The Wood Rotting Fungi And Soil Fungi Of The Two Dominate Forest Types In Songshan

Diverisities and resources study on wood-rotting fungi and soil fungi of Songshan Mts. in YanQing County, Beijing, were carried out based on the specimens and samples collected from nine main forests of Pinus and Quercus during 2003-2007. The specimens were made by loans from IFP (Institute of Applied Ecology, Chinese Academy of Sciences). The methods of forest ecology, microorganism ecology and modern taxonomy were employed in the studies. The illustrated descriptions of studied species were given, and the hosts, ecological pictures, rotten types, specimens information and culture characters were provided. The distribution of wood-rotting fungi in different ecological environment factors, including forest type, tree species, altitude, were investigated. In this study, 34 species of wood-rotting fungi belongs to Agaricomycetes, Basidiomycota were identified. Among them, one genus belongs to one family are in Agaricales, and 26 genera belong to 3 families are in Polyporales. One species, Cotylidia harmandii (Lloyd) D.A. Reid, are new to Chinese fungal flora. 41 strains of wood-rotting fungi were obtained and reserved in The Lab. of Forest Pathology of Beijing Forest University.The relationship between Colony Forming Units and some charactors of soil under natural-manmade Pinus forest and Quercus forest were studied. The distribution effect factors of soil fungi were analysed. 184 soil fungi strains were obtained and reserved in The Lab. of Forest Pathology of Beijing Forest University. Among them, 66 strains appear in natural Pine forest, 17 species and 42 genera were identified; 74 strains appear in man-made Pine forest, 16 species and 48 genera were identified; 143 strains appear in Quercus forest, 18 species and 92 genera were identified. Between the natural and man-made Pine forest, there are 4 genera not appear in man-made Pine forest, 3 genera not appear in natural Pine forest, and the number of colony of natural Pine forest is more than man-made forest's. Between the Pine forest and Quercus forest, there are 3 genera not appear in Pine forest, 3 genera not appear in Quercus forest, 24 genera appear in both of them, and 5 genera appear frequently. Results show the pH value of soil are descending from Quercus forest, man-made Pine forest to natural Pine forest. The number of distribution speices of soil fungi are affected mostly by the samples depth and less than pH value.