基于GIS的醴陵市耕地地力评价研究  

Evaluation of Farmland Productivity in Liling City Using GIS

作　　者：苗霄霖[1] 周卫军[1] 李溦[1] 

机构地区：[1]湖南农业大学资源环境学院,湖南长沙410128

出　　处：《安徽农业科学》2015年第15期294-297,共4页Journal of Anhui Agricultural Sciences

摘　　要：依托GIS技术,利用土壤图、土地利用现状图和行政区划图叠加制作评价单元,采用特尔斐法从立地条件、理化性状、土壤管理、刨面形状4个方面取10个因子构建评价指标体系,运用AHP和模糊综合数学法对醴陵市耕地地力进行评价。结果表明：醴陵市耕地中,一~七级耕地面积比例分别占1.64%、15.96%、29.31%、11.38%、23.31%、17.07%、1.33%,耕地地力等级的高低与土壤类型,基础设施密切相关,评价结果对土壤改良具有指导意义。Based on the geographic information system（GIS）,with the superposition of soil distribution map,land utilization map and administrative map as evaluation unit,using Delphi method,ten factors were selected to construct evaluation index system from four aspects of site conditions,physicochemical property,soil management and covering profile situation.AHP method and fuzzy mathematical method were used to evaluate cultivated land fertility in Liling City.The results showed that the farmland productivity in Li Ling City could be divided into 7 degrades,and the areas of degrades 1-7 accounted for 1.64%,15.96%,29.31%,11.38%,23.31%,17.07%,1.33% of the total arable land areas respectively.The land fertility level was in close relations to soil type and infrastructure conditions,which provided practical reference for improvement of middle-low soil.

关 键 词：GIS 耕地地力 醴陵市 

分 类 号：S127[农业科学—农业基础科学]