Research on Relationship between Logistics Indsustry and Economic Increasing in Jiangsu

The problems existingin selection ofindexes and data while studyingthe relationship between logistics industryand economyin-creasing.The relationship model between logistics industryand regional economyis established,and the relationship between logistics industryin Jiangsu Province and the national economy from 1990 to 2007 is analyzed.The result shows that the increase of logistics capacity X is accompnied with the change of time Tin the formofthree-polynomial and there is alsothree-polynomial between GDP in Jiangsu Province and the capacityof logistics X.There is an interactive causal relationship between the capacityoflogistics and GDP and the logistics industryneeds tobe developed quicklyin order to support the increasing of Jiangsu economy.