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目的 探索登革热流行和媒介伊蚊种群的空间分布特征。方法(1)搜集广东省潮州市的登革热发病资料及同期的媒介种群监测资料;(2)制作潮州市的1:5万的数字化地图,包括了边界、居民点、道路交通、海拔高度、水系等要素;(3)现场测定各监测点中心位置的经纬度;(4)在ArcGIS 8.5专用软件上进行空间分析。结果 潮州市的伊蚊分布具有空间聚集性,伊蚊密度与水系的距离有关,且与水系距离越近,伊蚊密度越高。空间分布图显示,潮州市每年的伊蚊疫情虽有变化,但基本上保持高、中、低三类分布区域,且分布图的评价效果良好。结论 地理信息系统用于登革热媒介监测分析是可行的,并具有常规研究方法不可替代的作用。
Objective To explore the spatial distribution of dengue fever and vector Aedes mosquitoes population. Methods (1) To collect the incidence of dengue fever in Chaozhou City of Guangdong Province and the media monitoring data of the same period; (2) To make a 1: 50000 digital map of Chaozhou City, including boundaries, settlements, road traffic, altitude, (3) measuring the latitude and longitude of the center of each monitoring spot in the field; (4) performing spatial analysis on ArcGIS 8.5 special software. Results The distribution of Aedes mosquitoes in Chaozhou was spatial agglomeration. The density of Aedes mosquitoes was related to the distance of water system, and the closer the distance to water system, the higher the Aedes aegypti density. Spatial distribution maps showed that although the annual epidemic situation of Aedes mosquitoes changed in Chaozhou City, the distribution areas of high, medium and low were basically maintained, and the evaluation results of the distribution maps were good. Conclusion It is feasible to use geographic information system in monitoring and analysis of Dengue media and has the irreplaceable role of routine research methods.