基于2002年和2007年北京市投入产出表数据，利用投入产出模型，分别计算并分析比较了北京市进出口商品结构及其支柱产业和瓶颈产业的匹配程度，以及北京市进出口商品结构合理度的变动情况。结果表明：2002-2007年，北京市出口商品结构朝着更加合理的方向和趋势发展，而进口商品结构不尽合理。从整体看，北京市进出口贸易在支持国民经济的发展中还没有充分发挥作用，进出口商品结构有待进一步优化。%Based on the data from 2002 and 2007 input-output table in Beijing , the input-output model is used to calculate and compare the matching degree of Beijing ’ s import and export commodity structure and its pillar industry and bottleneck in-dustry, as well as the fluctuation of import and export commodity structure reasonability .The results show from 2002 to 2007 Beijing’ s export commodity structure moves towards a more rational direction and trend , while import commodity structure is not reasonable enough .On the whole , the import and export has not been fully playing its role in supporting Beijing ’ s develop-ment of the national economy , and the import and export commodity structure needs to be further optimized .
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