关键词: 山地城市, 医疗设施, 可达性, 地图数据, 重庆市主城区, GIS, POI, 两步移动搜寻法

Abstract:

With the continuous development of China's social economy, residents' demand for medical services is increasing. It is of great significance to analyze and evaluate the service scope of urban medical facilities to solve the contradiction between medical supply and demand and improve the level of urban health. At present, the coverage assessment of medical facilities in China mostly ignores the traffic network and population distribution, resulting in many blind areas of urban medical services. The complex terrain environment of mountainous high-density city affects the travel ability and mode of residents, and increases the difficulty of medical facilities service coverage, so it is difficult to accurately evaluate it by traditional methods. Based on the analysis and comparison of the advantages and disadvantages of the existing medical accessibility research methods, taking the main urban area of Chongqing as the experimental area, this paper attempts to adopt the optimized 2SFCA, and according to the network map data and official statistical data, establishes the medical facility accessibility analysis model based on GIS platform, The coverage of medical facilities and medical accessibility of each street and town were scientifically evaluated from three levels of city, district, and community. The results show that the improved method can deal with massive medical data, accurately simulate the scope of medical services, and output the evaluation results of full level medical facility service coverage, which is more suitable for mountainous areas with complex transportation and multi-level medical facility service coverage evaluation. The comprehensive evaluation shows that the medical facilities in the main urban area of Chongqing have the problems of uneven spatial distribution of large general hospitals and incomplete internal coverage of primary medical facilities, and the streets and towns with better medical coverage only account for 33.1% of the total. Therefore, it is suggested that the high-quality large-scale medical resources gathered in the old urban areas should be shared with the new urban areas. At the same time, according to the geographical location and technical ability, medical districts with complete levels should be established to make up for the shortcomings of primary medical services in the old urban areas, to improve the allocation of medical facilities in the main urban areas of Chongqing.

Key words: mountainous city, medical facilities, accessibility, map data, main urban area of Chongqing, GIS, POI, 2SFCA