Wenchuan earthquake occurred in the area which is full of high mountain and deep valley in west State w:st="on">Sichuan, as a result the weak ecology geological environment is heavily destroyed. Eco-geological environment is one of the foundations to sustainable development for human, and the well evaluation for the eco-geological environment and its impact on the quality of the ecological effects of landscape pattern is an important basis for post-quake restoration and reconstruction. Some work has been done and some achievement has been gained by predecessors. However, there are few comprehensive and quantitative studies on eco-geological environment and tempo-spatial change of ecological landscape pattern in mountain-valley areas by the technology of remote sensing and GIS, and especially, the comparison analysis of earthquake areas before and after the disaster using high space resolution satellite remote images and aviation images has not yet been found in scientific journal. This paper proposed the ideas how to evaluate the eco-geological environment and the methods how to research tempo-spatial change of ecological landscape pattern by RS and GIS in the Taoguan of Wenchuan County, and also extracted the eco-geological factors and the information about the tempo-spatial distribution of landscape based on high space resolution satellite remote sensed images, aviation images, topographic map after the earthquake. Above all, this paper analyzed the ecological effects that caused by tempo-spatial change of landscape pattern, and set up the model of weighted integrated index method to calculate the integrated index of eco-geological environment. Based on the evaluation criteria, co-geological environment rank maps and damages distributing maps were made before and after the earthquake. At last, this paper evaluated the geo-ecological fragility based on the co-geological environment and the ecological landscape, which provided a strong theoretical basis for the people inhabitation location and economic development.
