A Study On The Species Diversity Of True Bugs Community In Saihanwula Nature Reserve

To understand the characters of true bugs community diversity of Saihanwula Nature Reserve,we surveyed The community composition of true bugs from 2017 to 2018 in 9 kinds of habitat types in Saihanwu National Nature Reserve.The research results are as follows:1.A total of 4616 true bugs specimens were collected,of which 110 species belonging to 21 families 76 genera were identified.One subfamily,Prostemminae and Five species,Prostemma kiborti,Megalonotus antennatus,Aradus hieroglyphicus,Odontoscelis fuliginosa,Sternodontus obtusus are recorded from Inner Mongolia for the first time.Miridae with the most number of individuals and species.Rhyparochromidae with the most number of genera.2.There was a significant difference with the diversity index of true bugs in difference habitat.The Shannon diversity index and the Margalef richness index were the highest in Betula platyphylla forest.The Quercus mongolica forest with the highest Pielou evenness index.The Ostryopsis davidiana bush with the highest Berger-Parker dominance index.The diversity index of the true bugs community had obvious timing characteristics.The diversity index and the specific richness of true bugs were the highest in July and the lowest in September in reserve.The Jaccard community similarity was the highest between the Upland steppe and Ostryopsis davidiana bush.And in the different months,the similarity index was the highest between the August and September.3.There was a significant difference with the breadth of niche of true bugs in Saihanwula Nature Reserve.Rhopalidae with the highest breadth of spatial niche.Rhyparochromidae with the highest breadth of temporal niche.The coefficients of niche similarity and the spatial niche overlap value among main groups of true bugs were relatively high.4.Climate and environmental factors have a significant impact on the characteristics of true bugs community.There is the strongest correlation between humidity and the proportion of herbs among environmental factors.The height and proportion of herbs have a greater impact on the distribution of true bugs.5.The result of faunal composition analysis showed that the Palaearctic species were absolutely dominant in Saihanwula Nature Reserve.Mongo-Xinjiang region,Northeast region and North China with a tendency to penetrate each other.Fauna composition was complex in Saihanwula Nature Reserve.