Being located in a seismic zone, the geology is fragile in Taiwan. Landslides, floods and other disasters induced by typhoon occur frequently. For land conservation, long-term monitoring of landslides is necessary in order to avoid or reduce the losses caused by disasters. This project employs high resolution aerial imagery acquired by Z/I DMC and Leica ADS40, and the existing mapping software and hardware used in Aerial Survey Office, to develop a technique for rapidly extracting multi-dimensional information of landslide, and to build a multi-temporal landslide database. It is expected that the outcome of this project can provide high-quality landslide information to support decision making on disaster prevention and mitigation, as well as restoration of landslide areas. This is a three-year project. The task in the first year is to associate aerial imagery and landslide maps, as well as to collect and to extract the basic landslide data of test areas. In the second year, it is aimed to produce landslide terrain data and to build the initial multi-dimensional landslide database in order to facilitate change analysis on landslide areas. In the third year, this project will build a system for automatically extracting landslide information, as well as a multi-dimensional database and a monitoring system for landslide.