中文摘要：

为研究龙门山断裂带晚新生代以来分段活动性导致断裂周边地区差异隆升的问题，利用航天飞机雷达地形测绘使命（shuttleradartopographymission，SRTM）数字高程模型（DEM）对龙门山断裂带及其周边地区进行地形地貌整体趋势、分段性高程起伏和坡度变化特征的综合分析。分析结果表明，龙门山断裂带在地形上基本保持了上新世至早更新世强烈活动的遗迹，表现出南高北低的趋势；但地形起伏的分布表现出明显的分段性，地形段落边界与龙门山断裂带主要段落边界一致。龙门山断裂带北段的地形地貌主要受河流侵蚀控制，但在青川断裂附近地形起伏受构造活动影响甚大；断裂带中段地形起伏明显受构造控制；断裂带南段构造活动对地形起伏的控制仅出现在靠近鲜水河断裂的区域。此外，地表破裂带分布的地形起伏与汶川地震造成的地表同震位移的分段性和区域变形场分布也是一致的，表明这种最新构造活动对地形地貌的改造现今仍在继续。

英文摘要：

The segmental activity of the Longmenshan fault belt resulted in the difference in uplift of its neighboring areas. In this paper, the authors used SRTM （shuttle radar topography mission） digital elevation model （DEM） to analyze the topography, local relief and slope of the Longmenshan fault zone and its adjacent areas. The topography of the study area basically maintains the tendency of decreasing elevation from south to north which was caused by strong tectonic movements in Plioeene -early Pleistocene period. However, the local relief shows obvious characteristics of segmentation. The borders of these segments coincide with the segment border of the Longmenshan fault belt. The geomorphic feature along the northern section of the Longmenshan fault zone is mainly controlled by river erosion,whereas the local relief beside the Qingchuan fault is greatly impacted by tectonic movements. The local relief of the middle section is obviously controlled by the latest tectonic movements. However, in the southern section, the latest tectonic movements only control the area near the Xianshuihe fault. In addition, the local relief along the surface rupture zone of 2008 Wenchuan earthquake is consistent with the surface co - seismic displacement segmentation and regional deformation field. These data indicate that the tectonic movements since late Cenozoic are still reshaping the geographic and geomorphic characteristics nowadays.