Abstract: Based on the formation mechanisms of the main eco-environmental problems in Liaoning Province, this paper studied the regional differentiation patterns of ecosystem sensitivity, and analyzed the sensitivities of manifold eco-environmental problems in the Province. The results showed that the areas of high, medium, and low ecosystem sensitivity in the Province occupied 34%, 62.66%, and 3.34 % of its total terrestrial area, respectively. High ecosystem sensitivity area mainly distributed in east Liaoning mountainous region, Liaodong peninsula, west Liaoning hilly region, northwest Liaoning, Liurao area, and Dawa County, among which, east Liaoning mountainous region, Liaodong peninsula and west Liaoning hilly region were of high sensitivity on soil erosion, northwest Liaoning and Liurao area were of high tenderness on desertification, and Dawa County was delicate in soil salinization.

Key words: Hefei outskirts, Non irrigated flatland, Soil nutrient loss ways, Physical erosion, Chemical erosion