中文摘要：

以旅顺口区土地利用现状图、土壤图、地形图等图件资料和土地自然质量、土地利用、土地经济相关统计资料为基础，运用GIS软件的空间叠加分析功能、属性查询功能和制图技术对旅顺口区农用地分等定级进行研究。在进行分等定级研究工作中，运用叠置法划分分等单元；采用特尔斐法确定分等因素及其权重大小；利用指定作物来计算土地利用系数和土地经济系数；在划分农用地等别时使用等间距法，最后生成农用地自然质量等别图、利用等别图和经济等别图。最终获得的旅顺口区农用地分等结果显示，旅顺口区自然质量等为8等至12等，共5个等别，其中11等占参与农用地分等总面积的40．79％，10等占38．79％，8等、12等、9等次之；利用等为11等至13等，12等所占比例最大，达到80．38％，13等最少；经济等别分为12等地和13等地，12等占绝大部分；由此得出旅顺口区农用地等级水平处于中低水平。

英文摘要：

GIS technologies of the spatial overlay analysis function, the attribute query function and map drawing technology were used in this paper to study on agricultural land classification in Lushunkou District. GIS technol were based on relevant maps such as the sources of the land use status map, the soil map, the topographic map and the relevant statistical data such as the land natural quality data, land use and land economic statistical data. The classification unit was divided using the method of overlay analysis, and the classification factors and their weights were deter mined by the Delphi method. The coefficients of land use and land economy were calculated by the method of equal space. At last, it produced the natural quality classification map of agricultural land, the classifi- cation map of land use and the classification map of land economic. The results showed that： the natural quality classification of Lushunkou District had 5 grades from the class 8 to 12. The class 11 and 10 accounted for 40. 79% and 38.79% of the total area of agricultural land classification, respectively. The land use classification was divided from class 11 to 13, of which class 12 accounted for the largest proportion of 80. 38%, and class 13 was the least. The economic classification was divided from class 12 to class 13, of which class 12 accounted for the majority. Thus it concluded that the agricultural land grade level of Lushunkou District was in the middle and lower level.