中文摘要：

土地是人类最重要的生活和生产资料,土地生态安全与人类的生存和发展有着密切的联系。为解决土地生态安全评价中信息的缺乏和研究者的主观问题。运用熵权物元分析法构建评价指标体系、权重、经典域和节域,借助＂经济-自然-社会＂模式建立武威市土地生态安全评价模型,计算评价指标关联度。结果表明：1）绿洲面积覆盖率、荒漠化程度、森林覆盖率、人均水资源量、水土流失治理率、土地利用多样性指数、贫困人口比例、耕地有效灌溉率、土地利用强度、人均耕地、居民消费者水平等指标是影响土地生态安全的主要因素;2）2001~2013年武威市土地生态安全处于较安全水平,并且土地生态安全水平整体上呈上升趋势;3）武威市2001~2004年的土地生态安全处于临界安全水平,2005~2013年的土地生态安全处于较安全水平。熵权物元模型较为准确的反应土地生态安全等级,对武威市土地生态安全改善有一定的指导意义。

英文摘要：

Land is the most important to human life and food production. The land ecological safety is closely related with human development. To solve the problem of information lack in land ecological security evaluation this paper used the analysis method of entropy weight matter-element to build an evaluation index system, including the parameters of evaluation index weight, classical domain and joint domain. The land ecological security evaluation model was built based on the ＂economy-nature-society＂ model. The results showed that： 1） The main factors,including the oasis area of coverage, degree of desertification, forest coverage rate, water resources per capita, soil and water loss control rate, land use diversity index, poverty rate, effective irrigation rate of arable land, land use intensity,arable land per capita, andconsumer level index, all influenced the land ecological security; 2） Land ecological security was in a relatively safe level but showed increasing trend as a whole in 2001-2013 in Wei City; 3） Land ecological security was in a critical level in 2001-2004 and was in a safer level in 2005-2013 in Wuwei City. Entropy weight matter-element model may accurately reflect the land ecological security level.