地理学报 ›› 2011, Vol. 66 ›› Issue (1): 99-110.doi: 10.11821/xb201101010

• 水环境 • 上一篇    下一篇

考虑水文变异的黄河干流河道内生态需水研究

李剑锋, 张强, 陈晓宏, 江涛   

  1. 中山大学水资源与环境系;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
  • 收稿日期:2010-04-02 修回日期:2010-10-11 出版日期:2011-01-25 发布日期:2011-01-25
  • 通讯作者: 张强(1974-), 男, 山东沂水人, 博士, 教授, 博士生导师。E-mail: zhangq68@mail.sysu.edu.cn
  • 作者简介:李剑锋(1987-), 男, 硕士研究生, 主要从事生态水文、极端降水及旱涝灾害研究。E-mail: 30467165@qq.com
  • 基金资助:

    国家自然科学基金项目(41071020); 中山大学理工科青年教师重点培育计划项目(2009-37000-1132381); 广东省自然科学基金项目(4203384); 国家自然科学基金重点资助项目(50839005)

Study of Ecological Instream Flow in Yellow River,Considering the Hydrological Change

LI Jianfeng, ZHANG Qiang, CHEN Xiaohong, JIANG Tao   

  1. Department of Water Resources and Environment, Sun Yat-Sen University;Key Laboratory of Water Cycle and Water Security in Southern China of Guangdong High Education Institute, Sun Yat-Sen University, Guangzhou 510275, China
  • Received:2010-04-02 Revised:2010-10-11 Online:2011-01-25 Published:2011-01-25
  • Supported by:

    National Natural Science Foundation of China, No.41071020; Program for Outstanding Young Teachers of the Sun Yat-sen University, No.2009-37000-1132381; Guangdong Natural Science Foundation, No.4203384; Key Project for National Natural Science Foundation of China, No.50839005

摘要: 气候变化及人类活动导致水文变异,变异前后样本总体分布显著不同,即改变了当地生态系统的水文状况,打破生态平衡。本文使用滑动秩和检验(Mann-Whitney U检验) 分析水文变异,并对水文变异成因做了系统的分析。在此基础上,对变异前各月平均流量序列用线性矩法推求GEV分布参数,求出概率密度最大流量,并将其视为相应月河道内生态流量。本文用该法计算黄河干流7 站各月河道内生态流量,即得河道内生态需水情况。分析表明,考虑水文变异的河道内生态需水计算方法是可行的;水文变异后,黄河流域干流各水文站满足生态需水的频率大大降低,汛期降低幅度比非汛期大;黄河生态系统水环境恶化的主要原因是人类活动。

关键词: 河道内生态需水, 水文变异, Mann-Whitney U检验, 黄河

Abstract: Climate changes and human activities can lead to hydrological change. Distributions of the samples before and after hydrological change are significantly different. It means the local hydrological condition has changed, which breaks the ecological balance. We use moving rank sum test (Mann-Whitney U Test) to analyse hydrological changes and their causes. Then, L-moment is used to evaluate the parameters of generalized extreme value (GEV) distribution of the monthly flow series before hydrological change, and to calculate the maximum probability density flow, as the ecological instream flow. We use this method to calculate ecological instream flows of 7 hydrometric stations in the Yellow River Basin. The result shows that ecological calculating method which considers the hydrological change is practicable.

Key words: ecological instream flow, hydrological change, moving rank sum test, Mann-Whitney U Test, Yellow River