Abstract:With the original data as basis,the cultivated land quality in Yidu County,Hubei Province was evaluated with the aid of GIS and the fuzzy matte-relement proximity cluster analysis model.The procedure of the evaluation goes:(1) Use the principal component analysis method to determine factors affecting cultivated land quality;(2) Extract correlatographs with the aid of ArcGIS vectorization,put them under spatial analysis and use the multi-map superimposition method to define evaluation units and extract unit attribute data;(3) Based on membership functions of the evaluation factors,calculate weight coefficients of the evaluation factors and proximity of the evaluation units with the fuzzy matter-element proximity cluster analysis model,and sort the cultivated lands into various quality levels.At the same time,120 samples were collected randomly to verify veracity of the results.The results indicate that the cultivated land in this area is medium in quality and can sorted into 6 levels,account ing for 12.96%,30.37%,31.71%,16.16%,7.14% and 1.66%,respectively,which is roughly in accord with the actual situation.