辽宁省县域交通优势度评价研究

在辽宁省主体功能区的研究背景下,以辽宁省74个县级行政单位为研究对象,采用《省级主体功能区划分技术章程》关于交通优势度的计算流程和方法,以交通网络密度Di、交通干线影响度Ci和区位优势度Si为指标,通过ArcGIS和SPSS等软件分析,得到辽宁省交通优势度的空间分布特征和成因。结果表明:交通优势度两级分化严重,交通优势突出县域个数不足总数的20%,交通优势较好的县域总面积仅占全省的12%;交通优势度以沈阳、大连为中心,沿沈大交通轴线向两侧逐渐减低,并表现出一定的"亲海"模式,主要原因是国家干线交通规划和辽宁省空间经济格局的导向作用。在未来,将继续完善海陆空立体化交通网络,构建城际交通圈,打造城市组团。

A RESEARCH ON THE SUPERIORITY DEGREE OF TRANSPORTATION OF THE COUNTY-LEVEL ADMINISTRATIVE UNITS OF LIAONING PROVINCE

Under the researching background of the main functional reagion in Liaoning Province, taking 74 County-level administrative units in Liaoning Province as studying objects, according to the Caculating processes and assessment methods of transportation superiority degree in ＂The Technical Specification of Regional Division of Provincial Major Functional Zones＂, and using three indicators： traffic network density, traffic trunk influence value and location superiority degree, we finally get the features and causes of spatial pattern of transporta- tion superiority degree in Liaoning Province on the basis of GIS and SPSS technology. The results show that： transportation superiority degree appears a state of serious polarization, there are less than 20% counties which have outstanding transportation, and the total area of counties which have better transportation is only account for 12% to Liaoning Province; Taking Shenyang and Dalian as center cities, transportation superiority degree reduces gradually along the both sides of Shenyang--Dalian transport axis, moreover, it shows a ＂love for the sea＂ mode which is mainly guided by State Route Traffic Planning and spatial economic structure of Liaoning Province. In the future, there is a sustained demand to improve the three-dimensional transportation network, make efforts to build inter-city traffic circle and build the city tour.