Species diversity of arbuscular mycorrizal fungi in Jinding Pb-Zn mining area of Lanping, Yunnan
云南金顶铅锌矿区丛枝菌根真菌多样性的研究

The species diversity of arbuscular mycorrizal fungi (AMF) in Jinding Pb-Zn mining area of Lanping, Yunnan, was investigated. Thirty-six species belonging to five genera were isolated and identified from 83 rhizosphere soil samples of 32 plant species, including 5 species of Acaulospora, 2 species of Entrophospora, 1 species of Gigaspora, 24 species of Glomus and 4 species of Scutellospora. Acaulospora and Glomus were the dominant genera and Glomus walkeri was new record in China. Glomus claroideum, G. clarum, G. constrictium, G. geosporum, G. mossaea, G. pansihalos and G. verruculosum were dominant in Jinding Pb-Zn mining area. AMF spore density ranged from 495 to 11175 per 100g soil with an average of 3368±291 (SE, standard error), and the species richness in each plant sample was 2-20 with an average of 11.5. The relatively high spore density and species richness of AMF in the rhizosphere soils of Jinding Pb-Zn mining area suggested that AMF have a strong tolerance to soil heavy metal pollution.