RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2009, Vol. 18 >> Issue (3): 264-269.

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ON CORRELATION BETWEEN DIFFUSION OF (WTHX) ONCOMELANIA HUPENSIS (WTHZ)  GREDLER AND THE FLOW REGIME IN DONGTING LAKE

  

  1. 1.Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China； 2.Nanxian Office of Schistosomiasis Control, Nanxian 413200, China
  • Online:2009-03-20

Abstract:

Dongting Lake is an area with most wide distribution of WTBX Oncomelania hupensis WTBZ and most serious schistosomiasis epidemic region in China.In order to reveal the response of the diffusion of Oncomelania hupensis to the flow regime,this paper provides a set of flow condition parameters for correlating the diffusion and bred location of Oncomelania hupensis with the flood level.Among nine parameters of flow condition,mean water level in flood season is the most one correlated with the change of flow condition in a flood year.The paper quantitatively analyzes the relationship between Oncomelania hupensis's diffusion in Dongting Lake and the mean water level at Chenglingji Station during flood season.The result shows that there is a significant linear correlation between the areas of Oncomelania hupensis and mean water level in flood season in Dongting Lake.The research results are helpful for the forecast and prevention of schistosomiasis epidemic situation,and technically support the spot check and killing of Oncomelania hupensis.

Key words: Oncomelania hupensis, diffusion, water flow parameters, schistosomiasis, Dongting Lake

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