| YanMinghu National reserve Area is one of the largest important wetland reserve areas in China,and based on its importance,the insect diversity investigation was conducted out from June to September of 2007, hoping for providing a theoretical basis and based information for protecting the balance of ecological system and biodiversity.In this paper,it was studied for the composition of insect communities,the temporal dynamics of insect communities and the temporal dynamics of diversity from seven representatial habitats,diversity of insect community from seven habitats was analyzed,the comparability of plots was contrasted.The results were as follows:1.In the seven various habitats from reserve areas,5817 insect specimen belonging to 13orders,76 families,in 224 species were collected.Among them,the bigger communities were Lepidoptera and Coleoptera,the family number account for the proportion of super family and insect species of Hemiptera is ranked the third.These protected areas are fully embodied the characteristics of various habitats.In addition, according to the insects survey done for us,the first time,the insect directory from the YanMinghu National Reserve was summed up,and it total current 11,Families 102,513 species.2.The composition of insect communities and the number of insect species in different habitats are different,its richness of each plot shows:miscellaneous forest plot＞pure Quercus mongolica forest plot＞18 yr.Larix olgensis plot＞5 yr.Larix olgensis plot＞Selix type wetland plot＞9 yr.Larix olgensis plot＞Carex type wetland.Looking at the number of samples obtained:5 yr.Larix olgensis plot＞9 yr.Larix olgensis plot＞pure Quercus mongolica forest plot＞miscellaneous forest plot＞18 yr.Larix olgensis plot＞Selix type wetland plot＞Carex type wetland.3.Statistics analysis indicated that the trend of the changes with month in the diversity index(H') is coincident with that of evenness index(J) and richness index(S),and contrary to that of dominance index (D).4.From June to August between the bright lights at night to lure the investigation,the lights lured to the Sphingidae adults conducted by Statistics show that:a total of 425 samples 20 species collected.Which Smerithus planus alticola Clark,Smerithus caecus M(?)n(?)tri(?)s and Sphinx ligustri constricta Butler advantage for the local population.Analysis the diversity index of Sphingidae communities to see that the diversity index in June＞July＞August.5.In the investigation of the vegetation,a total of 3 phulas 37 orders 51 families and 206 species.Its performance of each meadow species richness shows:miscellaneous forest plot＞Carex type wetland＞pure Quercus mongolica forest plot＞18 yr.Larix olgensis plot＞9 yr.Larix olgensis plot＞5 yr.Larix olgensis plot =Selix type wetland plot. 6.Investigation soil animal in five habitats by hand sorting.Total obtained the number of 1596 large-scale soil animals,belonging to 42 families 19 orders 8 classes and 2 phylas.Among them the dominant groups are:Paratrechina,Formica and Tetramorium.There are 13 kinds of common groups and 19 kinds of rare groups.Community individual number on a time for dynamic analysis:1 st＞2nd＞3rd;According to an analysis of the vertical structure:the upper＞middle＞lower.Diversity index for different analysis concluded similar:pine diversity index than the broad-leaved forest.7.Based on the analysis of community similarity of each meadow show that the seven communities have low similarity.Among then,similarity coefficient between insect communities in miscellaneous forest meadow and insect communities in pure Quercus mongolia forest plot,and the similarity coefficient between Selix type wetland plot and Carex type wetland,and the similarity coefficient between 5 yr.and 9 yr.Larix olgensis plot.Followed by 0.4942,0.3465 and 0.3396.to show that the selection of sample plot have a certain reasonable,can represent the characteristics of different habitats.A certain distinction between the habitats, can show the distribution of insect in diffenent habitats.
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