Urban fringe area ecological vulnerability space-time evolution research: the case of Ganjingzi District, Dalian

Based on the land use data of 1998 and the remote sensing data of 2003, 2007, and 2013 SPOT5, the Ecological Vulnerability Index (EVI) value of the communities was calculated using the Exposure Susceptibility Coping Capacity (ESC) model combined with spatial analysis and linear weighting, and the ecological vulnerability of the Ganjingzi area was divided into five grades. To establish the evaluation index system, the change slope was calculated using the multiplication method. When the F value was significant, the change slope and significance were divided into four grades. Temporal distribution of ecological fragility in Ganjingzi District of Dalian, from 1998 to 2013, was also studied. The results were as folloes: (1) From the perspective of the distribution characteristics of ecological vulnerability in urban fringe areas, the ecological environment of the urban fringe area showed the same level of aggregation, and the neighborhood adjacent to the Shahekou District showed a distinct radial pattern, with obvious differences between the east and the west. (2) From the