Abstract:

In order to understand the current situation of county cultivated land, provide the scientific basis for the efficient and sustainable use of arable cultivated land resources, based on GIS technology, using the scale of 1:50000 administrative zoning, 1and utilization map and oil distribution map into the evaluation method for unit, this research selection of site conditions, physical and chemical properties, soil management were three aspects influencing factors and establish the cultivated land fertility evaluation system and its model, expert scoring and Delphi method were used to determine the influence factor of membership functions by using analytic hierarchy process and fuzzy mathematical method to evaluate the Farmland Productivity in Pingchang County, and analyzed the space distribution. The results showed that, 40952 hm2 of arable land, the fertility of the grade first to sixth account for 8.2%, 20.3%, 19.6%, 35.4%, 8.2%, 8.3%, which were in line with the 1oca1 situation of the county.