Abstract:

Objective To master the breeding and distribution of Oncomelania snails in hilly regions of Jurong City so as to
provide the evidence for establishing the program of snail elimination. Methods The historical snail habitat environments and ex?
isting snail habitat environments in hilly areas of Jurong City were investigated according to the river systems. The geographic coor?
dinate data of the acquisition historical and existing snail habitat environments were collected by GPS tools in the field，and the
characteristics and distribution of snail habitats were analyzed by Google Earth position technology. Results A total of 399 histori?
cal snail habitat environments were investigated，and the total area was 2904.39 hm2，including 33 Class Ⅰ environments with the
area of 415.04 hm2，33 Class Ⅱ environments with the area of 323.19 hm2，11 Class Ⅲ environments with the area of 96.40 hm2，
and 318 Class Ⅳ environments with the area of 1989.46 hm2. The environmental reformation rate was 14.29%. The Google Earth
marked maps showed the aggregation relation between the distribution of existing and historical snail habitats and the water sys?
tems. Conclusion The investigation has established the data?base of historical snail habitat environments and the space is
marked on the Google Earth map，which could help the snail monitoring and to establish the program of snail elimination better.

Key words: Oncomelania hupensis；Hilly area；Environment reformation；Google Earth；Jurong City

摘要：

目的 掌握句容市丘陵山区钉螺孳生和分布规律，为制定灭螺规划提供科学依据。方法 按水系调查丘陵山区
历史有螺环境和现有螺环境，并应用GPS现场采集历史有螺环境和现有螺环境的地理坐标数据，采用Google Earth技术定位分析钉螺孳生环境特点及分规律。结果 共调查历史有螺环境399个，历史有螺面积2 904.39 hm2。其中Ⅰ类环境33个，面积415.04 hm2；Ⅱ类环境33个，面积323.19 hm2；Ⅲ类环境11个，面积96.40 hm2；Ⅳ类环境318个，面积1 989.46 hm2。环境改造率达14.29%。Google Earth地图标注显示现有螺环境和历史有螺环境均沿水系聚集性分布。结论 调查建立了句容市历史有螺环境数据库，并以Google Earth地图进行空间标注，有助于山丘地区钉螺监测和更好地制定灭螺规划。

关键词: 钉螺；丘陵山区；环境改造；Google Earth；句容市