【摘要】 为分析地形地貌与滑坡敏感性之间的关系,借助地理信息系统(GIS)空间分析技术和滑坡影响因子贡献率的数学方法,研究雅安市雨城区坡度坡向对滑坡的影响程度的大小。通过研究得到了每一区间的坡度和坡向对滑坡的贡献率,定量地分析了坡度、坡向对研究区域的滑坡发育的关系。研究结果表明,坡度20～30°区间的区域为滑坡最敏感的区域,坡向带90～120°区间是滑坡灾害最敏感的区域,但坡向带每一区域的贡献率差别不大。更多还原

【Abstract】 The sensitivity relation of topography and geomorphology with landslides in Yucheng district,Ya’an city were analyzed.The contribution rates of slope gradients and slope aspects in each section were calculated by GIS technology and the proposed contribution rate method of landslide influence factor.The relations of slope gradient and slope aspect with landslide development were quantitatively analyzed.It shows that slope gradient among 20°-30° and slope aspect among 90°-120° are the most sensitive section.But the contribution rate of slope aspect in each section has little difference.更多还原