Spatial pattern evolution of port logistics enterprises in Shanghai metropolitan area

Based on the data of port logistics enterprises in Shanghai,and by means of GIS spatial analysis and mathematical statistics,etc.,this paper has discussed the spatial pattern and evolution rules of port logistics enterprises,and analyzed their key influencing factors.The research shows that,since the mid-1990s,the spatial pattern of port logistics enterprises in Shanghai has been generally featured by agglomeration and suburbanization,and central urban area remains the main area for gathering of port logistics enterprises.But here,the proportion of enterprises presents a declining trend,while that of suburban enterprises keeps rising.Different types of port logistics enterprises have obvious differences in spatial distribution,and precisely,transportation and warehousing enterprises at the low end of value chain are inclined to move towards suburbs,while comprehensive service enterprises at the high end of value chain are still distributed mainly in central urban areas,but they have presented the sign of suburbanization.The spatial pattern evolution of port logistics enterprises in Shanghai is subject to the comprehensive influences of the factors like port function evolution,comprehensive traffic network construction,commercial support conditions,urban planning and development policy,etc.