温州市新型冠状病毒肺炎时空分布格局演化分析

本文首先结合社交媒体信息和温州市新型冠状病毒肺炎（COVID-19）发展态势，获取疫情传播先验知识，进一步采用DBSCAN自适应聚类算法，分析温州市COVID-19时空分布格局与演化规律。结果表明：①温州市COVID-19易在20~59岁的青壮年人群，以及商业服务人员、农民和工人人群间传播；②我国针对人口流动采取的系列措施能够有效遏制疫情进一步蔓延，使得温州市聚类空间簇数量在时间上呈现先增加后减小的趋势；③温州市鹿城区银泰商贸附近、乐清市南部和瑞安市西部具有疫情扩散高风险，后期需增强防控力度。本文细粒度地分析了温州市疫情时空演化过程，能够更好地辅助温州市政府部门更精细地部署疫情防控措施。

The spatio-temporal distribution and evolution analysis of COVID-19 in Wenzhou city

First combining with social media information and the situation of COVID-19 in Wenzhou city, the paper obtain prior knowledge of propagation regularities of epidemic. Based on this, we use DBSCAN adaptive clustering algorithm to analyze the spatio-temporal distribution patterns and evolution regulation of COVID-19 in Wenzhou city. The results show that:①The COVID-19 in Wenzhou city is easy to spread among young and middle-aged people aged 20 to 59, as well as between commercial service personnel, farmers and workers; ②A series of measures against human mobility can effectively prevent the COVID-19 spreading further, so that the number of spatial clusters of COVID-19 in Wenzhou city increase first and then decrease; ③We find that there is a high risk of COVID-19 spread near the Yintai business district which is in Lucheng District, southern of Yueqing city and western of Ruian city. Therefore, we suggest to strengthen the prevention and control of these areas in the later period. This paper analyzes spatio-temporal distribution patterns and evolution regulation of COVID-19 in Wenzhou city in a fine-grained manner, which can better assist Wenzhou government departments to make prevention and control measures for COVID-19.