摘要目的：建立和初步应用地方性砷中毒地理信息系统(GIS）,了解青海省水砷空间分布。方法根据≤中国地方性砷中毒分布调查实施方案》及≤中央补助地方公共卫生专项资金地方病防治项目技术方案》,收集青海省2000-2009年水砷调查资料,利用地理信息技术软件,建立青海省地方性砷中毒GIS库,应用该GIS库分析调查地区水砷分布和高砷水源分布情况,并绘制调查地区水砷分布和高砷水源空间分布图。结果利用GIS绘制了调查地区水砷含量分布图和超标地区高砷水源分布图,在调查的35个县(市）中,水砷<0.01 mg/L的有11个县,水砷在0.01~0.05 mg/L的有19个县,水砷>0.05 mg/L的有5个县。结论成功建立了青海省地方性砷中毒的GIS,并进行了初步应用。通过该系统绘制空间分布图层集可直观地了解青海省饮用水砷的空间分布。

abstractsObjective To establish and apply the geographic information systems ( GIS ) in endemic arsenism affected areas, and to understand the spatial distribution of arsenic in drinking water of endemic arsenic poisoning areas in Qinghai Province. Methods According to "The Investigation of Endemic Arsenic Poisoning Programme in China" and the "Central Subsidy to Local Public Health Funding Programme for Endemic Disease Control", we collected data from investigations on drinking water type arsenic poisoning in Qinghai Province from 2000 to 2009, using the geographic information technology software, to establish GIS database of endemic arsenic poisoning in Qinghai Province, and to apply the GIS database, in drawing the distribution of water arsenic and space distribution of higher arsenic water sources in Qinghai Province. Results The distribution of water arsenic and space distribution of higher arsenic water sources in Qinghai Province was dawn using GIS. We investigated a total of 35 counties (cities), 11 counties water arsenic < 0.01 mg/L, 19 counties water arsenic in 0.01 - 0.05 mg/L, and 5 counties water arsenic > 0.05 mg/L. Conclusions We have successfully established a GIS of endemic arsenic poisoning and carried out a preliminary application. Therefore, the spatial distribution of drinking water arsenic could be intuitive understood through the spatial distribution map in Qinghai Province.