基于GIS的武威市凉州区甜菜种植适宜性分区

Regionalization of Suitabile Planting Sugarbeet in Wuwei Liangzhou District by GIS

选取14项与生产实际影响程度最大的评价因子,建立层次模型,通过地理信息系统(Geographic Information System,GIS)技术软件计算出适宜性分区及制作专题地图。结果表明:甜菜适宜性的影响程度从大到小依次为:有机质、耕层厚度、灌溉保证率、成土母质、海拔、全氮、有效磷、缓效钾、速效钾、灌溉模数、障碍层厚度、pH、地貌类型、有效硫。故而划分为3个适宜性区域:高度适宜性、适宜性和勉强适宜性区域,其种植面积分别占耕地面积的20.93%、61.85%和17.22%。

The data of 14 evaluation factors with large influence to production practice were used to establish hierarchy model, suitable planting sugarbeet regionalization were determined with thematic map drawn using geographic information system （GIS） technology software. Results showed that the influence degree for suitability to planting sugarbeet from big to small in the order： organic matter, plough layer thickness, probability of irrigation, soil parent material, altitude, total nitrogen, available phosphorus, slowly and rapidly available potassium, irrigation modulus, barrier layer thickness, pH, landform type, available sulphur. Three suitable regions were classified as high suitable planting area, suitable planting area and reluctant approximate suitable planting area accounts for 20.93%, 61.85% and 17.22% of agricultural acreage, respectively.