Seasonal distribution of ground-active arthropod community in Reaumuria soongorica shrubbery land in Urat desert steppe

Using the red sand (Reaumuria soongorica) shrubland in the Urad desert steppe as the research sample plot, in the spring, summer and autumn of 2018, using the international trap trapping method, the seasonal dynamic distribution characteristics of the ground arthropod community and its relationship were investigated. The relationship between environmental factors. The results show that: (1) A total of 560 ground arthropods were captured in 3 seasons, belonging to 10 orders and 23 families. Among them, the dominant group in spring is Carabidae, and in summer, Carabidae and ant Families, autumn is the Pseudomidae family, the number of individuals respectively accounts for 51.54%, 59.11% and 64.88% of the total number of individuals; common groups have 8 types in spring and summer, and there are 10 types in autumn, and their individual numbers account for the total number of individuals. There are 43.08%, 37.33% and 32.68% of the rare group; there are 7 types in spring, 6 types in summer, and 3 types in autumn. The number of individuals accounted for 5.38%, 3.56% and 2.44% of the total number of individuals respectively. (2) 3 The ground arthropod group that accounts for more than 10% of the biomass in the season is only Carabidae, which accounts for 88.59%, 72.56% and 80.90% of the total biomass of the community in spring, summer and autumn respectively; 1%-10% of the ground The biomass of arthropod groups in spring, summer and autumn accounted for 9.76%, 25.51%, and 17.78% of the total biomass of the community respectively; less than 1% of the biomass of ground arthropod groups accounted for the total biomass of the community in spring, summer and autumn respectively 1.62%, 1.94% and 1.32% of the amount. (3) With seasonal changes, the density of ground arthropods, the number of groups, Shannon-Wiener index and Simpson index are all significantly different (P