摘要
目的观察长江中游湖南君山段江滩钉螺分布的变化，分析三峡工程运行后钉螺分布的影响因素。方法选择具有代表性的4块江滩作为监测点，开展钉螺纵向监测，并收集三峡工程运行前后的水情、泥沙等资料信息。结果2003~2015年，江滩钉螺分布范围缩小了74.77%，面积减少了72.56%，活螺平均密度下降了97.20%，感染螺平均密度下降至0。结论三峡工程运行后长江中游湖南君山段江滩钉螺分布范围、分布区域面积、活螺平均密度和感染螺平均密度均呈整体下降趋势。
Objective To investigate the changes of Oncomelania hupensis snails in the marshlands at the middle reaches of Yangtze River along Junshan area, Hunan Province, after the Three Gorges Project being completed and fully functional. Methods Longitudinal monitoring on the snail prevalence was performed in the four distinctive marshlands, and corresponding data were collected on the changes of water levels and silt contents at the middle and lower reaches of Yangtze River before and fully functional Three Gorges Project.Results The marshlands with snail distribution and areas of marshlands were reduced by 74.77% and 72.56%,respectively, from 2003 to 2015. The density of live snails was decreased by 97.20% and infected snails were not found in 2015. Conclusion The areas with snail prevalence and snail distribution as well as average density of living snails and infected snails tend to decline in general at the middle reaches along Junshan area of Hunan Province after the Three Gorges project becoming fully functional.
作者
徐润尧
曹剑
胡本骄
李以义
任光辉
Xu Runyao;Cao Jian;Hu Benjiao;Li Yiyi;Ren Guanghui(Guangxinzhou Station of Schistosomiasis Control, Yueyang 414016,China;Hunan Institute of Parasitic Diseases, WHO Collaborating Centre for Research and Control on Schistosomiasis in Lake Region,Yueyang 414000,China)
出处
《热带病与寄生虫学》
2016年第3期133-136,共4页
Journal of Tropical Diseases and Parasitology
基金
水利部公益性行业专项(1261120265002)
关键词
三峡工程
江滩
钉螺
血吸虫病
Three Gorges Project
Marshlands
Oncomelania hupensis
Schitosomiasis
