Table 11. Changes of species, populations and species diversity of the three plant communities in Mt. Cheongryang, Incheon

Type Community No. of species No. of individual Species diversity
Natural forest Quercus mongolica ‒ 1 ‒ 199 + 0.1584
Artificial forest Pinus rigida ‒ 1 ‒ 337 + 0.0638
Robinia pseudoacacia ‒ 1 ‒ 57 + 0.0375