以山西省11个地级市为评价单元,基于PSR模型构建综合评价指标体系,集成熵权法和灰色关联评价模型,对研究区2005—2015年生态安全综合指数、压力指数、状态指数和响应指数进行评价,并分析其时空演变规律。结果表明：2005—2015年研究区生态安全综合指数整体呈上升趋势,安全等级由Ⅱ级和Ⅲ级演变为Ⅳ级和Ⅴ级,区域生态环境改善显著但趋势有所放缓,人类活动对生态环境造成的压力整体较小且有所下降,在消除人类活动对生态环境负面影响方面采取了有效的措施,生态环境治理效果显著;山西省生态安全综合状况南北空间差异较为显著且有扩大的趋势,南部区域和中部区域生态环境安全程度整体优于北部区域,生态压力空间分布有由东西差异向中部与周围区域差异演变的趋势,生态环境状态中部区域与南部和北部区域差异进一步扩大,在消除人类活动对生态环境负面影响方面南部和中部区域采取的措施成效大于北部区域;在自然条件基础之上人类活动对生态环境的响应是研究区生态环境演变的内在机理。
The paper evaluates the ecological security comprehensive index, ecological pressure index, ecological state index and ecological response index of the research areas from 2005 to 2015, based on 11 prefecture-level city of Shanxi Province,based on PSR model, integrated entropy method and grey correlation model. It also analyses its spatial-temporal evolution regularity. The results showed the follows, the overall trend of ecological comprehensive index is rising, the safety level improved from level 2 and 3 to level 4 and 5, the improvement of regional ecological environment has a big improvement but its improvement has slowed down. The pressure of the ecological environment caused by human beings is small and it decreased. There are big improvements of the ecological environment, effective measures have been taken to eliminate the influence of human activities to on the ecological environment. There are big improvements in eco-environment management. The differences between the south and north of the ecological security is obvious and they will become bigger, the ecological security of the south and the middle area takes advantages of the north, the space distribution of ecological pressure had a trend that varies from the east and west to the middle areas and the surrounding areas. The ecology environment state had a trend varies from north and south distinction to the middle, the north and south, as for the efficiency of the elimination of human beings to the ecological environment , the results of the south and the middle area is better than the north. The safety condition of the ecological environment is the direct performance of the human being's response to the ecological environment, it is also the internal mechanism of the research areas' evolution of ecological environment.
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