Abstract:As urbanization level and population rise continuously, landslides, slides and other geological disasters strike very frequently, and in Jizhou District of Tianjin, landscape isolation and fragmentation are getting increasingly serious, biodiversity is on the decrease, and ecological values and service functions are being reduced. In this paper, Jizhou District of Tianjin was taken as a study area. Ecological source regions were selected considering many factors such as natural resources, climate regulation, water conservation, and biodiversity. Slope, relief, aspect, elevation, lithology type, road, fault, and type of land use were taken as landslide susceptibility factors. In virtue of an information value model, quantitative analysis was conducted on the relations between landslides and these susceptibility factors, based on which, landslide susceptibility index was then calculated using map algebra which was used to modify the basic ecological resistance plane was obtained through assignment of the type of land use. Then ecological corridors in the study area were extracted using the minimal cumulative resistance model, after which, an ecological network was constructed for this district. According to the results, the spatial distribution of the landslides in the study area were controlled by slope, elevation, relief and lithology type. The landslide susceptibility index obtained through calculation had relatively strong diagnosibility based on the verification. 23 ecological corridors were extracted, 129 km in total. Comparative analysis indicated that these ecological corridors basically kept away from highly susceptibility areas of landslide disasters and they could connect ecological source regions effectively. In terms of spatial distribution, ecological corridors in this area also showed significant differences. They were mainly distributed in the northern mountainous area of Jizhou district, where the density of ecological corridors was high, while ecological corridors in the central and southern areas were very sparse. The study results will provide Jizhou District of Tianjin with a scientific basis for optimizing its ecological network and constructing an ecological security pattern.