一、都市区的发展趋势都市区是城市的功能地域概念,是与中心城市具有密切社会经济联系的、以非农业经济为主的县域单元间的组合。在一日的周期里,都市区为人们提供居住、工作、购物、医疗、游憩等基本功能。在西方国家,这是普遍使用的城市地域概念和统计概念。上世纪50年代以来 I. Development Trend of Metropolitan Area Metropolitan area is the concept of functional area of ​​a city, and it is a combination of county units with a close social and economic relationship with the central city and a non-agricultural economy. During the one-day cycle, metropolitan areas provide people with the basic functions of housing, work, shopping, medical care and recreation. In Western countries, this is a commonly used concept of urban geography and statistics. Since the 1950s