Study On The Community Structure And Diversity Of Main Terrestrial Arthropod In Lianhua Lake Wetland Of Wenshang Country

The area of wetland in my country is vast.As a special artificial wetland,wetland parks are closely related to human production and life,playing an important role in improving the urban ecosystem.With the rapid development of wetland parks in recent years,many national,provincial and municipal wetland parks have emerged.Wetland parks have a large variety of arthropods,domestic and foreign experts have carried out a series of investigations on its biodiversity.Due to insufficient human understanding and habitat destruction,many arthropod species and numbers are decreasing.The Lianhua Lake Wetland Park in Wenshang County has a beautiful environment with numerous animals and plants.At present,there are few reports on the research of Lianhua Lake Wetland Park,especially lacking of investigation on arthropods.The species richness,evenness and dominance are ominous,and the biodiversity of arthropod is vague.Therefore,the research captures and collects arthropods by using methods such as sweeping nets,traps,and lamp traps to study the species diversity and community structure of main terrestrial arthropods,such as Insecta and Arachnida,in Lianhua Lake Wetland Park,in order to provide data reference for the protection and utilization of arthropod resources in Lianhua Lake wetland Park.1.A total of 7003 arthropods were collected and 6108 were identified,including 176 species,69 families,11 orders.Among them,there are 133 species of phytophagous pests in44 families of 6 orders,34 species of predatory and parasitic natural enemies in 20 families of8 orders,and 9 species of other arthropods in 6 families of 2 orders.And the survey were sorted out which based on the above arthropod species information.2.According to the investigation,the main terrestrial arthropod species in Lianhua Lake Wetland Park of Wenshang County include 3 families and 6 species of Odonata,33 species and 18 families of Hemiptera,26 species and 7 families of Coleoptera,71 species and 16 families of Lepidoptera,9 species and 5 families of Orthoptera,1 species and 1 family of Blattaria,2 species and 1 family of Mantidae,2 species and 1 family of Neuroptera,8 species and 5 families of Diptera,7 species and 4 families of Hymenoptera,11 species and 8families of Araneoptera.Among them,Hemiptera and Lepidoptera have more families.The three orders of Lepidoptera,Hemiptera and Coleoptera account for a larger proportion of the number of species.In terms of the number of individuals,the number of Hemiptera,Lepidoptera,and Diptera is more.3.By analyzing the relative abundance and dominance of arthropods,there are more species in the Lianhua Lake Wetland Park of Wenshang County,such as Corythucha ciliata,Aleyrodidae and Hyphantria cunea etc.The number of phytophagous pest groups is occupying the dominant position,predatory natural enemies are predominant in the natural enemy group,with fewer parasitic natural enemies,and the largest number of Formicidae among other arthropods.4.According to the analysis of arthropod community characteristics,it is found that the dominance,richness,diversity index and evenness index of arthropods are different in different months.The evenness was maintained between 0.68 and 0.80 in each month,and the diversity index was higher in September and October,the species richness was higher in July and September,the dominance was the largest in July and the smallest in September.