A Study on Ecological Vulnerability Assessment in Shanghai Based on Land Use

Taking Shanghai as the study area, this paper evaluates the ecological vulnerability in shanghai based on land use. We select the fragmentation fractal dimension, perimeter-area fractal dimension and aggregation index, construct brightness temperature index, vegetation cover index and ecosystem resilience index, establishing a type of land use in Shanghai evaluation index system of ecological vulnerability. We use the gray correlation to determine the weight and get the data of land use vulnerability and ecological vulnerability. Using ordinary Kriging method draw up ecological vulnerability grade map of Shanghai, and the ecological vulnerability of the spatial autocorrelation analysis revealed the ecological study of the spatial distribution of vulnerability. The results shows that: (1) The highest vulnerability is urban land types, followed by unused land; (2) The overall trend shows that the ecological vulnerability decreases from the center of the city to the suburbs, and also some high ecological vulnerability areas have formed in the suburbs (3) Spatial autocorrelation analysis of ecological vulnerability shows that the ecological vulnerability presents a relatively high correlation and spatial aggregation; high ecological vulnerability associates mainly in the center of the city and coastal beaches; Areas with low ecological vulnerable correlation are mainly in the suburbs.