Abstract: The distribution areas of the wild Pseudostellaria heterophylla in Mt Huangfu are behind the Mituo Temple,in the south west of forestry centre and the southeast sloping field of Northern-General Mountain. Nine plots selected randomly from above areas,the illumination, temperature and humidity of air, temperature, humidity, structure, color and pH value of soil every half an hour were measured. A detailed investigation and analysis were given about the eco environment of the wild P. heterophylla in the Mt. Huangfu to provide the foundation for protection and utilization of idioplasmic resources.

Key words: Karst region, De-farming and reafforestation, Soil fertility quality, Comprehensive evaluation