三峡水库蓄水前后气候变化分析  

Analysis of Climate Change before and after the Impoundment of the Three Gorges Reservoir

作　　者：武慧铃 周建中[1] 田梦琦 娄思静 贾本军 WU Huiling;ZHOU Jianzhong;TIAN Mengqi;LOU Sijing;JIA Benjun(School of Hydropower&Information Engineering,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China)

机构地区：[1]华中科技大学水电与数字化工程学院,湖北武汉430074

出　　处：《水力发电》2021年第5期30-35,共6页Water Power

基　　金：国家自然科学基金重点支持项目资助(U1865202);国家自然科学基金重点项目资助(91547208)。

摘　　要：利用1962年~2017年三峡水库及其周边区域24个站点的气温和降水数据,结合Mann-Kendall非参数检验法和累积距平法分析三峡水库蓄水前后局地气候变化趋势与突变情况。结果表明,气温和降水均受影响,且影响程度具有明显的地理分布规律。蓄水对气温趋势具有稳定作用。蓄水后,气温增长幅度增大的站点主要分布在四川盆地,幅度减小的站点主要分布在秦岭-大巴山一带、三峡大坝下游区域及寸滩宜昌段右岸;秦岭-大巴山一带及四川盆地的降水量增加,寸滩宜昌段沿河及右岸区域的降水量减少。研究对进一步探明气候环境与大型水利工程蓄水的相互影响具有重要意义。The temperature and precipitation data from 1962 to 2017 at 24 stations in the Three Gorges Reservoir and its surrounding areas are used to analyze the local climate change trend and abrupt change before and after the impoundment of the Three Gorges Reservoir by the combination of the Mann-Kendall nonparametric test and the cumulative anomaly method.The results show that the impoundment of the Three Gorges Reservoir has an influence on the temperature and precipitation,and the influence degree has an obvious geographical distribution law.The impoundment of reservoir has a stabilizing effect on the temperature trend of the Three Gorges Reservoir and its surrounding areas.After impounding,the stations with increased temperature increase are mainly distributed in the Sichuan Basin,while the stations with decreased temperature increase are mainly distributed in the Qinling-Dabashan area,the downstream area of three Gorges Dam and the right bank of Cuntan Yichang section.After impounding,the precipitation in the Qinling-Dabashan area and the Sichuan Basin is increased,while the precipitation in the area along the river and the right bank of the Cuntan Yichang section is decreased.The study is of great significance to further explore the interaction between the climatic environment and the impoundment of large water conservancy projects.

关 键 词：气候变化 蓄水 非参数检验 三峡水库 

分 类 号：TV11[水利工程—水文学及水资源]