现阶段中国市场分割程度的测算——以全国猪肉市场为例

Measuring the Current Market Segmentation of China——Evidence from the Pork Market

主要运用全国各地的猪肉市场的价格,来测算全国各地方保护程度的大小。通过模型分析发现中国各地区之间猪肉市场的价格差异与全国各地的距离、各地的收入水平之间的相关程度不是很大。这说明中国各地区的价格人为性较高,也就是说,各地区的地方保护程度比较严重。利用各地区猪肉价格的时间序列作协整检验结果发现,76.85%的省际之间的猪肉价格不存在协整关系,但是,通过计算市场联系指数发现,在短期内,各地区之间的价格与中心市场(辽宁省)的价格还是存在一定的联系。

This paper investigates and measures the extend of the local protectionism at present in China based on the different perk prices in various provinces. The result from some model analysis indicates that there is little relationship between the price disparity and the geological distance and different income levels between the provinces. This in turn suggests that the price difference is more due to manipulation than the market force： in other words, there is a considerable degree of local protectionism in our country. The cointegration of pork price＇ s time series in different provinces shows that 76.85% perk prices are without cointegration. However, the IMC（Index of Market Connection） calculation indicates some link between the central market （located in Liaoning Province） and markets in other provinces in the short run..