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由于各级政府实施地方保护主义,人为地限制产品和生产要素自由流通,加剧了我国产品的市场分割程度。因此,找出持续影响我国国内市场分割、阻碍生产要素流动的因素,将有效促进我国各区域间生产要素的合理流动和优化配置。笔者基于引力模型,运用省级面板数据,对我国省际贸易的产品市场分割、本地偏好程度以及分割原因进行估算和检验。结果显示,我国省际间的产品市场存在较为严重的分割现象。省际间的自然贸易壁垒和行政贸易壁垒加剧了我国省际间的产品市场分割。
As all levels of government implement local protectionism, artificially restrict the free circulation of products and factors of production, aggravating the degree of market segmentation in China’s products. Therefore, finding out the factors which will continue to affect the segmentation of China’s domestic market and hinder the flow of production factors will effectively promote the rational flow and optimization of the production factors in various regions of our country. Based on the gravity model and the provincial panel data, the author estimates and tests the segmentation of the product market, the degree of local preference and the reason of segmentation in the inter-provincial trade of our country. The results show that there is a serious segregation of the product market in China’s provinces. Inter-provincial natural trade barriers and administrative trade barriers have exacerbated the segmentation of product markets in China’s provinces.