Abstract
The land use changes are analyzed based on the interpretation of remote sensing image in the year of 1983, 1995, and 2009, and then an evaluation index system is established on the basis of “Hazard-State-Immune” model in Pingdingshan City, China. The entropy-weight method is used to determine the weights of index; the comprehensive index is used to evaluate the land ecological security in the study area. The results of the study show that the land ecological security is trending to obvious improvement after the gradual development (Common - Common – Good) in the past 30 years. And they also reveal the temporal-spatial distribution of land ecological security in this study area, which provides a foundation of ecological construction and the improvement of land ecological security.
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