Urban green space system is an important component in complex natural ecosystems of subsystems.

城市绿地系统是城市复合生态系统中自然子系统的重要组成部分。

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Corresponding with the characters in urban design - "sociality" and "exoteric", public participation is the part and parcel in this complex system.

对应城市设计的“社会性”和“开放性”特征，公众参与是这个复杂体系的重要组成部分。

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Firstly, recent research of urban development, applications of complex adaptive system and urban price is summarized. The aim, object, frame, and expected results of this paper are stated.

综述了国内外在城市问题、复杂适应系统应用、城市地价问题等方面的研究现状，指出论文研究的目的、对象、研究框架；

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