摘要
为定量评估三峡水库蓄水后洞庭湖水文情势改变程度,选取洞庭湖出口控制水文站——城陵矶1959~2013年逐日水位数据,采用Mann-Kendall法、累积距平法检验及滑动T检验法分析了洞庭湖水系水文特征与变化趋势,并应用水文指标变动范围法(IHA-RVA)及水文改变度法综合评价了三峡水库蓄水后城陵矶水文站水文情势改变程度。结果表明,城陵矶站年均水位呈显著增长趋势,突变年份出现在2003年;城陵矶水文站整体水文改变度为56%,达到中度改变,其中基流指数受影响最大。
To quantitatively assess the hydrological regime alternation of Dongting Lake after Three Gorges Reservoir impoundment,the change characteristics and trend of the hydrological regime were evaluated by using the Mann-Kendall statistical test,the cumulative anomaly and the slide T detected method based on the daily water level data at the Chenglingji gauge station from 1959 to 2013.And then the degree of alteration of the hydrologic regime of the Three Gorges reservoir on the variation of the hydrological indices were analyzed by the range of variability approach and the hydrologic regime alteration degree method.The results show that the average annual water level of Chenglingji station has shown an obvious increasing trend.The abrupt change occurred in the year 2003.The overall degree of hydrological alteration is 56%,belonging to moderate alternation,and the index alternation of the basic flow is the most.
作者
王鸿翔
查胡飞
李越
郭文献
张爱民
WANG Hong-xiang;ZHA Hu-fei;LI Yue;GUO Wen-xian;ZHANG Ai-min(School of Water Conservancy,North China University of Water Resources and Electrie Power,Zhengzhou 450045,China)
出处
《水电能源科学》
北大核心
2018年第10期31-33,48,共4页
Water Resources and Power
基金
国家自然科学基金项目(51679090
51609085
51779094)
2016年度河南省高校科技创新人才支持计划(16HASTIT024)
2016年河南省科技攻关项目(162102110015)
2015年度河南省基础与前沿技术研究计划(152300410113)
湖南水利重大科技项目(湘水科计[2015]186-11)
关键词
洞庭湖
水文情势
水位
三峡水库
Dongting Lake
hydrological regime
water level
Three Gorges Reservoir
