A comprehensive evaluation index system for soil fertility based on soil physical,chemical and biological properties were developed.With the system,we than evaluated the soil integrated fertility of the succession series of the plant communities in Tiantong,Ningbo,Zhejiang Province.The values of soil integrated fertility index of bare land,shrub forest, Pinus massoniana,P massoniana+Schima superba,S.superba, Castanopsis fagasii+S.superba and C.fagasii forest were 0 048、0 324、0 474...