The five-year dynamics of the plant-soil system were monitored in the coal gangue yard at Sima Coal Mine of Luan Group,Changzhi,Shanxi,China,from 2009 to 2013.The fixed plots were established to use spatial dynamics to represent temporal changes.The assessment was made on the ecological performance of the herbal communities at the early phase of reclamation after reforestation with PCA and AHP-FCE.There were 24 indexes involved in this study,including basic community characteristic,soil physical property and soil chemical property.