| 1955-2009年澧水流域径流泥沙演变及影响因素 |
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| 引用本文： | 刘碧维,宋楠,耿胜慧,陈茜.1955-2009年澧水流域径流泥沙演变及影响因素[J].水土保持通报,2014(6):360-363. |
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| 作者姓名： | 刘碧维 宋楠 耿胜慧 陈茜 |
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| 作者单位： | 湖南省水利水电勘测设计研究总院, 湖南 长沙 410007;湖南省水利水电勘测设计研究总院, 湖南 长沙 410007;湖南省水利水电职业技术学院, 湖南 长沙 410131;湖南省水利水电勘测设计研究总院, 湖南 长沙 410007 |
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| 基金项目： | 湖南省水利科技推广补助经费项目"湖南澧水流域水土流失与生态环境研究"[湘水科技(2008)147-1] |
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| 摘 要： | 为了掌握澧水长时间序列的径流泥沙演变规律,运用Pearson相关系数法分析了1955-2009年澧水年径流量和年输沙量。结果表明:近55 a来澧水年径流量没有发生明显变化,而年输沙量呈显著下降趋势,并在1983年发生了突变。通过分析降雨、径流及输沙量之间的变化关系可知,在1955-2009年澧水年降水量无明显变化的情况下,人为因素是年输沙量显著减少的主要因素,水土保持综合治理和水利工程拦沙导致澧水进入洞庭湖的泥沙量每年相应减少约4.59×106 t。
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| 关 键 词： | 径流量 输沙量 影响因素 澧水 |
| 收稿时间： | 2013/5/22 0:00:00 |
| 修稿时间： | 2013/7/21 0:00:00 |
Evolution Characteristics and Impacting Factors of Annual Runoff and Sediment in Lishui River During 1955-2009 |
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| LIU Bi-wei,SONG Nan,GENG Sheng-hui and CHEN Xi.Evolution Characteristics and Impacting Factors of Annual Runoff and Sediment in Lishui River During 1955-2009[J].Bulletin of Soil and Water Conservation,2014(6):360-363. |
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| Authors: | LIU Bi-wei SONG Nan GENG Sheng-hui and CHEN Xi |
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| Institution: | Hu'nan Hydro & Power Design Institute, Changsha, Hu'nan 410007, China;Hu'nan Hydro & Power Design Institute, Changsha, Hu'nan 410007, China;Hu'nan Technical College of Water Resources and Hydropower, Changsha, Hu'nan 410131, China;Hu'nan Hydro & Power Design Institute, Changsha, Hu'nan 410007, China |
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| Abstract: | Using the Pearson correlation coefficient method, annual runoff and sediment were analyzed in order to find out the evolution characteristics and its impacting factors in the Lishui River during 1955-2009. The results showed that the annual runoff had no obvious change during this period, while the annual sediment transportation appeared significant decline trend, and had sudden change in the year of 1983. The relationship between precipitation, runoff and sediment transportation variation were analyzed, it turned out that human activities were the main reason causing the sediment transportation descent when the annual precipitation has no obvious change during 1955 to 2009. Thus, the sediment from the Lishui River to the Dongting Lake decreased by 4.59×106 t every year accordingly. |
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| Keywords: | runoff sediment transportation impacting factor Lishui River |
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