陕西化龙山国家级自然保护区鳞翅目昆虫多样性与垂直分布研究

对2017-2019年化龙山国家级自然保护区的鳞翅目昆虫资源进行了详细调查，并分析不同海拔对鳞翅目昆虫物种丰富度的影响。结果表明，化龙山有鳞翅目昆虫35科232属341种，其中尺蛾科、夜蛾科和蛱蝶科种类最为丰富。此外，鳞翅目昆虫在化龙山的物种丰富度随海拔变化呈现“驼峰型”模式，即在中海拔（1 500 m）的物种数量、标本数量、辛普森指数（D）以及香农-维纳指数（H′）都达为最大值，分别为189、2114、0.875和2.175，而在低海拔（1 000 m）和高海拔（2 000 m和2 500 m）区域的物种丰富度则较低，分析认为这可能是植被分布、温度条件以及人为活动等因素造成。

Diversity and Vertical Distribution of Lepidoptera Insect Communities in the Hualong Mountain National Nature Reserve,Shaanxi

From 2017 to 2019,a detailed survey on Lepidoptera insect resources occurring in Hualong Mountain National Nature Reserve was carried out,and the influence of altitude on the richness of Lepidoptera insect species was analyzed.A total of 341 species were recorded,belonging to 35 families and 232 genera,among which Geometridae,Noctuidae and Nymphalidae were the most abundant.In addition,the species richness of Lepidoptera insects in Hualong Mountain showed a hump-shaped relationship with altitude.That is,the amount of species,amount of specimens,Simpson index(D)and Shannon-Wiener index(H′)at mid-elevation(1500 m)all reached their maximum values,which were 189,2114,0.875,and 2.175,respectively.The species abundance in low altitude(1000 m)and high altitude(2000 and 2500 m)areas was lower.Analysis suggested that this might be caused by factors such as vegetation distribution,temperature conditions,and human activities.