湖沼型血吸虫病流行区钉螺抽样方法的对比研究  

Comparison study on sampling methods of Oncomelania hupensis snail survey in marshland schistosomiasis epidemic areas in China

作　　者：赵安[1,2] 张文馨[1,2] 姚忠[3] 马玉宽[2] 柳庆 段后浪 商伊迪 

机构地区：[1]江西师范大学鄱阳湖湿地与流域研究教育部重点实验室,南昌330022 [2]江西师范大学地理与环境学院 [3]江西省科学院

出　　处：《中国血吸虫病防治杂志》2016年第5期507-512,共6页Chinese Journal of Schistosomiasis Control

基　　金：国家自然科学基金项目(81260449);江西省教育厅2012年度科技项目(CJJ12185);江西省青年科学基金项目(20132BAB214022)

摘　　要：目的优化、简化湖沼型血吸虫病流行区钉螺调查方法,提高钉螺调查精度、效率和经济性。方法基于鄱阳湖区域恒湖农场茶叶港草洲1块50 m×50 m试验样地,全覆盖查螺后再分别采用简单随机抽样、系统抽样与分层抽样等3种方法进行钉螺调查,计算最小需求样本量、抽样相对误差与抽样绝对误差。结果本研究中简单随机抽样、系统抽样与空间分层抽样等3种方法的最小需求样本量分别为300、300和225,抽样相对误差均小于15%,抽样绝对误差分别为0.221 7,0.302 4和0.047 8。结论用高程作为分层依据进行空间分层抽样是钉螺实际调查中节省成本、提高精度的有效途径。Objective To optimize and simplify the survey method of Oncomelania hupensis snail in marshland endemic region of schistosomiasis and increase the precision,efficiency and economy of the snail survey. Methods A quadrate experimental field was selected as the subject of 50 m×50 m size in Chayegang marshland near Henghu farm in the Poyang Lake region and a whole-covered method was adopted to survey the snails. The simple random sampling,systematic sampling and stratified random sampling methods were applied to calculate the minimum sample size,relative sampling error and absolute sampling error.Results The minimum sample sizes of the simple random sampling,systematic sampling and stratified random sampling methods were 300,300 and 225,respectively. The relative sampling errors of three methods were all less than 15%. The absolute sampling errors were 0.221 7,0.302 4 and 0.047 8,respectively. Conclusion The spatial stratified sampling with altitude as the stratum variable is an efficient approach of lower cost and higher precision for the snail survey.

关 键 词：钉螺 血吸虫病 湖沼型流行区 抽样方法 空间分层抽样 对比研究 

分 类 号：R383.24[医药卫生—医学寄生虫学]