基于ComGIS的农用地分等单元及属性数据获取方法研究

以湖北省荆州市荆州区农用地分等评价为例，提出了在基于组件式地理信息系统(ComGIS)的农用地评价中，以矢量化并经校正后的土地利用现状图、土壤图、地貌图进行叠加产生的土地资源类型图作为农用地评价单元图，并通过与样点综合评价因素图层进行叠置分析来获取评价单元属性数据的新思路。在实际工作中取得了良好的效果，减少了工作量，提高了分等结果的科学性。

Research on Determining Evaluation Units and Obtaining Attributive Data of Cultivated Land Classification Based on ComGIS

A new method of obtaining cultivated land evaluation units is proposed by overlaying soil map, physiognomy map and land using map with ComGIS (ALEIS) , which is regarded as map of cropland resource type. The attributive datasets have also been achieved by overlaying the coverage of cropland resource type map with the coverage of synthetic factors of cultivated land. At the same time, a case study is given in Jingzhou Area of Hubei Province. The results indicate that this method reduces working load and enhances result reliability.