中文摘要：

雅鲁藏布江流域地形和气候环境复杂,而站网分布稀疏,研究该流域气象要素的空间分布对流域径流模拟和区域水资源管理具有重要意义.本文采用反距离加权法、全局多项式法、局部多项式法、泛克里格法、考虑高程因素的协克里格法以及改进的克里格法对雅鲁藏布江流域年平均降雨量和气温的空间分布进行分析,并应用交叉验证法对插值结果进行比较.结果表明,考虑高程因素的协克里格法对年平均降雨量和气温的空间内插结果有较大改善;气温进一步采用改进的克里格法进行空间内插,精度得到提高.

英文摘要：

The topography is complex and climate conditions are complicated in Yarlung Zangbo River basin.Therefore the spatial distribution of meteorological variables needs to be studied to simulate water runoff and to manage local water resources.Inverse distance weighted method,global polynomial interpolation,local polynomial interpolation,universal Kriging,co-Kriging considering elevation,and modified Kriging with elevation were used to analyze spatial distribution of annual average precipitation and temperature in the study area.Cross validation was used to compare the interpolation data.Co-Kriging with an elevation factor improved interpolation accuracy for annual average precipitation and temperature.Modified Kriging achieved better result than co-Kriging in interpolation of annual average temperature.