【摘要】 目的探讨北京市肾综合征出血热(HFRS)宿主动物的感染情况与环境因素之间的关系。方法选择北京市9个区(县)作为研究试验区,设立14个调查点,对HFRS动物宿主感染情况进行调查,应用全球定位系统对调查点进行定位,在ArcGIS软件支持下,建立调查点矢量图层,并与北京市1∶100 000地形图、北京市Landsat-7 TM卫星遥感影像图及北京市高程图进行叠加,分别提取调查点周围2 km缓冲区内的平均海拔,校正植被指数及土地利用信息,导出后在SPSS 13.0中分析宿主感染情况与环境因素的联系。结果不同地区间HFRS动物宿主密度和带毒率的差异具有统计学意义;宿主带毒率和带毒指数与园地、水浇地面积成正相关关系;宿主带毒情况和校正植被指数之间无相关性;褐家鼠带毒率与海拔、水浇地面积之间呈正相关关系。结论北京地区肾综合征出血热动物感染情况与土地利用等地理环境因素有关,提示应根据不同地理环境特点采取有针对性的防控措施。更多还原

【Abstract】 Objective To explore the association between Hantavirus(HV) infection of animal hosts and environmental factors.Methods Investigations on infection of HV in rodent hosts were carried out at 14 sites of 9 representative areas of Beijing from 2002 to 2005.Global Position System was used to select the study sites.In ArcGIS software,sample sites point vector layer was built up,and than overlayed with the Beijing relief map,Beijing Landsat-7 TM imagery and the Beijing digital elevation map to extract the average elevation,the average normalized difference vegetation index(NDVI) and land use within a 2 km buffer of each study site.The correlation between HV infection of animal hosts and environmental factors were analyzed using SPSS 13.0.Results Both densities and HV infection rates of animal hosts were statistically different in various study sites.There were a positive correlation between HV infection rate of animal host,the HV infection index and the percentage of garden plot,the percentage of irrigable land.The HV infection rate of sewer rat and the elevation as well as percentage of irrigable land was positively correlated.No association was found between HV infection of animal hosts and NDVI.Conclusion The land-use pattern contributes to HV infection of rodents in Beijing.These findings have significant applications for prevention and control of the disease.更多还原