长江流域港口煤炭运输的空间演化及其影响因素

陈沛然,王成金

The spatial evolution and its influence factors of ports’ coal transportation in Yangtze River Basin

Peiran CHEN,Chengjin WANG

图6 长江流域港口煤炭下水区位商格局及演变

Fig. 6 Spatial pattern and evolution of the location quotient of coal unloading of ports in Yangtze River Basin