现有的土地评价工作侧重于土地应用功能，而对土地生态环境功能的考虑比较少。为了探索考虑生态环境功能的土地质量评价方法,选择生态环境条件脆弱的泸定县为研究区，在土地利用类型的基础上，加入坡度、坡向、高程等地形要素指标，建立土地生态环境质量评价指标体系，并应用GIS、RS和层次分析(AHP)技术获取评价因子专题图，经过图形叠置生成泸定县土地生态环境质量等级图。评价结果显示，影响研究区土地生态环境质量的主要因素为坡度、降水量、高程、植被指数和土壤质地等。经过对泸定县土地生态环境质量评价等级与地貌类型、土地利用方式及生态环境因素进行对比分析，认为评价结果与现实条件吻合较好。

The current soil assessment method focuses on the application function of soil, while the ecological environment function is not largely considered. In order to examine the soil quality assessment method in consideration of ecological environment function, an ecological environment quality assessment index system was developed to evaluate the soil quality of Luding County, The conditions of terrain and geomorphology in plateau area are key factors influencing soil preservation and land developing methods, and thus make great effects on soil ecological environmental quality (SEEA). This paper presents a method to evaluate the soil quality for Luding county, a typically geological environmental vulnerable district of ecological environment. The system was based on, based on land use the consideration in meeting the demand of soil ecological environmental preservation. The study and incorporated the topographic factors such as slope, aspect, and elevation as well as the common variables relating with soil development into the assessment index system. GIS, RS, and Analytic Hierarchy Process (AHP) technique were employed to analysis the spatial data and form the thematic maps ofobtain the thematic maps of evaluation indexes assessment factors, which were overlaid to generate the soil ecological environment quality map of Luding County. The ultimate soil quality level map was obtained through graphical overlaying process. The results indicated the substantial main factors affecting the soil ecological environment quality in the study area includecorrelating with the SEEA are the slope, precipitation, elevation, vegetation index, and soil texture, etc.. Comparing tThe soil ecological environment quality assessment results of SEEAwere compared with the topography, land use, and ecological environment factors, which suggested that the assessment results are in accordance with the actualreal conditions in the study area, a well matching result between the two can be easily found.

中国地质科学院水文地质环境地质研究所基本科研业务费（SK201305）、国土资源大调查项目“全国主要城市环境地质综合评价”（1212010535501）和中国地质调查局 “城市群地质环境信息平台建设”（1212011220025）联合资助。