中国集中连片特困地区公路交通优势度及其对经济增长的影响
王武林, 杨文越, 曹小曙

Road transport superiority degree and impact on economic growth in the concentrated contiguous severe poverty areas in China
Wulin WANG, Wenyue YANG, Xiaoshu CAO
图4 2012年14个片区公路交通优势度
Fig.4 Road transport superiority degree of the 14 severe poverty areas in 2012