The Resource Investigation Of Ectomycorrhiza Fungi And The Research Of Mycorrhiza Ecology In Daqingshan

To increase the survive rate of forestation in the Daqingshan, the forestation with mycorrhizal technology becomes a very important method. At the present time , to know the status of Ectomycorrhiza Fungi (ECMF) and mycorrhizal ecological characteristic in the Daqingshan has great sense to the application of mycorrhiza biological technology and the exploitation of local ECMF epiphytes resource .From 2002.9 to 2004.4, I made an comprehensive and systematical survey to the outer-grow mycorrhizal resource and ecology in the Daqingshan. Survey zones are selected according to different altitude .different slope, different forest type ,different vegetation in the representative areas in the Daqingshan . And an identity is made about the characteristic of fruit bodies ,spore and mycorrhizal configuration . We finally got that the ECMF epiphytes in the Daqingshan mainly belong to 18 family , 41 genera, 165 species account for 27.2% in the known outer-grow ECMF epiphytes in our nation .There are 5 family, 6 genera , 8 species in the ascus epiphytes subphylum and 13 family , 35 genera, 157 species in burden epiphytes subphylum. 54species of them are new recorded in inner Mongolia .5of them are suspect species. Boletaceae , Russulaceae , Tricholomataceae , Cortinariaceae are ordinary species .The outer-grow ECMF epiphytes of Daqingshan distribute in the altituderange of 1200m ~1500m. in June ,they come out ; In the Daqingshan,a lot of tree accrete with outer-grow ECMF .They are Betula platyphylla Suks, Piuns tabulaeformis Carr, Larix sp, Quercus mongolica Turcz. The outer-grow ECMF epiphytes mainly distribute in middle part or under part of 30degree to 50 degree - shade slope and open slope .When the coverdegree bigger than 0.7, the kinds of ECMF epiphytess become more as to soil environment ,most outer-grow ECMF epiphytes like acid environment. the Boletus > Russula ?, Cortinarius > Lactarius have an obvious decrease effect on the PH value. The result of mensuration of soil nutrient element confirms that the growth of ECMF epiphytes can obviously increase the content of total nitrogen n rapid available nitrogen > rapid available potassiunu rapid available phosphorus in their soil environment ^specially rapid available potassium the relativity between the growth of ECMF epiphytes and interroot organic element and total nitrogen, total nitrogen and rapid available nitrogen is notable, account to the whole level of soil nutrient demand ,the outer-grow ECMF epiphytes can improve the soil nutrient especially between families.