The Category And Diversity Of Flower-visiting Insects In Mao'ershan Region

In this paper,by systematic and random sampling method,the author investigated the flower-visiting insects in three different communities(Mao'ershan.Laoshan Region,Lao Yeling Region) from 2005～2007,sampled the amounts of flower-visiting insects in different plots and months,and then listed these species.The author analyzed the diversity of flower-visiting insects community with the methods of Shannon-Wiener diversity index,Pielou uniformity index,Simpson predominance centralization index and Margalef abundance index,the results are as follows.(1) In three communities,more than 3008 species of flower-visiting insect had been collected,which belong to 9 orders,60 families,191 genera and 276 species,found 1 specie firstly reported from China.Of the collected specimens,from the level of special to analyze, Lepidoptera is the most,Hemiptera is the fewest,other orders account for the small proportion.(2) Within the three indexs of flower-visiting insect community,H′is consistent with E and Ds along with time changes opposite toλapproximately.Along with season changes,the order of diversity index,uniformity index and abundance index of Mao'ershan Region from high to low is as follows,July,June,Augest,the beginning of Septembe;the order of predominance centralization index from high to low is as flower,the beginning of September, Augest,June,July.(3) In different vegetation types,the species composition and amounts of flower-visiting insects communities have some differences,the order of diversity index and predominance centralization index of Mao'ershan Region from high to low is as follows,Mao'ershan, Laoshan,Lao Yeling;the order of uniformity index and abundance index from high to low is as follows,Mao'ershan,Lao Yeling,Laoshan.(4) The results of similarity and clustering analysis demonstrate that the difference of similarity coefficients among flower-visiting insect communities in three communities is small. Laoshan-Lao Yeling is the lowest.Similarity of Mao'ershan,Laoshan and Lao Yeling is moderate discomparability.Similarity coefficient of June-July and July-Augest belong to moderate discomparability,others belong to dissimilar.(5) The species composition of flower-visiting insects community of Mao'ershan Region, visiting flowers have 29 families,thereinto varieties of Rosaceae is the most,varieties of Ranunculaceae and Compositae are the more.Flower-visiting insects mostly visit white,pink and so on.Purple flowers have small proportion.Cyme,Raceme and Capitulum are the most. Corolla of radiate symmetry is the most,Corolla of funnelform is the lowest.(6) Visiting flower pedigree of flower-visiting insects communities,scope of visiting flowers pedigree in Coleoptera and Diptera are the widest,but Mantodea is the narrowest. Mecoptera and Mantodea had been visited only one visiting flower.(7) The author investigated the flower-visiting insects in three different communities, confirm preponderant flower-visiting insects,in this paper,describe 9 species insects behaviors of visiting flowers.