Figure 3. CCA ordination biplot of 16 quadrats and environmental factors for plant communities in the reclaimed mining area.

Arrows indicate the direction and magnitude of measurable variables associated with plant community structures. Circle, Star, Diamond and Up-triangle symbol types respectively represent Lotus corniculatus, Medicago sativa, Pinus tabulaeformis and Salix matsudana–Sabina chinensis mixed forest. White, green, blue and black respectively represent no, inorganic, organic and a combination of inorganic and organic fertilizer added to soils. BD, LC1, and LC2 are bulk density, soil labile pool carbon 1 and 2, respectively.