【摘要】 采用1993—2022年长江经济带11个省市的对外贸易和外商投资数据，从开放规模和开放强度两个维度构建综合开放指数、开展实证研究。结果发现：近30年来长江经济带对外开放水平快速提升，表现为“缓慢提升—快速提升—波动提升—加速提升”四个不同阶段，空间上呈现出下游与中上游地区的两极分化格局；同时，上中下游发展不平衡、区域合作机制不健全和区域开放平台及通道的支撑能力不强等是长江经济带对外开放的主要障碍因素。未来应以国内通道与国际大通道对接为核心，强化通道畅通和陆海联动；以内陆开放高地和边境口岸建设为重点，强化开放支撑，构建全方位、多层次的对外开放新格局。更多还原

【Abstract】 Using foreign trade and foreign investment data of 11 provinces in the Yangtze River Economic Belt from 1993 to 2022,the comprehensive opening up index was constructed based on two dimensions of opening scale and opening intensity to carry out empirical research. Research indicates:In the past 30 years,the level of opening up of the Yangtze River Economic Belt has increased rapidly, which can be divided into four different stages: slow-growth, rapid-growth, fluctuation-growth and accelerated-growth. There is a clear polarization between the lower reaches and the middle-upper reaches in spatial structure.Meanwhile,the unbalanced development of the upper,middle and lower reaches,the imperfect regional cooperation mechanism and the weak supporting capacity of regional opening platforms and international channels are the main obstacles to the opening up of the Yangtze River Economic Belt. In order to further expand the high-level opening up of the Yangtze Economic Belt,it should focus on connecting domestic and major international corridors under the direction of the overall spatial framework of the Belt and Road Initiative to strengthen the unobstructed and effective transportation and the linkage of land and sea. Besides,it also needs to accelerate the building of inland open highlands and border ports to strengthen support for opening up and build a new pattern of all-dimensional and multi-level opening-up.更多还原