首页|考虑水文变异的东江流域河道内生态流量研究

考虑水文变异的东江流域河道内生态流量研究

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
基于变化环境下河流水文情势发生变异的特殊性,应用滑动秩和检验法系统分析东江水文变异及其变异成因,确定变异前各月平均流量序列最适概率分布函数,将概率密度最大的月平均流量定义为河道内生态流量.分析表明,考虑水文变异的生态流量计算方法是合理可行的.水文变异后,东江流域干流满足生态需水的频率大大提高,满足频率从变异前的60％左右提高到变异后的73％以上(6月除外),非汛期提高幅度比汛期大.所得成果可为河道水文生态变化的研究提供参考.
Study on eco-flow in river channel of Dongjiang River Basin under consideration of hydrological variation
Based on the particularity of the variation from the hydrogical regime of the river under the changed environment,the hydrological variation of Dongjiang River and its causation are systematically analyzed with the moving rank-sum testing method,while the most adaptable probability distribution function of the mean monthly flow series of all the months before the variation is determined,and then the mean monthly flow with the maximum probability density is defined as the eco-flow in the river channel.The analysis shows that the method for the calculation of the eco-flow under the consideration of the hydrological variation is feasible and reasonable.After the hydrological variation,the frequency that the the eco-water demand is satisfied by the main stream of Dongjiang River Basin is largely enhanced,i.e.the satisfying frequency is enhanced from about 60％ before the variation to above 73％ after the variation (except June),moreover,the enhancing amplitude of the non-flood season is larger than that of the flood season.The result obtained herein can provide a reference for the study on the change of the river hydro-ecology.

eco-water demandhydrological variationMann-Whitney U TestDongjiang River Basin

肖才荣、胡徵雨、陈成豪、纪义彤、李瑞娴、叶长青

展开 >

海南大学环境与植物保护学院,海南海口570228

海南省水文水资源勘测局,海南海口570203

河道内生态需水 水文变异 Mann-Whitney U检验 东江流域

国家自然科学基金国家自然科学基金国家自然科学基金海南省自然科学基金水利部公益性行业科研专项经费项目2013年中西部高校提升综合实力工作资金“大学生创新创业训练计划基金”海南省中西部高校提升综合实力工作资金项目海南省中西部高校提升综合实力工作资金项目海南大学中西部计划海岛生态系统管理研究项目海南大学科研启动基金

512100135147921651569009414192201401048ZXBJH-XK004ZXBJH-XK005ZXBJH-XK006kyqd1417

2016

10.13928/j.cnki.wrahe.2016.10.014

水利水电技术(中英文)
水利部发展研究中心

水利水电技术(中英文)

CSTPCDCSCD北大核心
影响因子：0.456
ISSN：1000-0860
年,卷(期)：2016.47(10)
  • 5
  • 10