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客货流地理是交通地理学研究的传统重要领域。本文利用位序—规模分布理论,对1980-2010年珠江三角洲客货运量等级规模结构分布特征及其变化进行研究。结果表明:客货运量规模的q值均大于1,符合位序—规模分布特征,但客运规模分布更显著。客运量q值先减小后增大,呈现出非均衡—相对均衡—非均衡演变特征;货运量q值逐渐降低,呈现出非均衡—相对均衡演变特征。在空间格局方面,客运空间格局呈现出由初期以广州为单中心向心型客运联系向穗莞深多中心客运联系转变;珠三角产业结构趋同性及以广州为中心的放射状交通网络结构,使得货运空间格局呈现出长期以广州为核心单核主导特征,主要表现为递接性联系特征。
Passenger and cargo flow geography is a traditional important area of traffic geography research. In this paper, the rank-size distribution theory is used to study the distribution characteristics and the changes of the scale structure of passenger and freight transport in the Pearl River Delta from 1980 to 2010. The results show that the q values of passenger and freight traffic volume are both greater than 1, which are in accordance with the order-size distribution characteristics, but the passenger distribution is more significant. The value of passenger traffic q decreases first and then increases, presenting a characteristic of non-equilibrium-relative equilibrium-non-equilibrium evolution; the q value of cargo traffic gradually decreases, presenting a characteristic of non-equilibrium-relative equilibrium evolution. In terms of spatial pattern, the spatial pattern of passenger transport has shown a shift from a single center-to-heart passenger transport system to a Guangzhou-Shenzhen multi-center passenger transport system in the initial stage. The convergence of industrial structure in the Pearl River Delta and the radial traffic network structure centered in Guangzhou have resulted in The freight space pattern shows the long-term dominant single nucleus in Guangzhou, which is mainly characterized by the sexual contact.