应用地理信息系统研究甘肃省麻疹流行的空间分布规律

Study of the spatial distribution rule of measles prevalence in Gansu Province by geographic information system

目的对甘肃省麻疹流行的空间分布规律进行分析和研究。方法利用甘肃省2001—2004年的县级麻疹发病资料建立数据库,在Arc GIS 9．0软件的支持下,把甘肃省县级数字地图与建立的数据库关联并对统计资料进行四分位法和Moran's I空间自相关法分析,确定出高发病区域。结果甘肃省麻疹的空间分布呈现出显著的空间集聚现象,发病地区具有明显的空间自相关性,即病情分布的高密度区与高密度区邻接,低密度区与低密度区邻接;确定出庆阳和兰州为两个高发病区域;建立了甘肃省麻疹病情空间关联分布专题地图。结论得出了甘肃省麻疹发病的高发地区,提出了预测和控制麻疹传播和流行的措施。

Objective To analyze and study the spatial distribution rule of measles prevalence in Gansu Province. Methods A set of database was set up using the information of the data of measles in Gansu Province from 2001 to 2004 and linked to electronic maps of Gansu Province by the support of software Arc GIS 9.0. The statistic information was developed by quartile and Moran＇s I spatial autocorrelation to find the high attack areas. Results The results indicated that the spatial distribution of measles prevalence in Gansu Province had marked spatial cluster, and the measles areas had obvious spatial autocorrelation, i.e. high-attack area adjacent to highattack area and low-attack area adjacent to low-attack area. It is confirmed that Qingyang and Lanzhou are two high-attack areas. The map of the distribution of spatial autocorrelation in Gansu Province was founded. Conclusion The high-attack areas in Gansu Province were found, and measures for the surveillance and control of measles were suggested.