SPATIO-TEMPORAL EVOLUTION OF LAND TRANSPORTATION CONNECTION IN THE YANGTZE RIVER DELTA URBAN AGGLOMERATION UNDER THE BACKGROUND OF AREA EXPANSION
WU Wei1,2, TANG Zhao-pei3, LIANG Shuang-bo1,2, CAO You-hui1,2
1. Key Laboratory of Watershed Geographic Sciences, Chinese Academy of Sciences, Nanjing 210008, China;
2. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;
3. School of Urban and Regional Science, East China Normal University, Shanghai 200241, China
Abstract Convenient transportation is the base for urban agglomerations to expand area. Taking each county unit of the Yangtze River Delta Urban Agglomeration as the research object, and targeting at the prefecturelevel cities, 16 in 2005 and 26 in 2019, this study comprehensively contrasts and analyses how each object connects with central cities and prefecture-level cities by land transportation to explore how the land transportation connection evolves under the background of urban agglomeration expansion.Conclusionsare as follows: 1) Area expansion of the Yangtze River Delta Urban Agglomeration brings about longer average travel time by highway from research units to central cities and prefecture-level cities. 2) For the railway network of the Yangtze River Delta Urban Agglomeration, there is no tight correspondence between the unit connectivity and intensity. While urban units show higher intensity of connections and denser distribution than county ones, the connectivity of units in research region tends to be less obvious. 3) From the perspective of both highways and railways, in 2005, the average travel time by railway from each county to central cities or prefecture-level cities is in accordance with that by highway network. However, owing to the rapid expansion of high-speed railway network, the situation changes a lot in 2019 when the expansion decreases the average travel time of all the units and improves the balance in the research region.
WU Wei,TANG Zhao-pei,LIANG Shuang-bo等. SPATIO-TEMPORAL EVOLUTION OF LAND TRANSPORTATION CONNECTION IN THE YANGTZE RIVER DELTA URBAN AGGLOMERATION UNDER THE BACKGROUND OF AREA EXPANSION[J]. HUMAN GEOGRAPHY, 2022, 37(3): 163-171,182.
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2022, Vol. 37 
