By building up tumor growth aerodynamic model,when tumor growth aerodynamic laws is research to find: The process of tunor increasing squares with economic growth of Gompertz growth parabola description;we further study that Gompertz growth parabola squares with population growth and regulation of Logistic growth parabola description.

This paper first analyzes the character and parameter demarcating of Logistic Curve and Picketage Model s S Curve, then puts forward a traffic forecasting method based on this two curve models.

The stem, leaf, and total biomass changes were represented well by logistic curves.

According to the Logistic curve,we point out three characteristics of technology progress,namely uncertainty,phase multification and technological complication.

Based on the ecological niche theory,the logistic curve and coevolution theory,The paper provides some solutions for the problems occurred during the development process of industrial clusters in China,to overcome the overlap of ecological niches of enter- prises within the clusters,and to lessen the conflicts between the economic development and the environment,etc.

The systems using three parameters Logistic model,in view of the value of data,the practice has proved that it can resolve the exposure problems in the current adaptive test.

The text analyzes the influencing factors of private forest’s cooperative management willingness, through constructing logistic regression model.