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中国沙漠 ›› 2006, Vol. 26 ›› Issue (6): 982-985.

• 天气与气候 • 上一篇    下一篇

气候变化对渭河上游径流量和输沙量的影响

邓振镛1, 张 强1, 李栋梁2, 朱拥军3, 董安祥1, 张 毅4   

  1. 1.中国气象局兰州干旱气象研究所/甘肃省干旱气候变化与减灾重点实验室, 甘肃 兰州 730020； 2.中国科学院 寒区旱区环境与工程研究所, 甘肃 兰州 730000； 3.甘肃省天水市气象局, 甘肃 天水 741000； 4.甘肃省气象局, 甘肃 兰州 730020
  • 收稿日期:2005-06-16 修回日期:2006-01-09 出版日期:2006-12-20 发布日期:2006-12-20

Influence of Climate Change on Runoff and Sediment Discharge in upriver Area of Weihe River

DENG Zhen-yong1, ZHANG Qiang1, LI Dong-liang2, ZHU Yong-jun3, DONG An-xiang1, ZHANG Yi4   

  1. 1.Key Laboratory of Arid Climatic Variation and Disaster Reduction, Lanzhou Arid Meteorological Institute, China Meteorological Administration, Lanzhou 730020, China; 2.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 3.Gansu Tianshui Meteorological Bureau, Tianshui 741000, Gansu, China; 4.Gansu Meteorological Bureau, Lanzhou 730020, China
  • Received:2005-06-16 Revised:2006-01-09 Online:2006-12-20 Published:2006-12-20

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摘要： 利用渭河上游北道水文站的径流量和输沙量资料和渭河上游流域16个气象站的气象资料,分析了1951—2000年期间气候变化对渭河上游径流量和输沙量的影响。结果表明:渭河上游径流量变化总体呈下降趋势,跃变点发生在1967年,20世纪60年代径流量最大,90年代以后径流量最小。径流量的变化主要取决于流域降水量的变化。葫芦河支流流域的降水量对径流量变化的影响最为敏感,其次是榜沙河支流流域的降水量。输沙量的多少主要取决于上游降水量的多少和大雨的次数,其次是风速大小和大风次数的多少。

关键词: 渭河上游, 气候变化, 径流量, 输沙量

Abstract: Based on hydrological data recorded by Beidao hydrological station and meteorological data by the 16 stations in upriver area of Weihe river, we have analyzed the climate change from 1951 to 2000 and its influence on river runoff and sediment discharge. Results show that runoff in upriver area of Weihe river generally appeared a downward trend. Abrupt change appeared in 1967. Runoff was the biggest in the 1960s, appeared a downward trend from the 1970s, and was the smallest since 1990s. Runoff change predominantly depended on precipitation of river valley. The runoff of Weihe river is extremely sensitive to precipitation variation in Hulu river tributary valley, secondly to that in Bangsha river tributary valley. The sediment discharge depended greatly on precipitation amount and number of heavy rain in upriver area, secondly on wind velocity and gale days.

Key words: upriver area of Weihe river, climate change, river runoff, sediment discharge

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