以陕、鄂、川、甘省际边缘区为代表的一些省际边缘区相对于其他地区经济发展缓慢,长期不能脱困,陷入“贫困陷阱”。其形成机理,一是省际边缘区普遍存在区域经济密度小、与中心城市交通距离远、区域经济分割严重的地理特征,受空间结构制约,发展先天不足。二是由于循环累积因果机制的存在,省际边缘区与中心城市形成核心—边缘结构,被彻底边缘化,发展条件进一步自然恶化。三是中央政府转移支付的负面效应使省际边缘区陷入不发展的困境,贫困陷阱被锁定。因此,建议实施特殊政策干预,打破恶性循环;培育自我发展能力,注重授人以渔;加强交通设施建设,改善空间结构;引导人口、产业集聚,重塑经济景观。 Some inter-provincial fringe areas, represented by the marginal areas of Shaanxi, Hubei, Sichuan and Gansu provinces, are slow in economic development relative to other areas and can not be detached for long periods of time and fall into the trap of poverty. The formation mechanism is that the marginal areas of the province are generally characterized by the low regional economic density, the long distance with the central city and the serious regional division of the economy. Due to the restriction of the space structure, the development is inherently inadequate. Second, as a result of the cumulative causal mechanism of the cycle, the marginal zone between the provincial and central cities formed a core-periphery structure and was completely marginalized, further aggravating the development conditions. Third, the negative effects of transfer payments by the central government have left the marginal area of ​​the province in an undeveloped predicament, and the poverty trap is locked in. Therefore, it is suggested that special policy intervention should be implemented to break the vicious circle; to foster self-development capabilities and emphatically delegate effort to fisheries; to enhance the construction of transport facilities and improve the spatial structure; and to guide population and industrial agglomeration and reshape the economic landscape.