LIU Qiang,CAI Xueya,LIU Junyi,et al.Variation Characteristics and Causes of Runoff-Sediment Relationship in Kuye River Basin in the Middle Reaches of the Yellow River[J].Research of Soil and Water Conservation,2022,29(04):68-74.
黄河中游窟野河流域水沙关系变化特征及其成因分析
- Title:
- Variation Characteristics and Causes of Runoff-Sediment Relationship in Kuye River Basin in the Middle Reaches of the Yellow River
- 文章编号:
- 1005-3409(2022)04-0068-07
- Keywords:
- runoff and sediment discharge changes; human activities; climate change; Kuye River Basin; middle reaches of the Yellow River
- 分类号:
- P333
- 文献标志码:
- A
- 摘要:
- 为探讨人类活动和气候变化对窟野河流域水沙情势的影响,基于1956—2019年窟野河流域降水量、径流量和输沙量等监测数据,运用累积距平法、双累积曲线等方法对窟野河流域水沙变化的特征及其成因进行了分析。结果表明:窟野河流域降水量随时间变化呈不明显减小趋势,而径流量和输沙量随时间变化却呈显著减小趋势,流域水沙减少的因素不是气候变化引起的降水因素; 径流量和输沙量年际变化的转折年份为1979年和1997年; 同基准期A(1956—1979年)相比,B时期(1980—1997年)气候变化对径流量和输沙量的贡献率分别为14.25%,14.22%,人类活动对径流量和输沙量的贡献率分别为85.75%,85.78%,C时期(1998—2019年)气候变化对径流量和输沙量的贡献率分别为8.76%,6.65%,人类活动对径流量和输沙量的贡献率分别为91.24%,93.35%,降水变化和人类活动都是造成窟野河流域水沙减少的影响因素,其中流域内逐年增强的人类活动是窟野河流域径流和输沙减少的主要因素,而气候变化引起的降水减少是次要因素。
- Abstract:
- In order to investigate the impact of human activities and climate change on the runoff and sediment regime in the Kuye River Basin, based on the monitoring data of precipitation, runoff and sediment transport in the Kuye River Basin from 1956 to 2019, cumulative anomaly method and double cumulative curve method were used to analyze the attribution of runoff and sediment change in the Kuye River Basin. The results show that the precipitation in the Kuye River Basin did not decrease significantly with time, but the runoff and sediment transport decreased significantly with time, and the decreasing factor of runoff and sediment was not the precipitation factor caused by climate change; the turning point years of runoff and sediment transport were yeas of 1979 and 1997; compared with baseline period A(1956—1979), climate change contributed 14.25% and 14.22% to runoff and sediment, and human activities contributed 85.75% and 85.78% to runoff and sediment, respectively in B period(1980—1997); in C period(1998—2019), climate change contributed 8.76% and 6.65% to runoff and sediment, respectively, and human activities contributed 91.24% and 93.35% to runoff and sediment, respectively. Precipitation change and human activities are the influencing factors of runoff and sediment reduction in the Kuye River Basin. The increasing human activity is the main factor to reduce runoff and sediment transport in the Kuye River Basin, while the decrease of precipitation caused by climate change is the secondary factor.
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备注/Memo
收稿日期:2021-05-15 修回日期:2021-06-14
资助项目:国家自然科学基金“黄土区地表产流机制变化对植被恢复的响应”(42077075)
第一作者:刘强(1983—),男,甘肃兰州人,博士,副教授,主要从事区域资源与环境研究。E-mail:guangmingliu1983@163.com
通信作者:穆兴民(1961—),男,陕西华阴人,博士,研究员,博士生导师,主要从事生态水文研究。E-mail:xmmu@ms.iswc.ac.cn