基于IHA-RVA法的黄河水文情势演变分析
Analysis of the Evolution of Hydrological Regime of the Yellow River by IHA-RVA Method
王保良 1王鸿翔 2张海涛 3郝春沣 3仇亚琴 3牛存稳3
作者信息
- 1. 华北水利水电大学,河南 郑州 450045;中国水利水电科学研究院,北京 100048
- 2. 华北水利水电大学,河南 郑州 450045
- 3. 中国水利水电科学研究院,北京 100048
- 折叠
摘要
水文情势的自然波动是维系河流生态系统功能性及水文健康的关键.针对气候变化和人类活动造成黄河流域水文情势变化等问题,选取黄河干流代表性水文站(兰州站、龙门站、花园口站)1956-2020 年逐日径流实测资料,采用Mann-Kendall和Pettitt检验方法,综合检验径流突变年份,利用生态水文指标变化范围法(IHA-RVA),定量评价黄河流域水文情势改变程度.结果表明:1)兰州站、龙门站、花园口站径流突变年份分别为 1984 年、1987 年、1986 年,且龙门站、花园口站控制流域内年均流量呈显著性减小趋势.2)兰州站年均 90d最小流量改变度最高,达 83%;龙门站 4 月平均流量改变度最高,达-100%;花园口站流量平均增大(减小)率改变度最高,达-92%.3)兰州站、龙门站、花园口站整体水文改变度分别为 34%、37%、51%,均属于中度改变.
Abstract
The natural fluctuation of hydrological regime is the key to maintaining the functionality and hydrological health of river ecosys-tems.Aiming at the change of hydrological regime in the Yellow River Basin caused by climate change and human activities,we selected dai-ly runoff data from Lanzhou,Longmen and Huanyuankou stations(1956-2020),the representative hydrological stations in the Yellow River Basin and used the Mann-Kendall and Pettitt test methods to comprehensively evaluate the hydrological regime in the Yellow River Basin.The Mann-Kendall and Pettitt tests were used to quantitatively evaluate the extent of hydrological changes in the Yellow River Basin by using the eco-hydrological index range of change(IHA-RVA)method.The results show that a)the abrupt changes in runoff at Lanzhou,Longmen and Huayuankou stations occurred in 1984,1987 and 1986 respectively,and that the average annual flow in the control basin at Longmen and Huayuankou stations showed a significant decrease.b)The variation of the minimum annual discharge in Lanzhou Station during 90 days is the highest,reaching 83%.The average discharge of Longmen Station in April is the highest,reaching-100%.The average increase(de-crease)rate of discharge at Huayuankou Station has the highest variation,reaching-92%.c)The overall hydrological alterations at Lanzhou,Longmen,and Huayuankou stations are 34%,37%and 51%respectively,which are all moderate.
关键词
Mann-Kendall检验/水文情势/IHA-RVA/水文改变度/黄河Key words
Mann-Kendall test/hydrological regime/IHA-RVA/degree of hydrological change/Yellow River引用本文复制引用
基金项目
国家自然科学基金(52009140)
国家自然科学基金(52279030)
国家重点研发计划(2021YFC3201105)
河南省高等学校重点科研项目(23ZX012)
出版年
2024
国家科技期刊平台
NSTL
万方数据