Based on the "shortest path matrix", with the indexes "weighted mean travel costs" and "economic potential", the author studied the optimization of highway network in Hunan province and the evolution of spatial pattern from 1984 to 2004.With the economic accessibility and the index of "economic potential" it is possible to analyze the spatial pattern effectively through the changes of transportation network; it is beneficial to organize the urban and regional spatial structure, which will support the region's exploitation and the transportation's organization.The study result is that from 1984 to 2004, the accessibility of the highway network in Hunan province was a "core to edge" spatial configuration.The accessibilities isolines have been relaxed. The "CHANG-ZHU-TAN" region is a stronger core and the Yueyang county, Huaihua and Jishou are weak in the spatial configuration. From 1984 to 2004, the disparity of the absolute accessibility was reduced, and that of the relative accessibility became increasingly. The changes of economic potential reducing followed the transportation lines, and took as a "hand-shape". According to the "weighted mean travel costs" and "economic potential", the author divided the Hunan province into four categories of counties: the best development region, the better development region, the popularly development region and the worse development region. The accessibility shows the spatial configuration with a "point-axis" sign in 2004, which is contrary to the "lower-level and out-of-order" in 1984. In the future, the government should develop the "CHANG-ZHU-TAN" region and "one point and one line" regions, which will promote the fast Hunan provincic economic level greatly and form the economic channels in the eastern part of Hunan province. At the same time, the government should make great efforts to improve the accessibility in the western part of Hunan province, narrow the big gap of the economic development level in the province, thus being beneficial to the optimization of the spatial pattern in a "balanced and ordered" state.
ZHANG Bing, JIN Feng-jun, YU Liang
. Research on the optimization of highway network in Hunan Province and the evolution of spatial pattern in recent 20 years[J]. GEOGRAPHICAL RESEARCH, 2007
, 26(4)
: 712
-722
.
DOI: 10.11821/yj2007040008
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