新疆北疆地表水资源时空分布及变化特征初探

采用经验正交函数展开分析了新疆北疆地表水资源的时空分布特征，将北疆地表水资源序列由２５０ａ延长到４１２ａ，并首次提出了将两个来自不同树轮年表的重建序列进行合并所应满足的条件。分析了４１２ａ来北疆地表水资源的突变与渐变特征，对其形成了一些新认识，较之以前的工作取得了一些新进展。

The Preliminary Study of the Features of the Spatial and Temporal Distribution of Surface Water Resources and Their Variation in the Northern Xinjiang

In this paper, firstly we analyse the features of the spatial and temporal distribution of surface water resources in the Northern Xinjiang by use of empirical orthogonal function expansion Secondly on the basis of the researches we have done before, we extend the sequence of the surface water reources in the Northern Xinjiang from 250 to 412 years, and propose the conditions for combining two sequences that come from different tree-ring chronologies into one sequence At last we analyse the features of abrupt and gradual changing of surface water resources in the Northern Xinjing in the last 412 years