NING Zhen,GAO Guangyao,FU Bojie.Characteristics and Attribution Analysis of Sediment Yield Changes in Helong Region of the Yellow River[J].Research of Soil and Water Conservation,2022,29(03):38-42.
黄河河龙区间输沙变化特征及归因分析
- Title:
- Characteristics and Attribution Analysis of Sediment Yield Changes in Helong Region of the Yellow River
- 文章编号:
- 1005-3409(2022)03-0038-05
- 分类号:
- S157.1
- 文献标志码:
- A
- 摘要:
- 黄河中游河口镇—龙门区间(河龙区间)是黄河泥沙的主要来源区。近年来黄河输沙量急剧变化,为了识别黄河输沙量变化的原因,基于河龙区间15个流域1961—2017年的输沙和降雨数据,分析了研究时段内输沙模数的变化趋势和突变时间,定量区分气候变化和人类活动对输沙减少的贡献率。结果表明:研究区内15个流域的输沙模数均呈现显著的下降趋势,突变时间集中在80,90年代。降雨减少和水土保持措施的增加共同导致了输沙模数的下降,在多数流域,人类活动是导致输沙模数减少的主要因素,80年代后急剧增加的水土保持措施有效减缓了流域产沙。研究成果可为黄河流域生态恢复及水沙调控提供决策支持。
- Abstract:
- Sediment discharge of the Yellow River has changed rapidly in recent years. It is of great significance to identify the causes of the variation of sediment discharge in the Yellow River for the formulation of watershed management strategies. Hekouzhen-Longmen region(Helong region)in the middle reaches of the Yellow River is the main source area of sediment yield. Based on the sediment yield and precipitation data of 15 basins in the Helong region during 1961—2017, we analyzed the variation trend and abrupt change time of specific sediment yield during the study period, and quantitatively identified the contribution rates of climate change and human activities to sediment transport reduction. The results show that the specific sediment yield of the 15 basins in the study area presented a significant downward trend, and the abrupt change time concentrated in the 1980s and 1990s. The decrease of precipitation and the increase of soil and water conservation measures led to the decrease of specific sediment yield. Human activities in most basins are the main factor leading to the decrease of specific sediment yield. The sharp increase of soil and water conservation measures after the 1980s had effectively slowed down the sediment yield. This study attempts to provide decision-making support for ecological restoration and water and sediment regulation in the Yellow River basin.
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相似文献/References:
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CAO Wei,GAO Yun-fei,LI Zhi-guang,et al.Quantitative Calculation of Biological-control Factor in Helong Region[J].Research of Soil and Water Conservation,2012,19(03):96.
[2]马芹,张晓萍,万龙,等.黄土高原河龙区间最大日雨量(PMP)极值拟合及时空演变特征[J].水土保持研究,2012,19(02):71.
MA Qin,ZHANG Xiao-ping,WAN Long,et al.Fitting of the PMP Values and Identifying Its Spatiotemporal Characteristics in the Helong Section on the Loess Plateau[J].Research of Soil and Water Conservation,2012,19(03):71.
[3]张建兴,马孝义,屈金娜.气候变化对黄河中游河龙区间径流量的影响分析[J].水土保持研究,2007,14(04):197.
ZHANG Jian-xing,MA Xiao-yi,QU Jin-na.Effects of Climatic Variations on Runoff Volume over the He-long Reach of the Middle Yellow River[J].Research of Soil and Water Conservation,2007,14(03):197.
备注/Memo
收稿日期:2020-03-29 修回日期:2020-05-17
资助项目:国家自然科学资助项目“黄土丘陵区典型流域水沙变化的时空尺度特征与驱动机制研究”(41471094); 国家优秀青年科学资助项目“半干旱区土壤—水文—植被相互作用”(41822103)
第一作者:宁珍(1991—),女,北京人,博士研究生,主要研究方向为土壤侵蚀。E-mail:ningzhen1991@foxmail.com
通信作者:高光耀(1984—),男,湖北仙桃人,研究员,博士,主要研究方向为生态水文。E-mail:gygao@rcees.ac.cn