神农架大九湖盆地岩溶塌陷的高分辨率遥感调查

Investigation for Karts collapse in Dajiu lake basin in Shennongjia by using high resolution Remote Sensing

神农架大九湖盆地岩溶塌陷的直径一般在2～20m之间，利用中等分辨率卫星影像很难识别，而通过高分辨率的快鸟（Quickbird）卫星影像，可以容易快速地识别出来，野外实际调查验证显示其识别率相当高，只有一些隐藏在岩壁下的小型落水洞难以在影像上找到．通过影像识别和野外调查，查明了大九湖盆地岩溶塌陷的特征、类型和空间分布规律，为大九湖湿地修复和地质灾害的防治提供了基础资料．

The Karst collapses in Shennongjia Dajiu lake basin are generally between 2- 20 m in diameters, so it is very difficult to distinguish them by using medium resolution satellite image. However, these Karst collapses can be fast distinguish easily through high resolution Remote Sensing image from Quickbird satellite. The recognition rate for the collapses is verified quite high through in situ investigation, only some avens hided beside rock hill is difficult to find in image. By image interpretation and field work, the characteristics, types and spatial distribution regulation of the Karst collapses has been found down in Dajiu lake basin. The results can be used as foundation data for the wetland repair and geological disaster prevention and control.