Study On The Resource And Spatial Distribution Of Macro-fungus In Foping National Nature Reserve,Shaanxi Province

-fungus is an important biological component for ecosystem and an important biological resource for human social development,which plays an important role in the cycle of ecosystem material,human social and economic development.Based on the study of the resources and spatial distribution of macro-fungus in Foping National Nature Reserve,the results show as follows:(1)There are 224 species of macro-fungus,belonging to 2 phyla,7 classes,18 orders,54 families and 116 genera.Among them,the ascomycete belongs to 4 classes,5 orders,8 families,11 genera and 15 species.The ascomycete belongs to 3 classes,13 orders,46 families,105 genera and 209 species.(2)There are 16 dominant families of macro-fungus in Foping National Nature Reserve,which include 68 genera and 150 species,accounting for 29.6% of the total number of families,58.6% of the total number of the genera and 67.0% of the total number of species.The dominant species(more than 4 species)include 11 genera and 60 species,accounting for 9.5% of the total number of the genera,and 26.8% of the total number of species.(3)Elevation has an important effect on the distribution of macro-fungus.The Richness,abundance and diversity of species presents a trend of increase at first and then decreases with the increases of altitude.There are the most macro-fungus species at an altitude of 1 300 m ~ 2 500 m area and at an altitude of more than 2,500 m,the macro-fungus species are relatively fewer which the least at an altitude of less than 1 300 m.(4)Because of the different biological and ecological habits of different macro-fungus,there are obvious differences in the nutrient matrices.Therefore,different macro-fungus species are distributed in different forest community types.According to the survey,there are 102 species of macro-fungus in the pine oak mixed forest which belongs to 36 families and 64 genera,108 species of macro-fungus in the pine oak mixed forest which belongs to 38 families and 66 genera,55 species of macro-fungus in the pine oak mixed forest which belongs to 28 families and 38 genera,and 59 species of macro-fungus in the pine oak mixed forest which belongs to 25 families and 41 genera.(5)According to their nutritional way,there are 16 species of macro-fungus which are parasitic in the plant,accounting for 7.1% of the macro-fungus species in Foping National Nature Reserve;165 species of saprophytic macro-fungus in the region which accounting for 73.7% of the macro-fungus species;and 43 species of symbiotic bacteria in this area,accounting for 19.2% of the macro-fungus species.(6)According to the economic value,the edible fungi accounting for 46.4% of the total macro-fungus in this area which are 104 species.And there are 61 and 13 kinds of medicinal bacteria and germs which accounting for 27.2% and 5.8% of the total number of Macro-fungus in the region,respectively...