high flow in consistent with those proposed by IHA (Indicators of Hydrologic Alteration). For the case study in the headwaters of Chaobaihe River using daily streamflow data from 1956 to 2003 of Dage Hydrological Station, because of the significant changes of hydrologic cycle, the period from 1956 to 1974 was named reference period, while 1975 to 2003 was named as influenced period. The results showed that the ecological flow spectrum of the influenced period was quite different from that of reference period. The average value of extreme low flow, low flow, high pulse, high flow and extreme high flow are respectively 1.09, 2.43, 6.5, 14.95 and 25 m3/s in reference stage, while the influenced period extreme low flow, low flow and high flow drop respectively by 31%, 4% and 9%, and the extreme high flow disappears but the high pulse was increased by 5%. From the point of view of ecological flow, if the ecological situation in reference period is acceptable for ecological restoration, it is important to increase the quantity of extreme low flow in the headwaters of Chaobaihe River.

Key words: ecological flow, headwaters of Chaobaihe River, spectrum, streamflow regime