中文摘要：

在辽宁省凌源市运用GIS技术开展了县域尺度的耕地生态环境安全评价研究，通过层次分析法确定各指标权重和分值，最终划分出凌源市耕地生态安全等级并确定了其空间分布情况。结果表明，凌源市耕地生态安全状况总体良好，一、二等地的面积占耕地总面积的33．2％，三、四等地的面积占耕地总面积的46.3％，五等地面积占耕地总面积20．5％。研究结果对凌源市耕地资源的可持续利用、农业发展和环境保护工作有一定的积极意义，对县域小尺度耕地生态环境安全评价工作也有一定的参考作用。

英文摘要：

The article studied the GIS technology application in ecological environment security appraisal of the cultivated land Lingyuan County in Liaoning province. Spatial distribution of the ecological environment security of the cultivated land was classified through the method of analytic hierarchy process （AHP）. The results shows that the ecological environment security of cultivated land in Lingyuan County was generally good. The first class and the second class are the 33.2 percent of the total area, the third class and the fourth class are 46.3 percent of the total, and the fifth class is only 20.5%. This study can provide necessary and helpful reference for the GIS application in the cultivated land ecological environment security appraisal in county level, and for the sustainable use of cultivated land resources in Lingyuan county, agricultural development and environmental protection.