气候因素对登革热媒介伊蚊密度影响的研究

Influence of climate factors on vector aedes density of dengue

目的 探索伊蚊种群动态变化与气候因素的关系 ,为登革热的防治和监测提供科学依据。方法 收集潮州市 1995～ 2 0 0 1年连续 7年的登革热发病资料、伊蚊媒介监测资料及同期的平均气温、最低气温、最高气温、日照时间、降雨量、相对湿度等气象资料 ,用相关分析和多元逐步回归分析的方法进行分析。结果 与媒介伊蚊密度有关的气候参数是 :降雨量、日照时间、降雨天数、平均气温、最低平均气温、相对湿度 ;经逐步回归分析得到回归方程 :^YBI=2 4 80 0 +0 82 6X1+0 0 2 0X2 - 0 418X3,其中X1代表最低平均气温 ,X2 代表降雨量 ,X3代表相对湿度。结论 气候因素对伊蚊媒介密度的影响是复杂的 ,但其主要影响因素是最低平均气温、降雨量、相对湿度。伊蚊密度的变化还与当地居民生活水平。

Objective To explore the relation between aedes density and climate factors,and to provide scientific method to prevent and supervise dengue fever.Methods To collect data of dengue fever case,aedes vector's supervision and climate(including average air temperautre,lowest air temperature,highest air temperaure,sunlight,rainfall and relative humidity).The data is analyzed by correlation analysis method and stepwise regression method.Results Meteorology parameter correlation with aedes density are rainfall,sunlight,average air temperature,lowest average air temperature and relative humidity,the regression equation is obtained by stepwise regression analysis,viz: BI =24 800+0 826X 1+0 020X 2-0 418X 3 X 1 represents lowest average air temperature,X 2 rainfall and X 3 relative humidity.Conclusion The influence of climate factor on vector aedes density is complicated,but its primary influence factors are lowest average air temperature,rainfall and relative humidity.Of course,change of aedes density is very correlative with standard of living and convention of living of local population.