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以甘肃省天祝藏族自治县耕地地力调查数据为基础,在GIS的支持下,采用土壤分布图、农用地地块图、灌溉分区图、地貌类型分区图、行政区划图叠置的方法划分评价单元,系统聚类与Delphi法相结合筛选参评因素,以层次分析法(AHP)确定其权重,模糊评判法确定耕地地力等级等方法,将县域耕地地力划分为5个等级,并针对不同等级耕地的属性特征提出了合理利用和改良建议。
Based on the survey data of cultivated land productivity in Tianzhu Tibetan Autonomous County, Gansu Province, with the support of GIS, this paper divides the evaluation unit by the methods of soil distribution map, agricultural land map, irrigated area map, topographic type map and administrative map overlay , System clustering and Delphi method were combined to select the factors of assessment, AHP was used to determine their weights, and fuzzy evaluation method was used to determine the grade of arable land. The land productivity of arable land in county was divided into five grades. According to the attributes of cultivated land Features proposed rational use and improvement suggestions.