我国环渤海地区主要港口技术效率的时空差异分析

将DEA方法与Malmquist生产率指数法相结合,测度了2007—2010年我国环渤海地区9大港口的投入-产出效率。结果表明:研究期间,受金融危机的影响,我国环渤海地区主要港口总体的技术效率不佳,但庞大内需使其技术效率呈上升趋势,规模效率过低是导致其技术效率不佳的主要原因,港口的投入-产出效率在很大程度上与港口规模有关;从动态效率来看,9大港口的Malmquist生产率指数整体上呈上升趋势且其增长率为正,但个别港口的Malmquist生产率指数受金融危机的影响明显且有不同程度的下降;不同省份港口的Malmquist生产率指数存在明显差距;技术进步迟滞和规模效率不高是制约我国环渤海地区主要港口的Malmquist生产率指数进一步提高的主要因素。

Analysis on Spatial-Temporal Difference in Technical Efficiencies of Major Ports in Bohai Sea Area of China

Combing DEA method with Malmquist productivity index approach,this paper calculates the input-output efficiencies of nine ports in Bohai Sea region from 2007 to 2010. The result shows as follows：on the whole,influenced by financial crisis, the technical efficiency of main ports in Bohai Sea region is poor,but takes on a increasing trend because of huge domestic demand,and low scale efficiency is the reason causing poor technical efficiency,and the level of input-output efficiency is related to port scale; on the whole, the Malmquist productivity index of nine ports in Bohai Sea region takes on a rising trend,and the growth is positive;affected by financial crisis obviously,the growth rates of Malmquist productivity indexes of individual ports decline in different degrees; there exists the significant gap in the growth rates of Malmquist productivity indexes of ports in different provinces; slow technological progress and low scale efficiency are the main factors constraining the rise of Malmquist productivity indexes of ports in Bohai Sea reigon.