Diversity analysis of grasshoppers in the grasslands of Xinbaerhu Left Banner,Inner Mongolia
In order to clarify the distribution and occurrence of locusts and grasshoppers in the grass-lands of Xinbaerhu Left Banner in Hulunbuir City,four types of grasslands were selected,including meadow grassland,mountain grassland,lowland grassland,and typical grassland. The sweeping method was used to investigate the types and quantities of locusts in the grasslands,and the least significant dif-ference method was used to analyze their community diversity and differences. The results showed that a total of 5768 grasshoppers belonging to six families,20 genera,and 36 species of grassland locusts and grasshoppers were collected. Among them,Myrmeleotettix palpalis,Dasyhippus barbipes,and Bryodema luctuosum were classified as the dominant species in the grasslands of Xinbaerhu Left Ban-ner. Of the four grassland types,the typical grassland has the highest number locust species,with 27 spe-cies belonging to 17 genera in six families. The lowland grassland has the fewest locust species,with 18 species belonging to 13 genera in four families. The number of individuals,richness index,and diver-sity index of typical grassland locusts were significantly higher,compared to the other three types of grasslands,while its and the dominance index was significantly lower. The uniformity index of the four types of grasslands was not significantly different. The diversity of locust communities was greatest in mountainous grasslands and typical grasslands and lowest in lowlands and typical grasslands. During the first eclosion period,20 species emerged belonging to 15 genera in five families,while 24 species emerged in the second eclosion period,and 24 species emerged belonging to 18 genera in six families. In the third eclosion period,32 species emerged belonging to 20 genera in six families. The number of individual locusts was higher during the first and second emergence stages than the third. It is recom-mended that grasshopper control efforts be carried out during the first two stages before locust emer-gence.
万方数据
维普
