中文摘要：

面积高程积分值（HI）作为揭示区域构造相对活动性的指标,在地貌学中得到了广泛的应用.传统的研究多以流域作为载体分析HI值的特性,然而HI值是否受流域大小及形状的影响存在争议.以白龙江流域作为试验区,利用ASTER 30 m及SRTM90mDEM数据,基于不同大小的分析窗口分别计算了流域的HI值.研究表明：1.原始HI值没有明显的空间分布格局,受分析窗口空间分布位置、DEM分辨率、岩性差异的影响不大,但是受分析窗口大小的影响较大,存在尺度依赖.2.对原始HI值进行空间自相关分析后HI值表现出强的空间自相关性,且“热点分析”表明HI值高值聚集区分布在白龙江中上游,与地壳隆升强烈及断裂活跃的作用相关,低值聚集区分布在白龙江下游及一些河谷中.研究表明,空间自相关分析的应用,能够使基于分析窗口提取的HI值呈现出更多的构造意义.

英文摘要：

Hypsometfic integral has been widely used in Geomorphology study as an index to depict the recent and active structures for its sensitivity to the influence of tectonic and different lithology. The traditional methods to study HI often use drainage basins, this may be dependent of basin geometry and drainage area. To avoid this influ- ence, we calculate His using two digital elevation models of 30 and 90 m of pixels resolution in Bailongjiang basin of western China（ Gansu ,Sichuan）. The relations between relief amplitude,mean elevation and HI are also analyzed in different analysis window. Meanwhile, we applied spatial pattern analysis using Global Moran＇s index and Getis - Ord Gi ＊ index to measure the spatial autocorrelation of HI and the distribution of hot spots. It can be concluded that spatial distributions of HI do not show clear spatial patterns and correlation with mean elevation and relief am- plitude. HI are independent on the resolution of DEM and lithology but are scale influenced. The hot spots define the uplift of crust and active faults in the upstream of Bailongjiang basin, the cold spots define the downstream of bailongjiang and some fiver valley regions.