通过宣城地区地貌、土壤类型、有机质、有效积温、降水等 5大自然因素对土壤的影响分析 ,选择以行政乡为评价单位的同时 ,采用各行政乡主要耕作土壤和主要林业用地的土壤亚类作为基本统计单位 ,对宣城地区土地适宜性进行了综合评价 ,评定出宜农、宜农牧、宜林牧、宜林 4大类 ,并从土地适宜性评价角度提出 2 1世纪初全区土地利用结构调整指标。 Through the analysis of the influence of five natural factors such as landform, soil type, organic matter, effective accumulated temperature and precipitation on the soil in Xuancheng area, we select the administrative villages as the evaluation units and adopt the soil sub-types of main cultivated soils and major forestry land in each administrative village As the basic statistical units, the comprehensive evaluation of the suitability of the land in Xuancheng area was carried out, and the four major categories of Yixin, Yichang, Yilin, Yulin and Yilin were evaluated. From the perspective of land suitability evaluation, District land use structure adjustment index.