地理科学

地理科学 ›› 2006, Vol. 26 ›› Issue (6): 674-681.doi: 10.13249/j.cnki.sgs.2006.06.674

• 论文 • 上一篇    下一篇

南水北调西线一期工程调水区径流量与影响因子关系分析——以达曲为例

门宝辉1,2, 刘昌明2, 夏军2, 刘苏峡2   

  1. 1. 华北电力大学能源与动力工程学院水利水电工程系, 北京 102206;
    2. 中国科学院地理科学 与资源研究所陆地水循环与地表过程重点实验室, 北京 100101
  • 收稿日期:2005-07-22 修回日期:2005-11-15 出版日期:2006-11-20 发布日期:2006-11-20
  • 基金资助:
    中国博士后科学基金(2005037430)、黄河水利委员会勘测规划设计研究院项目"南水北调西线一期工程引水枢纽下游生态环境需水量研究"及国家重点基础研究发展规划(973)项目(G19990436)资助。

Runoff and Its Impacting Factors in the Water-exporting Rivers of the First Stage Project of the South-to-North Water Transfer Scheme via the Western Route:—A case study in Daqu

MEN Bao-Hui1,2, LIU Chang-Ming2, XIA Jun2, LIU Su-Xia2   

  1. 1. Department of Hydroulic and Hydropower Engineering School of Energy and Power Engineering North China Electric Power University, Beijing 102206;
    2. Key Laboratory of Water Cycle and Related Land Surface Process, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101
  • Received:2005-07-22 Revised:2005-11-15 Online:2006-11-20 Published:2006-11-20

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59

摘要： 以达曲为例,利用朱倭站1961~1996年的水文资料及东谷站的降水量资料,分析南水北调西线一期工程调水区径流量与影响因子的关系,结果表明:年平均气温呈上升趋势,其线性变率为0.24℃/10 a,36年共上升了0.864℃,以20世纪80年代以后上升趋势更为显著;年蒸发量呈增加趋势,其线性变率为+2.78 mm/10 a;年平均降水量及春、冬及非汛期降水逐年增加,其中年平均降水气候倾向率达+5.2 mm/10 a;调水区达曲的年平均径流及春、秋、汛期、非汛期流量呈逐年增加趋势,其中以春季和非汛期尤为明显。虽然气温升高、蒸发量增大,但这不是影响径流的直接因素,其增量还不足以抵消降水对径流的增加,降水是影响调水区径流量多少的主要气候因子。

Abstract: Based on the runoff in 1961-1996 at Zhuwo Hydro-station and the precipitation data at Donggu Hydro-station, the relationship between runoff amount and its impacting factors in the Water-exporting Rivers of the First Stage Project of the South-to-North Water Transfer Scheme via the Western Route is analyzed. The result shows that the annual mean air temperature was increasing, with a linear variation rate of 0.24℃/10a, and it has increased 0.864℃ since the 1960s; the annual evaporation was increasing, with a linear variation rate of +2.78mm/10a; the annual mean precipitation and precipitation in spring, winter and non-flood season have been increased since the 1960s, with a linear variation rate of annual precipitation of +5.2mm/10a; the annual runoff amount and runoff amount in spring, autumn, flood season and non-flood season were increasing, and the runoff amount in spring and non-flood season were more significant. The increasing temperature and evaporation were not the main factors to impact the runoff amount, while the annual precipitation was one of the main factors for impacting the runoff amount at the Water-exporting Rivers of the First Stage Project of the South-to-North Water Transfer Scheme via the Western Route.

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  • TV121/TV212.3