Ecological risks of urbanization processes of some towns(taking Weishan Town as an example,located in the middle part of Zhejiang Province,a rapid developing area of towns)were assessed using the ecological method of the variable interrelation.The results indicate that the incidence of “civilization diseases” such as cancer and hypertension has been year after year increasing with a rise in urbanization levels.The trend was related to the density of population (including agricultural population and nonagri...