Abstract:

In order to clarify environmental adaptation mechanism of Cenococcum geophilum, the zonal vegetation in Inner Mongolia was used as sample, Cenococcum geophilum’s natural infection rate of the areas of different forest types, vegetation types, contents change of soil nutrient were investigated and determined. The relationships between the natural infection rate, vegetation, and soil factors, were discussed. The result showed that natural infection rate of Cenococcum geophilum infected in Larix gmelinii in Daxing’anling, Pinus tabulaeformis in Black River, Ostryops’s davidiana in Daqing Mountain, Betula platyphylla in Ural Mountain, Picea crassifolia in Helan Mountain were more than 30%. Natural infection rate of Cenococcum geophilum had some differences between Pinus tabulaeformis in different forest areas. The natural infection rate of Cenococcum geophilum had a significant positive correlation with rhizosphere soil organic matter, total nitrogen, and had a very significant positive correlation with available P.