Taking Jiaozuo city as an example,evolution process of ecological security in Jiaozuo city during 1985 to 2014 is analyzed by using the emergy-ecological footprint model,the evolution law and development trend of ecological security in resource-based cities are quantitatively presented.The research demonstrates the change trend of ecological security in Jiaozuo city during 1985~2014 showed a"U"shape, Ecological deficit appeared in 1997,the deficit increased year by year,reached the maximum in 2010,after the deficit became smaller,the overall situation of ecological security in Jiaozuo city showed signs of improvement;fossil energy source land is a key factor affecting the ecological civilization construction in Jiaozuo city;through the government,enterprises and society's common ability,the ecological environment problems of the resource-based city can be effectively improved.%运用能值-生态足迹法,以1985~2014年为时间序列,通过追踪焦作市生态安全演变过程,定量呈现资源型城市生态安全演变规律和发展变化趋势,研究结论如下:1985~2014年焦作市生态安全演变趋势呈现出"U"字形,1997年出现生态赤字,之后逐年增大,2010年达到最大值,之后赤字开始缩小,生态安全整体状况呈现好转迹象;化石能源用地是影响焦作市生态安全建设的关键因素;资源型城市生态安全建设需政府、社会和企业的共同努力.
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