Patterns of Built-up Area Spatial Expansion at Chongqing Yubei District

The construction land expansion is an obvious characteristic of metropolitan area morphological variation in urbanization process,and the laws,processes and features is a main measure criteria of urban development level and pattern.Based on two decades of built-up area spatial-temporal distribution at Yubei District,applies remote sensing and geographic information system technology to analyze the area,speed,direction,pattern of built-up area expansion,and expansion of road construction area,then reveals the the laws,processes and features of built-up areas and road construction extension at Yubei district,which provide a scientific reference for region's urban planning,land and water resources management and macro-control policy.