武汉市汉南区耕地地力评价

Evaluation on Cultivated Land Productivity of Hannan District in Wuhan City

为了反映武汉市汉南区耕地地力状况,在ArcGIS 9.3和Excel软件平台下,采用土壤图和土地利用现状图叠加的方法确定评价单元;选取立地条件、理化性状、土壤管理、剖面构型4个方面的9个评价因子,采用扬州市土壤肥料工作站开发的《县域耕地资源管理信息系统V3.2》对耕地地力进行综合评价。结果表明,汉南区的耕地地力水平分为五级,一等地占40.1%,二等地占34.1%,三等地占20.5%,四等地占4.0%,五等地占1.3%。

In order to clarify the land productivity of Hannan district in Wuhan city,the evaluation unit was determined using soil distribution map and overlap mehtod of land utilization map.9 evaluation indicators including land growing situation,physicochemical characteristics,soil management and profile situation were selected with the software platform of ArcGIS 9.3 and Excel.The productivity of cultivated land was comprehensively evaluated by National Cultivated Land soil Fertility and Quality Evaluation SystemV3.2 developed by soil and fertilizer station of Yangzhou city.The results showed that land productivity was classified into five grades,accounting for 40.1％,34.1％,20.5％,4.0％ and 1.3％ ranked from the first grade to fifth grade.