中文摘要：

区域间的净贸易量及其波动与区域经济增长及波动间的关系乃是十分密切的。区域经济竞争力强弱和贸易条件的优劣对比决定了区域间净贸易量的基本格局。同时，与对国外贸易波动和经济增长的关系异常复杂一样，区域间净贸易量变化对区域经济的影响也十分复杂：从短期看，顺差扩大与逆差减小有利于从外部需求的角度去增强本区域的经济增长动力；从长期看，则短期的贸易逆差扩大有可能从增强本区域供给能力的角度去增强区域经济的发展后劲。

英文摘要：

The net trade volume and its fluctuation among regions have close relationship with the increase of regional economy and its fluctuation. The basic pattern of net trade volume among regions is decided by the competitiveness of regional economy and trade terms and conditions. Just as the relationship between the fluctuation of foreign trade and economic growth, the influence of the change of net trade volume among regions on regional economy is very complex： in the short term, the increase of surplus and the decrease of deficit are beneficial to increase the economic power of the region from the angle of external demand;in the long term, the increase of trade deficit in short period of time may increase the development strength of regional economy from the angle of strengthening the supply capacity of the region.