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中文摘要：
城市化过程的城区形态变异是以建设用地的向外扩展为显著特征的,而空间扩展的规律、过程和特征是衡量城市化发展水平和模式的主要标准。研究基于近二十年来重庆市渝北建成区时空分布情况,应用遥感与地理信息系统技术,分析了渝北建成区空间扩展的面积、速率、方向、模式以及区内的道路建设扩展情况,揭示了渝北建成区以及道路建设空间扩展的规律、过程和特征,为该区域的城市规划、城市水土资源管理和宏观调控决策等提供了科学的依据。
英文摘要：
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.
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