snail distribution density 钉螺分布密度
Conclusions The snail distribution was not the unique negative binomial distribution,but maybe dynamic distribution related with snail density. A new generalized distribution model was needed to reflect the dynamics of the distribution.
结论钉螺分布不是单一的负二项分布,可能存在着与密度有关的一种动态变化,有待于提出新的、更广义的分布模型来更好地反映这种动态变化。
参考来源 - 日本血吸虫中间宿主·2,447,543篇论文数据，部分数据来源于NoteExpress
Objective To understand the impact of the flood in 1998 on the snail distribution in the marshland around the Poyang Lake.
目的了解1998年洪水后对鄱阳湖区洲滩钉螺分布的影响及其现状。
Objective To understand the imp act of the flood in 1998 on the snail distribution in the marshland along the Ya ngtze River in Nanjing region.
目的了解1998年洪水后对南京市江滩和通江河道钉螺分布的影响及其现状。
RESULTS The detectable rate of Schistosomiasis in Jiangning County from 1991 to1999 showed an obvious downtrend, but the area of snail distribution lingered on at the same time.
结果江宁县1991/ 1999血吸虫患者群检出率呈明显下降趋势，然而同期钉螺面积变化呈徘徊态势。
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