摘要
目的验证南水北调东线工程未来高水位运行对输水河道自然生长钉螺的影响。方法调查江都泵站应急抗旱调水期间消力池日平均水位,并以上年同期水位为对照;调查高水位运行前后消力池滩地自然生长钉螺动态;以应急抗旱调水水位为东线工程模拟运行水位,研究分析南水北调东线工程未来输水河道运行水位对钉螺生长的影响。结果江都泵站消力池滩地高程为6.4～7.2m。自2010-11-20-2011-07-31连续抽调江水255d,抽调水量62.35亿m3。调水期间江都泵站消力池日平均水位≥7.2m为216d,≥7.5m为161d,≥8.0m为38d;而上年同期分别为77、60d和16d。江都泵站消力池自然生长钉螺的3号滩地在高水位淹没前最高钉螺密度为0.856只/0.1m2,连续淹没后钉螺密度下降为0.0153只/0.1m2,且未发现子代钉螺。调查消力池其他滩地也未发现钉螺。结论南水北调东线工程未来运行水位可有效抑制输水河道内钉螺繁殖。
Objective To verify the impact of operation high water level on Oncomelania hupensis natural growth in the water diversion rivers of the east route of South-to-North Water Diversion Project. Methods The data of the daily mean water level were investigated in the stilling pool of Jiangdu Pumping Station during the water diversion under the emergency anti-drought, and the water level data of the previous year served as the control. The dynamic of natural growth of O. hupensis snails was observed before and after the high water level in the beach wetlands of the stilling pool of Jiangdu Pumping Station. The water level of emergency anti-drought was as simulation operation water level of the east route of South-to-North Water Diversion Project in the stilling pool, and then the effects of operation water level on O. hupensis natural growth in the water diversion rivers of the east route of South-to-North Water Diversion Project were studied. Results The altitude of the beach wetlands was 6.4 to 7.2 meters in the stilling pool of Jiangdu Pumping Station. The water diversion was 255 days continuously and the pumped water was 6.235 billion cubic meters in the Jiangdu Pumping Station from November 2010 to July 2011. There were 216, 136 days and 39 days when daily mean water level were more than or equal to 7.2, 7.6 and 8.0 meters during the water diversion, respectively. The snail densities were 0.856 snails/0.1m^2 and 0.0153 snails/0.1m^2, respectively, before and after the No.3 beach wetlands flooded in the stilling pool of Jiangdu Pumping Station. The densities of living snails decreased by 98.21%, and there was no any progeny of snail. The snails were not detected in other environment of the stilling pool. Conclusion The operation high water level can effectively restrain snail breeding in the water diversion rivers of the east route of South-to-North Water Diversion Project.
出处
《中国血吸虫病防治杂志》
CAS
CSCD
北大核心
2011年第6期664-667,共4页
Chinese Journal of Schistosomiasis Control
基金
江苏省科技支撑(社会发展)项目(BE2008632)
国务院南水北调办公室资助项目(20104)
关键词
南水北调东线工程
输水河道
血吸虫病
钉螺
水位
East route of South-to-North Water Diversion Project
Water diversion rivers
Schistosomiasis
Oncomelania snail
Water level
