摘要
为了掌握青海省祁连县昆虫群落多样性及昆虫多样性变化情况,选取祁连县阿柔乡和央隆乡作为研究区,采用Z字形扫网法对昆虫的种类和数量进行调查,研究祁连县昆虫群落多样性特征.结果显示,此次调查共采集及鉴定昆虫标本11 622头,隶属于9目53科103属170种;优势类群为双翅目(Diptera)、鞘翅目(Coleoptera)、直翅目(Orthoptera)、膜翅目(Hymenoptera)和半翅目(Hemiptera);2021年所采集的昆虫标本中,双翅目的Shannon-Wiener多样性指数、Pielou均匀度指数和Margalef丰富度指数均最高,直翅目的Simpson优势度指数最高;2022年半翅目的Shannon-Wiener多样性指数、Pielou均匀度指数和Simpson优势度指数均最高,双翅目Margalef丰富度指数最高.通过两年对比可知,半翅目和双翅目各指数均处于稳定状态,直翅目各指数明显降低,总体来看2022年昆虫群落的多样性指数明显升高,群落结构趋于稳定.
Abstract
In order to understand the diversity and change of insect community in Qilian County,Qinghai Province,this study chose A Rou Township and Yanglong Township in Qilian County as the study area,and investigated the species and quantity of insect community in Qilian County by using Z-shaped sweeping net method.The results showed that a total of 11 622 insect specimens were collected and identified,belonging to 9 orders,53 families,103 genera and 170 species.The dominant groups were Diptera,Coleoptera,Orthoptera,Hymenoptera and Hemip-tera.Among the insect specimens collected in 2021,the Shannon-Wiener diversity index,Pielou evenness index and Margalef richness index of Diptera were the highest,and the Simpson dominance index of Orthoptera was the highest.In 2022,the Shannon-Wiener diversity index,Pielou evenness index and Simpson dominance index of He-miptera were the highest,and the Margalef richness index of Diptera was the highest.Through two-year compari-son,the indices of Hemiptera and Diptera were in a stable state,while the indices of Orthoptera were significantly reduced.On the whole,the diversity index of insect community increased significantly in 2022,and the community structure tended to be stable.
基金项目
国家科技基础资源调查专项(2019FY100400)
NETL
NSTL
万方数据