宁夏县域经济空间联系研究

On the spatial association of county economy in Ningxia

文中在借鉴相关学者提出的区域经济联系测度的一般路径的基础上,以宁夏18个县域单位为研究对象,通过节点分析法确定各县(市)的中心职能强度,利用断裂点模型来界定各县(市)的空间范围,运用线路分析法对各县(市)的可达性水平进行测度,采用改进的引力模型测算出各县(市)经济联系隶属度,进而确定出县(市)间经济联系方向。结果表明:宁夏各县(市)间经济联系强度地域分布呈显著差异,北部各县(市)的经济联系强度大于南部县(市)的经济联系强度,且交通可达性与经济联系强度具有显著的相关性;在北部地区形成以银川市为中心,向外辐射的"同心圆"式的经济联系密集区,南部形成以原州区为核心的"扇面"经济联系地域。

Based on the general measures on regional economic links,we selected the 18 counties of Ningxia as the research objects. Using the node analysis method to determine the various counties＇ center function intensity;breaking point model was used to define the scope of space in each county; circuit analysis method was used to measure various counties＇ accessibility level; with the improved gravity model the economic link membership degrees of various counties were detected,and the direction of the county＇s economic links was confirmed. Results show that the distribution of intensity of economic links between the areas was significantly different. The economic link intensity in northern counties was greater than south,and traffic accessibility had significant correlation to the intensity of economic links; in the northern region Yinchuan was formed as the center,and it formed ＂ concentric circles＂ pattern of economic link concentration areas; in southern region it formed economic contact region with Yuanzhouqu as the core of ＂ arc ＂. The economic link conformed to distance attenuation rule in Ningxia.