Changes of Runoff and Sediment on Mainstream of Yellow River in Qinghai Province

LI Wanshou; GAO Xiaoping; SUN Shengli

doi:11894/1005-829x.2001.21(2).18

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Changes of Runoff and Sediment on Mainstream of Yellow River in Qinghai Province

- Changes of Runoff and Sediment on Mainstream of Yellow River in Qinghai Province
- Bulletin of Soiland Water Conservation Vol. 20, Issue 2, Pages: 18-22(2001)
- 作者机构：
  
  1. 青海省乐都县水利局, 青海乐都,810700
  2. 黄河水土保持天水治理监督局,甘肃,天水,741000
  3. 黄委会黄河上游水文水资源局,甘肃,兰州,730030
- 作者简介：
- 基金信息：
- DOI：11894/1005-829x.2001.21(2).18
  CLC：
- Published：2001
- 稿件说明：
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LI Wanshou, GAO Xiaoping, SUN Shengli. Changes of Runoff and Sediment on Mainstream of Yellow River in Qinghai Province[J]. Bulletin of Soiland Water Conservation, 2001, 20(2): 18-22.
DOI：

LI Wanshou, GAO Xiaoping, SUN Shengli. Changes of Runoff and Sediment on Mainstream of Yellow River in Qinghai Province[J]. Bulletin of Soiland Water Conservation, 2001, 20(2): 18-22. DOI： 11894/1005-829x.2001.21(2).18.

摘要

青海省境内黄河干流主要控制站唐乃亥水文站多年平均年径流量2.07×10

，占黄河流域年径流量5.80× 10

的 34.5 %，占青海境内黄河干流年径流量的91.0 %。唐乃亥以上是黄河水量的主要供给地和水源涵养区之一。统计分析了唐乃亥站1919- 1999年81a来径流量和输沙量的变化特征，结果表明，年径流枯水年和偏枯水年出现最多的年份是20年代和90年代，丰水年和偏丰水年出现最多的年份是40，60年代和 80年代。境内年输沙量的变化主要取决于年径流量的变化，水沙量变化是同步的，相关关系显著。90年代青海境内黄河干流来水来沙减少主要是由于年径流丰、平、枯的周期性变化引起的。90年代属偏枯水期，与历史上丰、枯水程度对比分析，90年代偏枯水期属正常，境内年径流量的变化没有向减少趋势发展，水沙量的变化是稳定的。

Abstract

Tangnaihe hydro-station is one of major controlling station of the Yellow river in Qinghai province. The average annual runoff through the hydro-station is 2. 0×1010m3

with 34. 5 %of the annual runoff 5. 8×1010m3 of Yellow river and 91. 0%of the runoff in the main aspect among the Qinghai province. The place beyond Tangnaihe is one of the major water supply and conserving area for the Yellow river. Through analyzing statical character of runoff and sediment across the station from 1919 to 1999

the years that low and partial low flow year appeared frequently were in the 1920' s and 1990' s

and the years that high and partial high flow year appeared frequently were in the 1940' s

1960' s and 1980' s. Changes of annual sediment mainly depended on annual runoff

they changed synchronously and were significantly related with each other. The decrease of runoff and sediment on the mainstream of the Yellow river in 1980' s was mainly due to periodic changes of annual runoff. And 1990' s belong to a partial high flow period. Compared with low and high flow degrees in history

the partial low flow period in 1990' s is normal. Changes of annual runoff on the Yellow river in Qinghai province have not developed towards decline

and changes of runoff and sediment were stable.

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