Interactive Effect and Spatial Characteristics of Agricultural Development Level and Transport Superiority Degree in Main Grain-producing Areas of the Central Jilin Province, China

To investigate the spatial synergy between agricultural development level and transport superiority degree in grain-producing areas of the central Jilin Province and the driving mechanism between them, 22 counties in the central Jilin Province were used as the research units to calculate agricultural development level and transport superiority degree using the entropy weighting method, weighted travel time and raster cost distance. The spatial econometric model was used to analyze the mechanism of the mutual influence between the two. The main conclusions are as follows. 1) Agricultural development level around Changchun, the provincial capital city, and in the areas of Changchun-Jilin and Changchun-Gongzhuling is high, whereas the development level of the counties in the southwest is low. 2) Transport superiority degree of each county has improved, the overall connectivity of the road networks has been optimized, and the level of transportation accessibility has shown the development trend of 'centralization', exhibiting the characteristics of proximity diffusion. 3) Locally, there is spatial heterogeneity in the mutual driving effects of the two, with six main patterns. 4) The theoretical conditions of von Thunen's agricultural location have changed under the conditions of market economy due to the improvement of the transport networks, the new model of agricultural development, and the changes of the market system.