The Butterfly Species Diversity And Community Dynamics In Yushu,Qinghai Province

In 2016 and 2017,we selected five habitats(forest,shrub,alpine shrub,alpine meadow,and bare rock)to investigate butterfly species and community diversity in Yushu.A total of 1580 individuals were recorded,belonging to 62 species of 7 families and 40 genera.The Lycaenidae(14 genera 16 species),Nymphalidae(8 genera 12 species)and Pieridae(5genera 12species)species was the dominant group.In the study area,Issoria Eugenia(13.4%),Albulina gaborronkayi(11.7%),and Pieris davidis(6.4%)were the dominant species.There were 27 species of Palaearctic realm,3 of Oriental realm,and 32 widespread species;these accounted for 43.5%,5%,and 51.5% of the total.From the perspective of Chinese Geographical Division,there are a large number of common species,and there are only a few species in the single area,and 12 kinds of special ingredients in the qinghai-tibet region,accounting for 19% of the total.Analyzed the Yushu city butterfly community structure in 2016-2017,a total of 1580 individuals were recorded,belonging to 62 species of 7 families and 40 genera.2016 records 5 families,29 genera and 49 kinds of butterflies,butterfly individual number 784,2017 record 56,40 genera and 5 families,butterfly butterfly individual number 796.The main distribution of this area is the Nymphalidae and the Lycaenidae.Analyzing the seasonal changes in the butterflies in the study area,Pieridae,Nymphalidae and Lycaenidae for each month are larger proportion.and the proportion of each month is small,which is the dominant population in the Yushu region.The Satyridae accounted for a small proportion in May,with a large proportion in the remaining three months.Hesperiidae butterflies are small proportion of each month,in August it did not record to the Section butterfly.The butterflies are the most in July,the least in May.The peak of individual number was in August;the diversity index,species richness index and evenness index of butterflies reached the highest in July.The dominance index gradually declined from May to July,and the lowest in July,and then gradually increased.The butterfly diversity index(H'),dominance index(D),species richness index(R),evenness index(J),and similarity index(I)were calculated and analyzed for the five habitats.The results showed that Nymphalidae has the largest number of individuals,and it has obvious advantages.The most common species is the Lycaenidae species and the smallest is the Papilionidae species.The number of individuals in the Nymphalidae is the largest,and the number of individuals in the Hesperiidae is the least;the highest diversity index is Lycaenidae,and the lowest is Papilionidae;the evenness index of Satyridae is the highest,and that of Papilionidae is the lowest;the dominance index of the Nymphalidae is the highest,the Papilionidae is the lowest;the species richness index of Lycaenidae is the highest,and the Papilionidae is the lowest.Shrub habitat had the highest diversity index,high evenness index,and high species richness index,but the dominance index was the lowest;the alpine meadow habitat had the lowest diversity index,specific richness index,and evenness index,but the highest dominance index.Through comparative analysis of these two years of survey data can be known.The dominant group of butterflies of the family Nymphalidae and Lycaenidae in Yushu City,the composition of the butterfly area was not much changed,which was dominated by wide cloth,followed by the ancient north.The species and diversity index of butterflies in Yushu City have gradually increased,indicating that the butterfly community in Yushu City is relatively stable.