中文摘要：

利用年径流时空上的统计特性，用时空协克立格法对缺测径流数据进行了估计。该法的有效性决定于对反应有孔穴效应年径流的变差函数的合理拟合。根据年径流系列变差函数非单调递增、具有周期波动特性，用指数函数型-维孔穴效应模型，拟合实测年径流系列的变差函数，确定出协同克立格法最优估计的参数，并估计了缺测年径流数据，取得令人满意的插值结果。

英文摘要：

The problem of stream flow record reconstruction is aimed at using all available estimate missing values. The annual runoff records present the stationary and lag-one autocorrelations in the time and the cross-correlations behavior between different gagging stations in the space. The missing runoff records have been estimated by time-space Co-kriging in terms of these behaviors. The validity of time-space Cokriging depends on how correct fitting the variograms of annual runoff records which appear Hole-effective behavior. The variograms of runoff records were fitted by the exponential one dimensional hole-effective model according to the variograms which are not monotonous raising and have trends for determining parameters of Co-kriging. The missed annual runoff records have been estimated by time-space Co-kriging using the parameters. The estimated results are reasonable.