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通过对长江下游安徽段铜陵县胥坝铁锚洲滩钉螺分布及人畜上滩活动情况的调查,结合三峡建坝前后水位数据分解情况。表明三峡建坝后滩地洲尾浅滩钉螺分布将有所扩散,洲头高程较高地段钉螺分布将不受影响,人群上滩活动范围及上滩活动主要方式也将不会改变。但秋季滩地退水时间的提前,将使上滩捕鱼活动人群增多,从而使该类人群感染的危险性增加;同时耕牛上滩活动时间将提前半个月左右,增加了耕牛感染及污染滩地的机会。
Based on the investigation of the snail distribution and the activities of people and livestock on the beach of Anchor Island in Xuchangba, Tongling County, Anhui Province in the lower reaches of the Yangtze River, and the data of water level before and after the construction of Three Gorges Dam, Indicating that the distribution of snails in Tail Shallow Bank will be diffused after the construction of the Three Gorges Dam and that snail distribution will not be affected in the upper part of the headland. The range of activities on the upper beach and the main ways of activities on the upper beach will not change. However, the early retreat time of the beach will lead to an increase in the population of fishing activities in Shangtan, thus increasing the risk of such people becoming infected. At the same time, the time for cattle breeding in Shangbian will be about half an hour ahead of schedule, increasing cattle infection and Opportunity to contaminate the beach.