System Variable Analysis on Development Stages of Urban Agriculture in Large Cities

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外文摘要：China's urban agricultural development takes on stage evolution,and functional structure,customer structure,industrial organization, innovation activity,spatial form and industrial value of each stage has significant difference.Using the system variable analysis method, this paper established the urban agricultural development system including six types of functional variables.On the basis of summarizing stage characteristics,it analyzed reasons for stage characteristics focusing on four key variables,i.e.cost,efficiency,connection,and risk.Finally, it came up with recommendations for promoting China's urban agricultural development with the aid of stage development rules.

外文关键词：

Urban agricultureStage characteristicsState evolutionSystem variable analysis

作者：

Min ZHANG、Fengjun LU、Runlian MIAO、Yan JIN

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作者单位：

Beijing Institute of Science and Technology Information,Beijing 100044,China

College of Economics and Management,China Agricultural University, Beijing 100083,China

基金：

Supported by Philosophy and Social Science Planning Project of BeijingKey Project of National Soft Science Research PlanSelf-supporting Project of Beijing Institute of Science and technology Information

项目编号：

12JGC1052013GXS4D097

出版年：

2014

ISSN：

年,卷(期)：2014.6(11)

参考文献量4