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中国沙漠 ›› 2018, Vol. 38 ›› Issue (1): 200-209.DOI: 10.7522/j.issn.1000-694X.2016.00149

• 水文与水资源 • 上一篇    下一篇

1956-2013年曹家湖流域径流深变化

李永格1,2, 李宗省1, 冯起1   

  1. 1. 中国科学院西北生态环境资源研究院 内陆河流域生态水文重点实验室/甘肃省水文水资源工程技术中心, 甘肃 兰州 730000;
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2016-07-16 修回日期:2016-11-10 出版日期:2018-01-20 发布日期:2018-01-20
  • 通讯作者: 李宗省(E-mail:lizxhhs@163.com)
  • 作者简介:李永格(1992-),女,山东费县人,硕士研究生,研究方向为环境过程与可持续发展。E-mail:18354950235@163.com
  • 基金资助:
    甘肃省杰出青-基金项目(1506RJDA282);中国科学院“西部之光”西部博士项目;中国博士后管委会博士后国际交流计划项目(20140043)

Runoff Depth in the Caojiahu Lake Basin of Gansu, China, during 1956-2013

Li Yongge1,2, Li Zongxing1, Feng Qi1   

  1. 1. Key Laboratory of Ecohydrology of Inland River Basin/Gansu Hydrology and Water Resources Engineering Research Center, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2016-07-16 Revised:2016-11-10 Online:2018-01-20 Published:2018-01-20

摘要: 在古浪河水文站观测数据基础上,运用数理统计方法对曹家湖流域1956-2013年径流深变化的研究表明:(1)曹家湖流域春、夏、秋、冬季径流深的变化趋势均表现为20世纪80年代偏多,2000年后偏少,这两个时段内年径流深与季节径流深变化一致;除冬季外,其他季节20世纪60年代径流深均高于多年平均;夏、冬季和年径流深70、90年代偏多。(2)就年际变化而言,春、夏、秋季径流深均表现为减小趋势,但不显著,冬季径流深呈不显著微弱增加趋势。受季节变化的影响,年径流深也表现出减小的态势。(3)各季节径流深变化均存在4~18 a的短周期变化,除春季外,其他季节径流深变化还存在28~30 a的长周期变化。(4)研究区春、秋、冬季和年径流深分别在2008、1961、2007、2007年突变减小,除冬季外,其他均未通过95%的显著性水平检验;研究时段内,夏季径流深经历了两次突变显著减少,分别出现在1966年和2007年。(5)研究区春、夏、秋季以及年降水量与径流深之间存在显著的正相关关系,冬季降水量与径流深存在不显著的负相关关系。

关键词: 曹家湖, 径流深, 突变, 降水量

Abstract: In this paper,using hydrological data of Gulang River Hydrological Station during 1956-2013 in the Caojia Lake Basin, we analyzed the inter-decadal and inter-annual change of runoff depth by linear trends and the 5-year trend of sliding, tested climate mutations on Mann-Kendall method, studied the cycle to climate change in wavelet analysis, the conclusions are following:(1)Spring, summer, autumn and winter runoff depth is abundant in 1960s, but it is relatively lower after 2000, and in these two research period, annual runoff depth is consistent with the change of the seasonal runoff depth; In addition to the winter, other seasons runoff depth are higher than multi-year average in the 1960s; Summer, winter and annual runoff depth are abundant in 1970s and 1990s; (2)variation in spring, summer and autumn runoff depth tended to reduced, but not obvious, which runoff depth in winter displayed an slight increase. Affected by seasonal change, the annual runoff depth also showed a decrease trend; (3) Seasonal runoff depth variation, there were about 4 years, 18 years and in addition to the spring, above 28-30 years of cycle during 1956-2013; (4) Mutation reduce of the runoff depth happened in the years of 2008, 1961, 2007, 2007 for spring, autumn, winter and annual, and what's more, only the summer runoff depth experienced two mutation reduce, respectively, in 1966 and 2007; (5) There was a significant positive correlation between the spring, summer, autumn and annual precipitation and the runoff depth in the study area, and winter precipitation and runoff depth exist no significant negative correlation relationship.

Key words: Caojia Lake Basin, runoff depth, mutation, precipitation

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