By analyzing the research results, it can be concluded that:
(1) The highest score was 420 and the lowest score was 112 out of 500, and the former was 3.75 times higher than the latter, indicating that this method can significantly distinguish the advantages and disadvantages of the parks;
(2) The average score of country parks was 285, which was medium to low. Among them, there were 10 parks with a score of less than 285, 3 parks with a score of 285–300, 12 parks with a score of 300–350, 4 parks with a score of 350–400 and 1 park with a score of more than 400, indicating that the method have obvious hierarchical differentiation;
(3) Among the top ranked parks, the park type, available construction area, spatial fragmentation degree and distance from waters have outstanding advantages. The top 5 country parks are mainly forest type, with high site integration, available construction area greater than 70hm2 and distance from waters greater than 1km. This result was highly consistent with the weight assignment of each impact factor;
(4) The advantages of wind direction and water-resisting property are not obvious, and their grade II both appeared in the top 5 country parks. The two factors are largely limited by established conditions and can be solved or alleviated by means of green belt and impervious layer.
In view of the characteristics of low and sudden public health emergencies, the disaster prevention function of the country park can be used to carry out the corresponding emergency plan planning through the method of combining disaster relief, so as to alleviate the difficulties of scientific site selection and timeliness of construction of emergency medical facilities. Through comparison, it is found that country parks are highly consistent with the demand for emergency medical facilities in terms of site selection, scale, environment, infrastructure, coverage, etc. The inclusion of country parks in the emergency plan for public health emergencies can greatly improve the speed of emergency medical facilities construction and reduce the harm of infectious diseases to the population and the environment to a certain extent by means of early rational location and layout, pre exploration and laying of pipe networks, strengthening sewage and garbage treatment systems, and rational planning of health functions.
The country park selected as the target of emergency medical facilities should be upgraded and transformed according to the construction standard of infectious disease emergency medical facilities: (1) A flat space of corresponding scale is reserved as the construction site of emergency medical facilities in the event of the COVID-19 outbreak. This space is preferred to sunny slopes, high terrain, low groundwater level, open and flat lawns or wasteland; (2) Carry out corresponding surveys on the selected sites to make the geological conditions clear, lay necessary infrastructure pipelines such as water, electricity, gas and communication in the reserved sites, improve the standards of sewage treatment system in the park, and add harmless waste treatment facilities to meet the requirements of the "Technical Specification for Centralized Disposal of Medical Wastes", so as to save construction time in case of the outbreak of COVID-19 epidemic; (3) Pay attention to the selection and configuration of healthy plants, create a microclimate on the site, and provide a good rehabilitation environment for patients; (4) The drawings of emergency medical facilities shall be prepared in advance to preset the construction process, and the relevant facilities and material supply departments shall be included in the plan.
This paper analyzes 8 influencing factors in determining the location of emergency medical facilities, lacking consideration of the construction cost of emergency medical facilities, the procurement cost of emergency resources and the transportation cost; In addition, this study screened the influencing factors according to the unique geographical environment, climate characteristics and construction status of Guangzhou, and set the weight according to the actual importance of each influencing factor. Due to the large difference of conditions in different regions, each factor has different degrees of influence on the site selection of emergency medical facilities. Therefore, the types of influence factors should be increased or decreased according to the local situation, and the weight should be adjusted according to the degree of influence, so as to give play to the favorable conditions of the target area and avoid the adverse factors.