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综合应用地理信息系统和流行病学方法，实现从专题地图获取环境信息，用于血吸虫病的宏观研究。单因素分析表明钉螺的分布与降水量、日照时间、气温有关；多元分析显示了年均降水量为１５００～１６００ｍｍ或年日照时间在２０００～２１００ｈ的区域，有利于钉螺的生存；而年日照时间在１６００～１７００ｈ的区域，则不利于钉螺的生存。地理信息系统在空间显示和分析上的独特性，使其能够成为研究血吸虫病及其影响因素的直观、快捷的工具
Comprehensive application of geographic information systems and epidemiological methods to achieve from the thematic map access to environmental information for the macro study of schistosomiasis. Univariate analysis showed that the distribution of Oncomelania snails was related to precipitation, sunshine duration and air temperature. Multivariate analysis showed that the annual precipitation was 1500-1600 mm or annual sunshine duration was in the range of 2000-2100 h, which was in favor of snail survival. In 1600 ~ 1700h area, it is not conducive to the survival of snails. The uniqueness of geographic information systems in spatial display and analysis makes them an intuitive and fast tool for studying schistosomiasis and its influencing factors