快鸟图像的地质灾害遥感信息识别研究

Quick-Bird Image Based Recognition of Remote Sensing Information of Geo-hazards

研究目的:探讨快速、准确的提取中国西南地区滑坡、泥石流灾害的新方法。研究方法:本文利用高空间分辨率的Quick Bird图像,突破传统调查方法的限制,发挥其宏观、综合、直观、快速等优点,在Quick Bird图像上详细地圈定滑坡和泥石流灾害体的位置及发育范围,结合高程和坡度等基础地理信息,探讨地质灾害发育的空间规律。研究结果:研究表明该研究区内地质灾害以泥石流、滑坡为主,主要沿河及公路等人类活动较密集的区域分布,地质灾害的发生大多受到降雨和工程活动等因素的影响。研究结论:为研究区内的防灾和减灾工作提供重大依据。

Study purpose： discuss the new method of extracting the information of the landslide and debris flow quickly and precisely. Study method： Taking advantages of the high resolution Quick-bird image＇s macroscopic, comprehensive, direct and fast features, the location and developing areas of the landslide and debris flow disaster can be delineated precisely on the Quick-bird image, and the spatial rules of the geo-hazard development can be found out by combining certain basic geographical information such as the elevation and slope. Study results： this research indicates that main geo-bazards of the study area are the landslide and debris flow which often distribute along rivers and roads, and are activated by rains and construction activities mainly. Study conclusion： This research supports greatly the disaster prevention and reduction in the studying area