Research on Level Relationships and Spatial Structure in Area of Western Liaoning
将辽西地区划分为21个中心地，用主成分分析和综合评分法将其分为4个等级，分析空间结构特征及影响因素，为优化资源配置和产业布局提供参考。
The western Liaoning,as the research object,is divided into 21 central places based on administrative units which above country level in this study.The research will use analysis methods including principal component analysis and comprehensive marking method to divide the study area into 4 grades and to analyze the spatial structure of the study area.The spatial structure of western Liaoning has characters as follow:(1) Grade one and grade four forms zonal distribution;(2) Grade two have a compact structure and locate by the coast and in the inland area;(3) Grade three link high-grade ones and bottom-grade ones as connections.The characters above are controlled by comprehensive factors of many aspects.Micro policies,cleavage action by the Bohai Sea,resource and economic connection with other regions,such as the Bohai Rim,are the most important function factors to form the spatial structure in western Liaoning.To construct the central places system as a more reasonable and more effective spatial structure,attention should be paid to coordinate the resource distribution and industrial layout to void unnecessary internal competition.Besides,the western Liaoning area would be better participate in regional cooperation more actively.Furthermore,to exert central places' merit will give a great help,such as to improve the central function of high-level central places and to stimulate contribution of bottom-level central places.