湖沼地区钉螺密度与环境关系的广义相加模型研究

发布时间：2018-05-29 20:28

  本文选题：钉螺 + 环境因子　； 参考：《现代预防医学》2014年18期

【摘要】：目的探讨湖沼地区钉螺密度与环境因素间的复杂非线性关系。方法 2012年3-5月,通过现场调查的方法收集湖北省嘉鱼县等5个县市的钉螺资料。利用3S技术和现场调查获取螺点的环境因子。应用广义相加模型分析钉螺密度与环境因子的复杂非线性关系。结果坡度对钉螺密度有负相影响(P=0.0328),螺点的上一年上水天数、高程、地表温度与钉螺密度间存在复杂的非线性关系(分别为P0.0001,P=0.0418,P=0.0022)。上年上水天数为90d,高程为29 m,地表温度为26℃的螺点钉螺密度最高。结论湖沼型地区钉螺密度与环境因素间有复杂的非线性关系,应用广义相加模型能够比较方便地分析它们之间的复杂非线性关系。
[Abstract]:Objective to study the complex nonlinear relationship between snail density and environmental factors in lake-marsh area. Methods data of Oncomelania hupensis were collected from 5 counties in Jiayu County, Hubei Province. The environmental factors of snail point were obtained by 3s technique and field investigation. The complex nonlinear relationship between snail density and environmental factors was analyzed by generalized additive model. Results the slope had a negative effect on the density of snails. There were complex nonlinear relationships between the days of water supply, elevation, land surface temperature and snail density in the last year (P 0.0001, P 0.0418, P 0. 041, P 0. 048, P 0. 0022, respectively). The snail density of the snails with surface temperature of 26 鈩，

本文编号：1952282