| According to idle time and the degree of human disturbance, the rare earth tailing in Pingyuan, eastern Guangdong was divided into 3 regions: Ⅰarea, was idle for 10 years, no artificial measures to repair had been carried out until now; Ⅱarea, was idle for 10 years, local residents had used manure for soil improvement; Ⅲarea, idle time was 25~30 years, Vetiveria zizanioides and pinus massoniana were planted to restore the vegetation 15 years ago. The vegetation investigation on these areas was shown that the coverage was below 8%, there were only 3 species, 1 kind of life form (herb) in Ⅰarea; the coverage was about 57%~68%, there were 25 plant species, 3 kinds of life form (herb, shrub and bush) and could be divided into different herbaceous plant communities in Ⅱarea; the coverage was 86%, there was 12 plant species, 2 kinds of life form (herb and shrub) in Ⅲarea. Adding manure in the soil of tailing could improve soil fertility and water content, and made the soil be more suitable for the plant to settle down and increase the diversity significantly. P. massoniana, legumes, and ferns such as Pteris vittata, Blechnum orientale had the strong adaptability to the tailing soil, it was effective measures for accelerating the vegetation restoration in the rare earth mining area to establish the community of P. massoniana, legume plants and ferns in Eastern Guangdong province. |
