本文選題：釘螺 + 環(huán)境因子��； 參考：《現(xiàn)代預(yù)防醫(yī)學(xué)》2014年18期

【摘要】：目的探討湖沼地區(qū)釘螺密度與環(huán)境因素間的復(fù)雜非線性關(guān)系。方法 2012年3-5月,通過現(xiàn)場(chǎng)調(diào)查的方法收集湖北省嘉魚縣等5個(gè)縣市的釘螺資料。利用3S技術(shù)和現(xiàn)場(chǎng)調(diào)查獲取螺點(diǎn)的環(huán)境因子。應(yīng)用廣義相加模型分析釘螺密度與環(huán)境因子的復(fù)雜非線性關(guān)系。結(jié)果坡度對(duì)釘螺密度有負(fù)相影響(P=0.0328),螺點(diǎn)的上一年上水天數(shù)、高程、地表溫度與釘螺密度間存在復(fù)雜的非線性關(guān)系(分別為P0.0001,P=0.0418,P=0.0022)。上年上水天數(shù)為90d,高程為29 m,地表溫度為26℃的螺點(diǎn)釘螺密度最高。結(jié)論湖沼型地區(qū)釘螺密度與環(huán)境因素間有復(fù)雜的非線性關(guān)系,應(yīng)用廣義相加模型能夠比較方便地分析它們之間的復(fù)雜非線性關(guān)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，

本文編號(hào)：1952282