并列题名：Studies on the moderation of urban development scale in the main grain-producing cities Studies on the moderation of urban development scale in the main grain-producing cities 并列题名：Study on the benefit compensation mechanism in the main grain producing areas 并列题名：Study on the impacts of urban development to its tourism efficiency 并列题名：Towards new ways of urban redevelopment in an age of shrinking cities 并列题名：Studies on the econcomics and development strategies of the undeveloped regions