Abstract: In this paper authors put forward the ecological potential model of the underground ecological field of Aeurolepidium chinense population by the field experiments and thoretical analysis. There are the some analysis to the potential values in different population density conditions, as well as the seasonal changes for the population. Author also gave the graphic explaination for the two-dimensional behavior graphs drawn by the computer. The results showed that the ecological potential is related to plant growth rate, resource utilization effidency, and root biomass, radius and the interaction distances.

Key words: Ecological field, Potential, Aneurolepidium chinense