云南高原山地林分郁闭度与钉螺密度关系的研究

Relationship of Stand Shade Density and Oncomelania hupensis Density in Fields of Plateau in Yunnan

在项目示范区开展了林分郁闭度、植被盖度与钉螺密度关系的研究,结果表明:随着林分郁闭度逐渐增大,有螺框数和钉螺密度呈下降趋势,当郁闭度达到0.8以上时,活螺密度为0;植被丰富、覆盖度高有利于钉螺的滋生,表明钉螺适宜于滋生在杂草丛生、植物数量多的环境。

The relationship among stand shade density,vegetation coverage and Oncomelania hupensis density in Yunnan Plateau fields was studied.The results show that the number of frames with Oncomelania hupensis and Oncomelania hupensis density decreased gradually as the stand shade density increases.The living Oncomelania hupensis density is 0 when the stand shade density is above 0.8.Abundant vegetation and high coverage is favorable to Oncomelania hupensis breeding,which indicated more Oncomelania hupensis inhabited in the area with overgrown weeds and luxuriant plants.