自然资源学报 ›› 2012, Vol. ›› Issue (5): 790-800.doi: 10.11849/zrzyxb.2012.05.008

• 资源生态 • 上一篇    下一篇

水文变异条件下的东江流域生态径流研究

张强1,2, 崔瑛1,2, 陈永勤3   

  1. 1. 中山大学 水资源与环境系, 广州 510275;
    2. 中山大学 华南地区水循环与水安全广东省普通高校重点实验室, 广州 510275;
    3. 香港中文大学 地理与资源管理系, 香港 沙田
  • 收稿日期:2010-09-02 修回日期:2011-11-15 出版日期:2012-05-20 发布日期:2012-05-20
  • 基金资助:
    国家自然科学基金(41071020,50839005);广东省科技厅对外合作项目(2010B050800001,2010B050300010);中山大学青年教师重点培育项目(2009-37000-1132381);香港特别行政区资助局项目(CUHK405308)。

Ecological Flow Evaluation Based on Hydrological Alterations in the Dongjiang River Basin

ZHANG Qiang1,2, CUI Ying1,2, CHEN Yongqin David3   

  1. 1. Department of Water Resources and Environment, Sun Yat-sen University, Guangzhou 510275, China;
    2. Key Laboratory of Water Cycle and Water Security in Southern China of Guangdong High Education Institute, Sun Yat-sen University, Guangzhou 510275, China;
    3. Department of Geography and Resource Management, Chinese University of Hong Kong, Hong Kong, China
  • Received:2010-09-02 Revised:2011-11-15 Online:2012-05-20 Published:2012-05-20

摘要: 东江流域的河川径流受气候变化和人类活动的双重影响产生了水文变异,河流生态系统适应了变异前的水文状态,变异后必然会给当地生态系统带来不同程度的影响。因此,论文运用多种检验方法并结合东江流域的实际情况对其水文变异做了系统的分析。在此基础上,采用逐月频率法计算该流域4水文站的生态径流量 (最小、适宜和最大生态径流),得出以下结论:①Tennant的检验表明论文的计算结果是合理的;②龙川、河源、岭下3站存在显著变异,变异后3站不满足河流适宜生态径流量的时间都出现在6月,今后应在该月适当增加调水。同时,可参照文中计算值,建立东江流域生态径流调度预警机制,为流域生态系统的健康和水资源的管理提供科学保障。

关键词: 生态径流, 水文变异, 逐月频率计算法, 东江流域

Abstract: Climate changes and human activities combine to cause hydrological alterations in Dongjiang River Basin. River ecosystems have adapted to the hydrological status before variation. After variation, the local ecosystem is bound to be affected more or less. In this case, M-K test, the scanning t test and the Rank Sum Test method, combined with the actual situation in Dongjiang basin are used to thoroughly analyze the abrupt streamflow behaviors. Then the ecological flow (minimum, optimal and maximum ecological flow) of four hydrological stations in Dongjiang River Basin is estimated by using the monthly frequency calculation technique. The research results indicate that: 1) The estimated ecological flow in this paper is reasonable when compared to those by Tennant method. 2) There are significant variations in Longchuan, Heyuan and Lingxia stations, after variations, the amount of annual streamflow does not meet the optimal ecological flow in June. So we should increase water diversion appropriately in this month in the near future. Besides, this study also provides a reference technical framework for establishing a ecological flow warning system in Dongjiang River Basin, and is also of scientific and practical merits in ecosystem health and basin scale water resource management.

Key words: ecological flow, hydrological alterations, monthly frequency calculation method, Dongjiang River Basin

中图分类号: 

  • TV121