Comprehensive Evaluation on the Circulation Function of Agro ecosystems (Part 2)

The mathematical model which describes the relationship between dynamic and resistant factors in system circulation processes has been adopted for the analysis and calculation of circulation functions of five different agro ecosystems. The coefficient K of the model has been found to be appropriate for conducting comprehensive evaluation on circulation functions of agro ecosystems. The value of K depends on the other related parameters. Those parameters of different levels composed a simple and practical index system for comprehensive evaluation of agro ecosystem.