洞庭湖水位变化趋势及原因分析

The analysis of evolution trend and causes of water level variation in Dongting Lake

摘要: 根据实测资料，采用Kendall秩次相关检验、线性回归方法对东洞庭湖、南洞庭湖、目平湖代表水位站年平均水位进行趋势性检验，表征了洞庭湖的历史水位变化趋势，同时分析了三峡水库运用后的2003～2010年与运用前1961～2002年洞庭湖水位变化情况。结果表明从1961~2010年系列来看，洞庭湖代表站点年平均水位未见趋势性变化。

Abstract: Based on the measured data, the variation trend of annual average water level was verified at water level stations of Dongting Lake and Mupin Lake using Kendall rank correlation testing and linear regression method. The evolution trend of historical water level in Dongting Lake was represented, Comparison of water level changing before and after the Three Gorges Reservoir during the period of 2003 to 2010 and 1961 to 2012, The results showed that the average water level in Dongting Lake were stable from 1961 to 2010.